ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • Nuclear reaction
  • Photosynthesis
  • Elsevier  (1,464)
  • American Association for the Advancement of Science (AAAS)  (141)
  • 1
    facet.materialart.
    Unknown
    [This Week in Science] Sometimes, red light means grow (2016)
    American Association for the Advancement of Science (AAAS)
    In: Science
    Details
    Publication Date: 2016-09-03
    Description: Author: Nicholas S. Wigginton
    Keywords: Photosynthesis
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Geosciences , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 2
    facet.materialart.
    Unknown
    Carbon in Amazon forests: unexpected seasonal fluxes and disturbance-induced losses (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2003-12-04
    Description: The net ecosystem exchange of carbon dioxide was measured by eddy covariance methods for 3 years in two old-growth forest sites near Santarem, Brazil. Carbon was lost in the wet season and gained in the dry season, which was opposite to the seasonal cycles of both tree growth and model predictions. The 3-year average carbon loss was 1.3 (confidence interval: 0.0 to 2.0) megagrams of carbon per hectare per year. Biometric observations confirmed the net loss but imply that it is a transient effect of recent disturbance superimposed on long-term balance. Given that episodic disturbances are characteristic of old-growth forests, it is likely that carbon sequestration is lower than has been inferred from recent eddy covariance studies at undisturbed sites.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Saleska, Scott R -- Miller, Scott D -- Matross, Daniel M -- Goulden, Michael L -- Wofsy, Steven C -- da Rocha, Humberto R -- de Camargo, Plinio B -- Crill, Patrick -- Daube, Bruce C -- de Freitas, Helber C -- Hutyra, Lucy -- Keller, Michael -- Kirchhoff, Volker -- Menton, Mary -- Munger, J William -- Pyle, Elizabeth Hammond -- Rice, Amy H -- Silva, Hudson -- New York, N.Y. -- Science. 2003 Nov 28;302(5650):1554-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Earth and Planetary Sciences, Harvard University, Cambridge, MA 02138, USA. saleska@fas.harvard.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/14645845" target="_blank"〉PubMed〈/a〉
    Keywords: Brazil ; Carbon/*analysis/metabolism ; Carbon Dioxide/*analysis/metabolism ; Confidence Intervals ; *Ecosystem ; Oxygen Consumption ; Photosynthesis ; Rain ; *Seasons ; *Trees/growth & development/metabolism ; Wood
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 3
    facet.materialart.
    Unknown
    Botany. State transitions--a question of balance (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2003-03-08
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Allen, John F -- New York, N.Y. -- Science. 2003 Mar 7;299(5612):1530-2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Plant Biochemistry, Center for Chemistry and Chemical Engineering, Box 124, Lund University, SE-221 00 Lund, Sweden. john.allen@plantbio.lu.se〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12624254" target="_blank"〉PubMed〈/a〉
    Keywords: Algal Proteins/chemistry/genetics/isolation & purification/metabolism ; Animals ; Binding Sites ; Chlamydomonas reinhardtii/*enzymology/genetics/metabolism ; Chlorophyll/metabolism ; Electron Transport ; Fluorescence ; Gene Library ; Light ; Light-Harvesting Protein Complexes ; Models, Biological ; Mutation ; Oxidation-Reduction ; Phosphorylation ; Photosynthesis ; Photosynthetic Reaction Center Complex Proteins/*metabolism ; Plastoquinone/metabolism ; Protein-Serine-Threonine Kinases/chemistry/genetics/*isolation & ; purification/*metabolism ; Signal Transduction ; Thylakoids/*enzymology ; Transcription, Genetic
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 4
    facet.materialart.
    Unknown
    Global carbon sinks and their variability inferred from atmospheric O2 and delta13C (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2000-03-31
    Description: Recent time-series measurements of atmospheric O2 show that the land biosphere and world oceans annually sequestered 1.4 +/- 0.8 and 2.0 +/- 0.6 gigatons of carbon, respectively, between mid-1991 and mid-1997. The rapid storage of carbon by the land biosphere from 1991 to 1997 contrasts with the 1980s, when the land biosphere was approximately neutral. Comparison with measurements of delta13CO2 implies an isotopic flux of 89 +/- 21 gigatons of carbon per mil per year, in agreement with model- and inventory-based estimates of this flux. Both the delta13C and the O2 data show significant interannual variability in carbon storage over the period of record. The general agreement of the independent estimates from O2 and delta13C is a robust signal of variable carbon uptake by both the land biosphere and the oceans.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Battle, M -- Bender, M L -- Tans, P P -- White, J W -- Ellis, J T -- Conway, T -- Francey, R J -- New York, N.Y. -- Science. 2000 Mar 31;287(5462):2467-70.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Geoscience, Guyot Hall, Princeton University, Princeton, NJ 08544 USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10741962" target="_blank"〉PubMed〈/a〉
    Keywords: *Atmosphere ; Carbon/*analysis/*metabolism ; Carbon Dioxide/analysis/metabolism ; Carbon Isotopes ; *Ecosystem ; Nitrogen/analysis ; Oceans and Seas ; Oxygen/*analysis ; Oxygen Consumption ; Photosynthesis
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 5
    facet.materialart.
    Unknown
    Bacterial rhodopsin: evidence for a new type of phototrophy in the sea (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2000-09-16
    Description: Extremely halophilic archaea contain retinal-binding integral membrane proteins called bacteriorhodopsins that function as light-driven proton pumps. So far, bacteriorhodopsins capable of generating a chemiosmotic membrane potential in response to light have been demonstrated only in halophilic archaea. We describe here a type of rhodopsin derived from bacteria that was discovered through genomic analyses of naturally occuring marine bacterioplankton. The bacterial rhodopsin was encoded in the genome of an uncultivated gamma-proteobacterium and shared highest amino acid sequence similarity with archaeal rhodopsins. The protein was functionally expressed in Escherichia coli and bound retinal to form an active, light-driven proton pump. The new rhodopsin exhibited a photochemical reaction cycle with intermediates and kinetics characteristic of archaeal proton-pumping rhodopsins. Our results demonstrate that archaeal-like rhodopsins are broadly distributed among different taxa, including members of the domain Bacteria. Our data also indicate that a previously unsuspected mode of bacterially mediated light-driven energy generation may commonly occur in oceanic surface waters worldwide.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Beja, O -- Aravind, L -- Koonin, E V -- Suzuki, M T -- Hadd, A -- Nguyen, L P -- Jovanovich, S B -- Gates, C M -- Feldman, R A -- Spudich, J L -- Spudich, E N -- DeLong, E F -- HG01775-02S1/HG/NHGRI NIH HHS/ -- R01GM27750/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2000 Sep 15;289(5486):1902-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Monterey Bay Aquarium Research Institute, Moss Landing, CA 95039-0628, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10988064" target="_blank"〉PubMed〈/a〉
    Keywords: Aerobiosis ; Amino Acid Sequence ; Archaea/classification/physiology ; Bacteria/genetics ; *Bacterial Physiological Phenomena ; Cloning, Molecular ; Escherichia coli ; Gammaproteobacteria/classification/genetics/*physiology ; Molecular Sequence Data ; Oceans and Seas ; Photochemistry ; Photosynthesis ; Phylogeny ; Phytoplankton/genetics/physiology ; Protein Binding ; Proton Pumps/physiology ; Retinaldehyde/metabolism ; Rhodopsin/*physiology ; Rhodopsins, Microbial ; *Water Microbiology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 6
    facet.materialart.
    Unknown
    Trophic conversion of an obligate photoautotrophic organism through metabolic engineering (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-06-16
    Description: Most microalgae are obligate photoautotrophs and their growth is strictly dependent on the generation of photosynthetically derived energy. We show that the microalga Phaeodactylum tricornutum can be genetically engineered to thrive on exogenous glucose in the absence of light through the introduction of a gene encoding a glucose transporter (glut1 or hup1). This demonstrates that a fundamental change in the metabolism of an organism can be accomplished through the introduction of a single gene. This also represents progress toward the use of fermentation technology for large-scale commercial exploitation of algae by reducing limitations associated with light-dependent growth.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zaslavskaia, L A -- Lippmeier, J C -- Shih, C -- Ehrhardt, D -- Grossman, A R -- Apt, K E -- New York, N.Y. -- Science. 2001 Jun 15;292(5524):2073-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Martek Biosciences Corp., 6480 Dobbin Road, Columbia, MD 21045, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11408656" target="_blank"〉PubMed〈/a〉
    Keywords: Biological Transport ; Cell Line, Transformed ; Cell Membrane/metabolism ; Darkness ; Diatoms/*genetics/growth & development/*metabolism ; *Genetic Engineering ; Glucose/*metabolism ; Glucose Transporter Type 1 ; Glycolysis ; Green Fluorescent Proteins ; Humans ; Light ; Luminescent Proteins/genetics/metabolism ; Membrane Proteins/genetics/metabolism ; Microscopy, Confocal ; Molecular Weight ; Monosaccharide Transport Proteins/chemistry/*genetics/metabolism ; Photosynthesis ; Recombinant Fusion Proteins/metabolism ; Symporters ; Transformation, Genetic
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 7
    facet.materialart.
    Unknown
    Ecological Society of America. Forests: no greenhouse antidote? (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-08-25
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ferber, D -- New York, N.Y. -- Science. 2001 Aug 24;293(5534):1425.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11520966" target="_blank"〉PubMed〈/a〉
    Keywords: Carbon/metabolism ; Carbon Dioxide/*metabolism ; *Greenhouse Effect ; Photosynthesis ; Plant Leaves/metabolism ; Plant Roots/metabolism ; Trees/growth & development/*metabolism
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 8
    facet.materialart.
    Unknown
    Biogenic methane, hydrogen escape, and the irreversible oxidation of early Earth (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-08-04
    Description: The low O2 content of the Archean atmosphere implies that methane should have been present at levels approximately 10(2) to 10(3) parts per million volume (ppmv) (compared with 1.7 ppmv today) given a plausible biogenic source. CH4 is favored as the greenhouse gas that countered the lower luminosity of the early Sun. But abundant CH4 implies that hydrogen escapes to space (upward arrow space) orders of magnitude faster than today. Such reductant loss oxidizes the Earth. Photosynthesis splits water into O2 and H, and methanogenesis transfers the H into CH4. Hydrogen escape after CH4 photolysis, therefore, causes a net gain of oxygen [CO2 + 2H2O --〉 CH4 + 2O2 --〉 CO2 + O2 + 4H(upward arrow space)]. Expected irreversible oxidation (approximately 10(12) to 10(13) moles oxygen per year) may help explain how Earth's surface environment became irreversibly oxidized.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Catling, D C -- Zahnle, K J -- McKay, C -- New York, N.Y. -- Science. 2001 Aug 3;293(5531):839-43.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Mail Stop 245-3, Space Science Division, NASA Ames Research Center, Moffett Field, CA 94035, USA. catling@humbabe.arc.nasa.gov〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11486082" target="_blank"〉PubMed〈/a〉
    Keywords: *Atmosphere ; Bacteria/metabolism ; Carbon Dioxide ; Climate ; *Earth (Planet) ; Euryarchaeota/metabolism ; *Evolution, Planetary ; Geologic Sediments/chemistry ; *Hydrogen/metabolism ; Iron/analysis/metabolism ; *Methane/metabolism ; Oxidation-Reduction ; *Oxygen/metabolism ; Photosynthesis ; Sulfur/analysis/metabolism
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 9
    facet.materialart.
    Unknown
    Human appropriation of photosynthesis products (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-12-26
    Description: Previous global estimates of the human impact on terrestrial photosynthesis products depended heavily on extrapolation from plot-scale measurements. Here, we estimated this impact with the use of recent data, many of which were collected at global and continental scales. Monte Carlo techniques that incorporate known and estimated error in our parameters provided estimates of uncertainty. We estimate that humans appropriate 10 to 55% of terrestrial photosynthesis products. This broad range reflects uncertainty in key parameters and makes it difficult to ascertain whether we are approaching crisis levels in our use of the planet's resources. Improved estimates will require high-resolution global measures within agricultural lands and tropical forests.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rojstaczer, S -- Sterling, S M -- Moore, N J -- New York, N.Y. -- Science. 2001 Dec 21;294(5551):2549-52.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Center for Hydrologic Science and Division of Earth and Ocean Sciences, Duke University, Durham, NC 27708, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11752576" target="_blank"〉PubMed〈/a〉
    Keywords: *Agriculture ; Biomass ; Computer Simulation ; Conservation of Natural Resources ; *Ecosystem ; Food ; *Forestry ; Fresh Water ; *Human Activities ; Humans ; Monte Carlo Method ; Photosynthesis ; Plant Development ; *Plants/metabolism ; Probability ; Trees
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 10
    facet.materialart.
    Unknown
    Climate change as the dominant control on glacial-interglacial variations in C3 and C4 plant abundance (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-09-05
    Description: Although C4 plant expansions have been recognized in the late Miocene, identification of the underlying causes is complicated by the uncertainties associated with estimates of ancient precipitation, temperature, and partial pressure of atmospheric carbon dioxide (PCO2). Here we report the carbon isotopic compositions of leaf wax n-alkanes in lake sediment cores from two sites in Mesoamerica that have experienced contrasting moisture variations since the last glacial maximum. Opposite isotopic trends obtained from these two sites indicate that regional climate exerts a strong control on the relative abundance of C3 and C4 plants and that in the absence of favorable moisture and temperature conditions, low PCO2 alone is insufficient to drive an expansion of C4 plants.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Huang, Y -- Street-Perrott, F A -- Metcalfe, S E -- Brenner, M -- Moreland, M -- Freeman, K H -- New York, N.Y. -- Science. 2001 Aug 31;293(5535):1647-51.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Geological Sciences, Brown University, Providence, RI 02912, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11533488" target="_blank"〉PubMed〈/a〉
    Keywords: Alkanes/analysis ; Atmosphere ; Carbon Dioxide ; Carbon Isotopes/analysis ; *Climate ; *Ecosystem ; Fossils ; Fresh Water ; Geologic Sediments/*chemistry ; Guatemala ; Mexico ; Photosynthesis ; *Plant Development ; Plant Leaves/chemistry ; Plants/metabolism ; Poaceae/*growth & development/metabolism ; Pollen ; Rain ; Seasons ; Temperature ; Trees/growth & development ; Weather
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 11
    facet.materialart.
    Unknown
    Paleoclimate. Corals, chemistry, and climate (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-04-16
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Schrag, Daniel P -- Linsley, Braddock K -- New York, N.Y. -- Science. 2002 Apr 12;296(5566):277-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory for Geochemical Oceanography, Department of Earth and Planetary Sciences, Harvard University, Cambridge, MA 02138, USA. schrag@eps.harvard.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11951026" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Calcium/analysis ; Calcium Carbonate/*chemistry ; Chemical Precipitation ; Climate ; Cnidaria/*chemistry/growth & development/physiology ; Eukaryota/*physiology ; Oceans and Seas ; Photosynthesis ; Seasons ; *Seawater ; Strontium/analysis ; *Symbiosis ; Temperature ; Time ; *Tropical Climate
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 12
    facet.materialart.
    Unknown
    Photosynthetic light harvesting by carotenoids: detection of an intermediate excited state (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-12-21
    Description: We present the first direct evidence of the presence of an intermediate singlet excited state (Sx) mediating the internal conversion from S2 to S1 in carotenoids. The S2 to Sx transition is extremely fast and is completed within approximately 50 femtoseconds. These results require a reassessment of the energy transfer pathways from carotenoids to chlorophylls in the primary step of photosynthesis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cerullo, G -- Polli, D -- Lanzani, G -- De Silvestri, S -- Hashimoto, H -- Cogdell, R J -- New York, N.Y. -- Science. 2002 Dec 20;298(5602):2395-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉National Laboratory for Ultrafast and Ultraintense Optical Science (INFM), Dipartimento di Fisica, Politecnico di Milano, Piazza L. da Vinci 32, 20133 Milano, Italy. giulio.cerullo@fisi.polimi.it〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12493917" target="_blank"〉PubMed〈/a〉
    Keywords: Carotenoids/*chemistry/*metabolism ; Chemistry, Physical ; Chlorophyll/chemistry/metabolism ; Cyclohexanes ; Energy Transfer ; *Light ; Photosynthesis ; Physicochemical Phenomena ; Spectrum Analysis ; Temperature ; beta Carotene/*chemistry/*metabolism
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 13
    facet.materialart.
    Unknown
    Paleontology. Earliest signs of life just oddly shaped crud? (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-03-09
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kerr, Richard A -- New York, N.Y. -- Science. 2002 Mar 8;295(5561):1812.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11884724" target="_blank"〉PubMed〈/a〉
    Keywords: Australia ; *Bacteria/cytology ; Cyanobacteria/cytology ; *Fossils ; Geologic Sediments/*chemistry/*microbiology ; *Life ; Paleontology ; Photosynthesis
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 14
    facet.materialart.
    Unknown
    Ecology. Looking beneath the surface (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-12-10
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Morgan, Jack A -- New York, N.Y. -- Science. 2002 Dec 6;298(5600):1903-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉USDA-ARS Rangeland Resources Research Unit, 1701 Centre Avenue, Fort Collins, CO 80526, USA. morgan@lamar.colostate.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12471239" target="_blank"〉PubMed〈/a〉
    Keywords: Atmosphere ; California ; *Carbon Dioxide/metabolism ; Climate ; *Ecosystem ; Photosynthesis ; Poaceae/*growth & development/metabolism ; Soil ; Temperature
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 15
    facet.materialart.
    Unknown
    Archean molecular fossils and the early rise of eukaryotes (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-08-14
    Description: Molecular fossils of biological lipids are preserved in 2700-million-year-old shales from the Pilbara Craton, Australia. Sequential extraction of adjacent samples shows that these hydrocarbon biomarkers are indigenous and syngenetic to the Archean shales, greatly extending the known geological range of such molecules. The presence of abundant 2alpha-methylhopanes, which are characteristic of cyanobacteria, indicates that oxygenic photosynthesis evolved well before the atmosphere became oxidizing. The presence of steranes, particularly cholestane and its 28- to 30-carbon analogs, provides persuasive evidence for the existence of eukaryotes 500 million to 1 billion years before the extant fossil record indicates that the lineage arose.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Brocks, J J -- Logan, G A -- Buick, R -- Summons, R E -- New York, N.Y. -- Science. 1999 Aug 13;285(5430):1033-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉School of Geosciences, University of Sydney, Sydney, NSW 2006, Australia. jochen.brocks@agso.gov.au〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10446042" target="_blank"〉PubMed〈/a〉
    Keywords: Atmosphere ; Australia ; *Biological Evolution ; Biomarkers/analysis ; Cholestanes/analysis ; Cyanobacteria/physiology ; Eukaryotic Cells/*physiology ; Fossils ; Geologic Sediments/*chemistry ; Hydrocarbons/*analysis ; Lipids/*analysis ; Paleontology ; Photosynthesis ; Steroids/*analysis ; Triterpenes/*analysis
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 16
    facet.materialart.
    Unknown
    Findings from undersea to outer space. Power from pond scum (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2000-03-25
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kaiser, J -- New York, N.Y. -- Science. 2000 Mar 3;287(5458):1581.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10733421" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Chlamydomonas reinhardtii/*metabolism ; Hydrogen/*metabolism ; Nitrogen ; Oxygen/metabolism ; Photosynthesis
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 17
    facet.materialart.
    Unknown
    Powering the nanoworld (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-02-24
    Description: Devens Gust, a chemist at Arizona State University in Tempe, and a handful of colleagues have built tiny refineries that convert the energy in sunlight to chemical fuel to power nanomachines. The fuel in this case is adenosine triphosphate, the same energy-rich molecule that powers chemical reactions inside cells. At last August's meeting of the American Chemical Society in Washington, D.C., Gust reported that he and his colleagues had collaborated with other groups to run their protein-based molecular machines on little more than sunlight.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Service, R F -- New York, N.Y. -- Science. 2000 Nov 24;290(5496):1528.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11185513" target="_blank"〉PubMed〈/a〉
    Keywords: Adenosine Triphosphate/*metabolism ; *Liposomes ; Miniaturization ; *Molecular Motor Proteins ; Photosynthesis ; Proton-Translocating ATPases/metabolism ; *Sunlight
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 18
    facet.materialart.
    Unknown
    Carbon cycle. Discriminating plants (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-04-05
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Woodward, F I -- New York, N.Y. -- Science. 2001 Mar 30;291(5513):2562-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Animal and Plant Sciences, University of Sheffield, Sheffield, S10 2TN, UK. F.I.Woodward@Sheffield.ac.uk〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11286281" target="_blank"〉PubMed〈/a〉
    Keywords: *Atmosphere ; Carbon Dioxide/analysis/*metabolism ; Carbonic Anhydrases/metabolism ; Chloroplasts/metabolism ; Ecosystem ; Oxygen Isotopes/*analysis ; Photosynthesis ; Plant Leaves/metabolism ; Plants/*metabolism ; Water/metabolism
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 19
    facet.materialart.
    Unknown
    Rising CO2 levels and the fecundity of forest trees (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-04-09
    Description: We determined the reproductive response of 19-year-old loblolly pine (Pinus taeda) to 4 years of carbon dioxide (CO2) enrichment (ambient concentration plus 200 microliters per liter) in an intact forest. After 3 years of CO2 fumigation, trees were twice as likely to be reproductively mature and produced three times as many cones and seeds as trees at ambient CO2 concentration. A disproportionate carbon allocation to reproduction under CO2 enrichment results in trees reaching maturity sooner and at a smaller size. This reproductive response to future increases in atmospheric CO2 concentration is expected to change loblolly dispersal and recruitment patterns.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉LaDeau, S L -- Clark, J S -- New York, N.Y. -- Science. 2001 Apr 6;292(5514):95-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biology and University Program in Ecology, Duke University, Durham, NC 27708, USA. sll8@duke.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11292871" target="_blank"〉PubMed〈/a〉
    Keywords: Atmosphere ; *Carbon Dioxide/metabolism/pharmacology ; *Ecosystem ; Greenhouse Effect ; Gymnosperms/growth & development/*physiology ; North Carolina ; Photosynthesis ; Probability ; Reproduction ; Seeds/metabolism ; Species Specificity ; Trees/growth & development/*physiology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 20
    facet.materialart.
    Unknown
    Control of nitrogen export from watersheds by headwater streams (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-04-09
    Description: A comparative (15)N-tracer study of nitrogen dynamics in headwater streams from biomes throughout North America demonstrates that streams exert control over nutrient exports to rivers, lakes, and estuaries. The most rapid uptake and transformation of inorganic nitrogen occurred in the smallest streams. Ammonium entering these streams was removed from the water within a few tens to hundreds of meters. Nitrate was also removed from stream water but traveled a distance 5 to 10 times as long, on average, as ammonium. Despite low ammonium concentration in stream water, nitrification rates were high, indicating that small streams are potentially important sources of atmospheric nitrous oxide. During seasons of high biological activity, the reaches of headwater streams typically export downstream less than half of the input of dissolved inorganic nitrogen from their watersheds.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Peterson, B J -- Wollheim, W M -- Mulholland, P J -- Webster, J R -- Meyer, J L -- Tank, J L -- Marti, E -- Bowden, W B -- Valett, H M -- Hershey, A E -- McDowell, W H -- Dodds, W K -- Hamilton, S K -- Gregory, S -- Morrall, D D -- New York, N.Y. -- Science. 2001 Apr 6;292(5514):86-90.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Ecosystems Center, Marine Biological Laboratory, Woods Hole, MA 02543, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11292868" target="_blank"〉PubMed〈/a〉
    Keywords: Absorption ; Animals ; Bacteria/metabolism ; Biofilms ; *Ecosystem ; Eukaryota/metabolism ; *Fresh Water ; Fungi/metabolism ; Geologic Sediments ; Nitrates/metabolism ; Nitrogen/*metabolism ; Oxidation-Reduction ; Photosynthesis ; Quaternary Ammonium Compounds/metabolism ; Seasons ; United States
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 21
    facet.materialart.
    Unknown
    Earth history. The rise of atmospheric oxygen (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-08-04
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kasting, J F -- New York, N.Y. -- Science. 2001 Aug 3;293(5531):819-20.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Geosciences, Pennsylvania State University, University Park, PA 16802, USA. kasting@essc.psu.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11486080" target="_blank"〉PubMed〈/a〉
    Keywords: *Atmosphere ; Carbon Isotopes/analysis ; Cyanobacteria/metabolism ; *Earth (Planet) ; *Evolution, Planetary ; Geologic Sediments/chemistry ; *Hydrogen ; Methane/metabolism ; Oxidation-Reduction ; *Oxygen/metabolism ; Photosynthesis ; Sulfur Isotopes/analysis ; Temperature
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 22
    facet.materialart.
    Unknown
    Planetary science. Life without photosynthesis (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-06-16
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chyba, C F -- Hand, K P -- New York, N.Y. -- Science. 2001 Jun 15;292(5524):2026-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Center for the Study of Life in the Universe, SETI Institute, Mountain View, CA 94404, USA. chyba@seti.org〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11408649" target="_blank"〉PubMed〈/a〉
    Keywords: Biomass ; Carbon ; *Exobiology ; *Extraterrestrial Environment ; Hydrogen ; Hydrogen Peroxide ; Ice ; *Jupiter ; Meteoroids ; Oxidation-Reduction ; *Oxygen/chemistry ; Photosynthesis ; Potassium ; Water
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 23
    facet.materialart.
    Unknown
    Robotic observations of dust storm enhancement of carbon biomass in the North Pacific (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-10-26
    Description: Two autonomous robotic profiling floats deployed in the subarctic North Pacific on 10 April 2001 provided direct records of carbon biomass variability from surface to 1000 meters below surface at daily and diurnal time scales. Eight months of real-time data documented the marine biological response to natural events, including hydrographic changes, multiple storms, and the April 2001 dust event. High-frequency observations of upper ocean particulate organic carbon variability show a near doubling of biomass in the mixed layer over a 2-week period after the passage of a cloud of Gobi desert dust. The temporal evolution of particulate organic carbon enhancement and an increase in chlorophyll use efficiency after the dust storm suggest a biotic response to a natural iron fertilization by the dust.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bishop, James K B -- Davis, Russ E -- Sherman, Jeffrey T -- New York, N.Y. -- Science. 2002 Oct 25;298(5594):817-21.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Earth Sciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, MS 90-1116, Berkeley, CA 94708, USA. JKBishop@lbl.gov〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12399588" target="_blank"〉PubMed〈/a〉
    Keywords: Atmosphere/chemistry ; *Biomass ; Carbon/*analysis ; Chlorophyll/analysis ; *Dust ; Geologic Sediments/chemistry ; Iron/analysis ; Pacific Ocean ; Photosynthesis ; Phytoplankton/*growth & development ; Robotics ; *Seawater ; *Wind
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 24
    facet.materialart.
    Unknown
    Life and the evolution of Earth's atmosphere (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-05-11
    Description: Harvesting light to produce energy and oxygen (photosynthesis) is the signature of all land plants. This ability was co-opted from a precocious and ancient form of life known as cyanobacteria. Today these bacteria, as well as microscopic algae, supply oxygen to the atmosphere and churn out fixed nitrogen in Earth's vast oceans. Microorganisms may also have played a major role in atmosphere evolution before the rise of oxygen. Under the more dim light of a young sun cooler than today's, certain groups of anaerobic bacteria may have been pumping out large amounts of methane, thereby keeping the early climate warm and inviting. The evolution of Earth's atmosphere is linked tightly to the evolution of its biota.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kasting, James F -- Siefert, Janet L -- New York, N.Y. -- Science. 2002 May 10;296(5570):1066-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Geosciences, 443 Deike, The Pennsylvania State University, University Park, PA 16802, USA. kasting@essc.psu.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12004117" target="_blank"〉PubMed〈/a〉
    Keywords: *Atmosphere ; Biological Evolution ; Cyanobacteria/*physiology ; Earth (Planet) ; Eukaryota/*physiology ; Euryarchaeota/*physiology ; *Evolution, Planetary ; Methane/metabolism ; Nitrogen/metabolism ; Nitrogen Fixation ; Oxygen/metabolism ; Photosynthesis ; Symbiosis ; Water Microbiology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 25
    facet.materialart.
    Unknown
    Mass extinctions. No 'darkness at noon' to do in the dinosaurs? (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-02-23
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kerr, Richard A -- New York, N.Y. -- Science. 2002 Feb 22;295(5559):1445-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11859166" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Dinosaurs ; Dust ; *Ecosystem ; Fires ; *Minor Planets ; Photosynthesis ; Smoke
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 26
    facet.materialart.
    Unknown
    Leaves in the dark see the light (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-05-18
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Foyer, C H -- Noctor, G -- New York, N.Y. -- Science. 1999 Apr 23;284(5414):599-601.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry and Physiology, IACR-Rothamsted, Harpenden, Herts AL5 2JQ, UK. christine.foyer@bbsrc.ac.uk〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10328743" target="_blank"〉PubMed〈/a〉
    Keywords: Adaptation, Physiological ; Arabidopsis/genetics/*metabolism ; Ascorbate Peroxidases ; Chloroplasts/metabolism ; Electron Transport ; *Gene Expression Regulation, Plant ; Hydrogen Peroxide/metabolism ; *Light ; Oxidation-Reduction ; Peroxidases/genetics ; Photosynthesis ; Plant Leaves/genetics/*metabolism ; Reactive Oxygen Species/metabolism ; Signal Transduction
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 27
    facet.materialart.
    Unknown
    Systemic signaling and acclimation in response to excess excitation energy in Arabidopsis (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-04-24
    Description: Land plants are sessile and have developed sophisticated mechanisms that allow for both immediate and acclimatory responses to changing environments. Partial exposure of low light-adapted Arabidopsis plants to excess light results in a systemic acclimation to excess excitation energy and consequent photooxidative stress in unexposed leaves. Thus, plants possess a mechanism to communicate excess excitation energy systemically, allowing them to mount a defense against further episodes of such stress. Systemic redox changes in the proximity of photosystem II, hydrogen peroxide, and the induction of antioxidant defenses are key determinants of this mechanism of systemic acquired acclimation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Karpinski, S -- Reynolds, H -- Karpinska, B -- Wingsle, G -- Creissen, G -- Mullineaux, P -- New York, N.Y. -- Science. 1999 Apr 23;284(5414):654-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Forest Genetics and Plant Physiology, Faculty of Forestry, Swedish University of Agricultural Sciences, SE-901 83 Umea, Sweden. stanislaw.karpinski@genfys.slu.se〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10213690" target="_blank"〉PubMed〈/a〉
    Keywords: Adaptation, Physiological ; Arabidopsis/genetics/*metabolism ; Ascorbate Peroxidases ; Catalase/pharmacology ; Chloroplasts/metabolism ; Diuron/pharmacology ; Electron Transport ; *Gene Expression Regulation, Plant ; Hydrogen Peroxide/*metabolism/pharmacology ; *Light ; Oxidation-Reduction ; Oxidative Stress ; Peroxidases/biosynthesis/*genetics ; Photosynthesis ; Photosynthetic Reaction Center Complex Proteins/metabolism ; Photosystem II Protein Complex ; Plant Leaves/*metabolism ; Plants, Genetically Modified ; Recombinant Fusion Proteins/biosynthesis ; Signal Transduction
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 28
    facet.materialart.
    Unknown
    Influence of carbonic anhydrase activity in terrestrial vegetation on the 18O content of atmospheric CO2 (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-04-03
    Description: The oxygen-18 (18O) content of atmospheric carbon dioxide (CO2) is an important indicator of CO2 uptake on land. It has generally been assumed that during photosynthesis, oxygen in CO2 reaches isotopic equilibrium with oxygen in 18O-enriched water in leaves. We show, however, large differences in the activity of carbonic anhydrase (which catalyzes CO2 hydration and 18O exchange in leaves) among major plant groups that cause variations in the extent of 18O equilibrium (theta(eq)). A clear distinction in theta(eq) between C3 trees and shrubs, and C4 grasses makes atmospheric C18OO a potentially sensitive indicator to changes in C3 and C4 productivity. We estimate a global mean theta(eq) value of approximately 0.8, which reasonably reconciles inconsistencies between 18O budgets of atmospheric O2 (Dole effect) and CO2.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gillon, J -- Yakir, D -- New York, N.Y. -- Science. 2001 Mar 30;291(5513):2584-7. Epub 2001 Mar 8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Environmental Science and Energy Research, Weizmann Institute of Science, Rehovot 76100, Israel.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11283366" target="_blank"〉PubMed〈/a〉
    Keywords: *Atmosphere ; Carbon Dioxide/*analysis/*metabolism ; Carbonic Anhydrases/*metabolism ; Climate ; Oxygen/metabolism ; Oxygen Isotopes/*analysis/metabolism ; Photosynthesis ; Plant Leaves/enzymology/metabolism ; Plants/enzymology/*metabolism ; Poaceae/enzymology/metabolism ; Seawater ; Soil ; Water/metabolism
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 29
    facet.materialart.
    Unknown
    Paleoecology. How grasses got the upper hand (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-09-05
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kerr, R A -- New York, N.Y. -- Science. 2001 Aug 31;293(5535):1572-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11533453" target="_blank"〉PubMed〈/a〉
    Keywords: *Atmosphere ; *Carbon Dioxide ; *Climate ; *Ecosystem ; Fossils ; Guatemala ; Mexico ; Photosynthesis ; Poaceae/*growth & development/metabolism ; Water
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 30
    facet.materialart.
    Unknown
    Biochemistry. How to make a superior cell (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-06-16
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Stephanopoulos, G -- Kelleher, J -- New York, N.Y. -- Science. 2001 Jun 15;292(5524):2024-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA. gregstep@mit.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11408647" target="_blank"〉PubMed〈/a〉
    Keywords: Catalysis ; *Cell Physiological Phenomena ; Diatoms/*genetics/*metabolism ; Gene Expression Regulation ; *Genetic Engineering ; Genetic Therapy ; Glucose/metabolism ; Glucose Transporter Type 1 ; Humans ; Metabolic Diseases/therapy ; Models, Biological ; Models, Genetic ; Monosaccharide Transport Proteins/*genetics/metabolism ; Photosynthesis
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 31
    facet.materialart.
    Unknown
    Interannual variability in the North Atlantic Ocean carbon sink (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-12-21
    Description: The North Atlantic is believed to represent the largest ocean sink for atmospheric carbon dioxide in the Northern Hemisphere, yet little is known about its temporal variability. We report an 18-year time series of upper-ocean inorganic carbon observations from the northwestern subtropical North Atlantic near Bermuda that indicates substantial variability in this sink. We deduce that the carbon variability at this site is largely driven by variations in winter mixed-layer depths and by sea surface temperature anomalies. Because these variations tend to occur in a basinwide coordinated pattern associated with the North Atlantic Oscillation, it is plausible that the entire North Atlantic Ocean may vary in concert, resulting in a variability of the strength of the North Atlantic carbon sink of about +/-0.3 petagrams of carbon per year (1 petagram = 10(15) grams) or nearly +/-50%. This extrapolation is supported by basin-wide estimates from atmospheric carbon dioxide inversions.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gruber, Nicolas -- Keeling, Charles D -- Bates, Nicholas R -- New York, N.Y. -- Science. 2002 Dec 20;298(5602):2374-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute of Geophysics and Planetary Physics and Department of Atmospheric Sciences, University of California, Los Angeles, CA 90095, USA. ngruber@igpp.ucla.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12493911" target="_blank"〉PubMed〈/a〉
    Keywords: Atlantic Ocean ; Atmosphere ; Bermuda ; Carbon/*analysis ; Carbon Dioxide/*analysis/metabolism ; Carbon Isotopes/analysis ; Climate ; Models, Theoretical ; Photosynthesis ; Seasons ; Seawater/*chemistry ; Temperature
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 32
    facet.materialart.
    Unknown
    Hydrothermal systems. Stirring the oceanic incubator (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-05-25
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dziak, Robert P -- Johnson, H Paul -- New York, N.Y. -- Science. 2002 May 24;296(5572):1406-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12029115" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bacterial Physiological Phenomena ; *Disasters ; *Ecosystem ; Geologic Sediments/microbiology ; Hydrostatic Pressure ; Pacific Ocean ; Photosynthesis ; Pressure ; *Seawater ; Temperature ; Time Factors ; Water Movements
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 33
    facet.materialart.
    Unknown
    Oceanography. Small critters--big effects (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-06-18
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Morel, Andre -- Antoine, David -- New York, N.Y. -- Science. 2002 Jun 14;296(5575):1980-2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratoire d'Oceanographie de Villefranche, Universite Pierre et Marie Curie and CNRS, 06238 Villefranche-sur-mer, France. morel@obs-vlfr.fr〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12065823" target="_blank"〉PubMed〈/a〉
    Keywords: Atmosphere ; *Biomass ; Carbon Dioxide/metabolism ; Chlorophyll/analysis ; Computer Simulation ; *Ecosystem ; Eukaryota/metabolism/*physiology ; Geography ; Light ; Mathematics ; Models, Biological ; Oceans and Seas ; Oxygen/metabolism ; Photosynthesis ; Phytoplankton/metabolism/*physiology ; Seasons ; *Seawater ; Spacecraft
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 34
    facet.materialart.
    Unknown
    Climate change. Ups and downs of CO2 uptake (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-12-21
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Quay, Paul -- New York, N.Y. -- Science. 2002 Dec 20;298(5602):2344.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉School of Oceanography, University of Washington, Seattle, WA 98195, USA. pdquay@u.washington.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12493904" target="_blank"〉PubMed〈/a〉
    Keywords: Atlantic Ocean ; Atmosphere ; Bermuda ; Carbon/analysis ; Carbon Dioxide/*analysis/metabolism ; *Climate ; Models, Theoretical ; Photosynthesis ; Seasons ; Seawater/*chemistry ; Temperature
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 35
    facet.materialart.
    Unknown
    A new molecular window on early life (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-09-04
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Knoll, A H -- New York, N.Y. -- Science. 1999 Aug 13;285(5430):1025-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Botanical Museum, Harvard University, Cambridge, MA 02138, USA. aknoll@oeb.harvard.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10475845" target="_blank"〉PubMed〈/a〉
    Keywords: Atmosphere ; Australia ; Biological Evolution ; Biomarkers/analysis ; Cyanobacteria/*physiology ; Eukaryotic Cells/*physiology ; Fossils ; Geologic Sediments/*chemistry ; Hydrocarbons/*analysis ; Lipids/*analysis ; Oxygen ; Paleontology ; Photosynthesis ; Sterols/metabolism ; Triterpenes/*analysis
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 36
    facet.materialart.
    Unknown
    Biochemistry. High-tech lures hook into new marine microbes (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2000-09-30
    Description: Two scientific teams, one of which reports its findings on page 1902, have identified large populations of bacteria that convert sunlight hitting the sea surface into energy. These two groups of bacteria, which harness light to move electrons and power cellular processes, likely help bring energy into the food chain. And that could help to explain a puzzle that has confounded researchers trying to understand marine ecosystems: how so many bacteria can survive in the open ocean, where there seems to be relatively little for them to eat.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pennisi, E -- New York, N.Y. -- Science. 2000 Sep 15;289(5486):1869.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11012353" target="_blank"〉PubMed〈/a〉
    Keywords: Aerobiosis ; Bacteria/genetics ; *Bacterial Physiological Phenomena ; Gammaproteobacteria/genetics/*physiology ; Oceans and Seas ; Photosynthesis ; Phytoplankton/genetics/physiology ; Rhodopsin/*physiology ; Rhodopsins, Microbial ; *Water Microbiology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 37
    facet.materialart.
    Unknown
    Bioengineering. Plant scientists see big potential in tiny plastids (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-01-12
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gewolb, Josh -- New York, N.Y. -- Science. 2002 Jan 11;295(5553):258-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11786623" target="_blank"〉PubMed〈/a〉
    Keywords: Cells, Cultured ; Chloroplasts/genetics ; *Genes, Plant ; *Genetic Engineering ; Genome, Plant ; Human Growth Hormone/biosynthesis/chemistry/genetics ; Humans ; Lycopersicon esculentum/genetics ; Photosynthesis ; *Plants, Genetically Modified/metabolism ; Plastids/*genetics ; Protein Folding ; Recombinant Proteins/biosynthesis ; Ribulose-Bisphosphate Carboxylase/genetics/metabolism ; Tobacco/genetics/metabolism ; *Transformation, Genetic
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 38
    facet.materialart.
    Unknown
    Plant genetics. Surviving the long nights: how plants keep their cool (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-08-24
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Brown, Kathryn -- New York, N.Y. -- Science. 2002 Aug 23;297(5585):1267-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12193768" target="_blank"〉PubMed〈/a〉
    Keywords: *Adaptation, Physiological ; Altitude ; Arabidopsis/genetics/physiology ; Carbon Dioxide/metabolism ; *Cold Temperature ; *Genes, Plant ; Gymnosperms/*physiology ; Photosynthesis ; *Plant Physiological Phenomena ; Plant Structures/physiology ; Seasons ; Trees
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 39
    facet.materialart.
    Unknown
    Impacts of soil faunal community composition on model grassland ecosystems (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-10-19
    Description: Human impacts, including global change, may alter the composition of soil faunal communities, but consequences for ecosystem functioning are poorly understood. We constructed model grassland systems in the Ecotron controlled environment facility and manipulated soil community composition through assemblages of different animal body sizes. Plant community composition, microbial and root biomass, decomposition rate, and mycorrhizal colonization were all markedly affected. However, two key ecosystem processes, aboveground net primary productivity and net ecosystem productivity, were surprisingly resistant to these changes. We hypothesize that positive and negative faunal-mediated effects in soil communities cancel each other out, causing no net ecosystem effects.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bradford, M A -- Jones, T H -- Bardgett, R D -- Black, H I J -- Boag, B -- Bonkowski, M -- Cook, R -- Eggers, T -- Gange, A C -- Grayston, S J -- Kandeler, E -- McCaig, A E -- Newington, J E -- Prosser, J I -- Setala, H -- Staddon, P L -- Tordoff, G M -- Tscherko, D -- Lawton, J H -- New York, N.Y. -- Science. 2002 Oct 18;298(5593):615-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Natural Environment Research Council Centre for Population Biology, Department of Biological Sciences, Imperial College at Silwood Park, Ascot, SL5 7PY, UK. m.a.bradford@ic.ac.uk〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12386334" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bacteria/growth & development ; Biomass ; Body Constitution ; Carbon/metabolism ; Ecological Systems, Closed ; *Ecosystem ; Environment ; Fungi/growth & development ; Oxygen Consumption ; Photosynthesis ; Plant Development ; Plant Roots/metabolism ; Poaceae/growth & development ; Population Density ; *Soil ; Soil Microbiology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 40
    facet.materialart.
    Unknown
    The problematic rise of Archean oxygen (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-02-23
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Towe, Kenneth M -- New York, N.Y. -- Science. 2002 Feb 22;295(5559):1419.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉230 West Adams Street, Tennille, GA 31089, USA. towe@accucomm.net〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11859156" target="_blank"〉PubMed〈/a〉
    Keywords: *Atmosphere ; Carbon Dioxide/metabolism ; Cyanobacteria/metabolism ; *Earth (Planet) ; Ecosystem ; Euryarchaeota/metabolism ; Evolution, Planetary ; Methane/metabolism ; Oxidation-Reduction ; *Oxygen/metabolism ; Photosynthesis
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 41
    facet.materialart.
    Unknown
    Smoky skies, mosquitoes, and disease (1997)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1997-06-20
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mims, F M 3rd -- Holben, B N -- Eck, T F -- Montgomery, B C -- Grant, W B -- New York, N.Y. -- Science. 1997 Jun 20;276(5320):1774-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9206832" target="_blank"〉PubMed〈/a〉
    Keywords: Aerosols ; Brazil ; Fires ; Humans ; Infection/epidemiology/*etiology ; Photosynthesis ; Respiratory Tract Diseases/epidemiology/*etiology ; Smoke/*adverse effects ; Sunlight ; *Ultraviolet Rays
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 42
    facet.materialart.
    Unknown
    Aerobic sulfate reduction in microbial mats (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-03-22
    Description: Measurements of bacterial sulfate reduction and dissolved oxygen (O2) in hypersaline bacterial mats from Baja California, Mexico, revealed that sulfate reduction occurred consistently within the well-oxygenated photosynthetic zone of the mats. This evidence that dissimilatory sulfate reduction can occur in the presence of O2 challenges the conventional view that sulfate reduction is a strictly anaerobic process. At constant temperature, the rates of sulfate reduction in oxygenated mats during daytime were similar to rates in anoxic mats at night: thus, during a 24-hour cycle, variations in light and O2 have little effect on rates of sulfate reduction in these mats.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Canfield, D E -- Des Marais, D J -- New York, N.Y. -- Science. 1991 Mar 22;251:1471-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉National Aeronautics and Space Administration-Ames Research Center, Space Science Division, Moffett Field, CA 94035, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11538266" target="_blank"〉PubMed〈/a〉
    Keywords: Bacteria, Aerobic/physiology ; Biological Evolution ; Cyanobacteria/metabolism/physiology ; Light ; Marine Biology ; Mexico ; Oxidation-Reduction ; Oxygen/*analysis/metabolism/physiology ; Photosynthesis ; Seawater/chemistry ; Sulfates/*metabolism ; Sulfur-Reducing Bacteria/*metabolism ; Temperature ; Water Microbiology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 43
    facet.materialart.
    Unknown
    Electron-tunneling pathways in proteins (1992)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1992-12-11
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Beratan, D N -- Onuchic, J N -- Winkler, J R -- Gray, H B -- New York, N.Y. -- Science. 1992 Dec 11;258(5089):1740-1.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Chemistry, University of Pittsburgh, PA 15260.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1334572" target="_blank"〉PubMed〈/a〉
    Keywords: Cytochrome c Group/*chemistry/metabolism ; Cytochrome-c Peroxidase/*chemistry/metabolism ; *Electron Transport ; Models, Molecular ; Photosynthesis ; Protein Conformation ; Proteins/*chemistry ; Saccharomyces cerevisiae/metabolism ; X-Ray Diffraction
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 44
    facet.materialart.
    Unknown
    Partial symmetrization of the photosynthetic reaction center (1990)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1990-06-15
    Description: The bacterial photosynthetic reaction center (RC) is a pigmented intrinsic membrane protein that performs the primary charge separation event of photosynthesis, thereby converting light to chemical energy. The RC pigments are bound primarily by two homologous peptides, the L and M subunits, each containing five transmembrane helices. These alpha helices and pigments are arranged in an approximate C2 symmetry and form two possible electron transfer pathways. Only one of these pathways is actually used. In an attempt to identify nonhomologous residues that are responsible for functional differences between the two branches, homologous helical regions that interact extensively with the pigments were genetically symmetrized (that is, exchanged). For example, replacement of the fourth transmembrane helix (D helix) in the M subunit with the homologous helix from the L subunit yields photosynthetically inactive RCs lacking a critical photoactive pigment. Photosynthetic revertants have been isolated in which single amino acid substitutions (intragenic suppressors) compensate for this partial symmetrization.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Robles, S J -- Breton, J -- Youvan, D C -- RIGM42645A/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1990 Jun 15;248(4961):1402-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Graduate Program in Applied Biological Sciences, Massachusetts Institute of Technology, Cambridge 02139.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2192455" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; *Bacterial Proteins/genetics ; Cloning, Molecular ; Electron Transport ; Macromolecular Substances ; Molecular Sequence Data ; Molecular Structure ; Mutation ; Photosynthesis ; Photosynthetic Reaction Center Complex Proteins ; Protein Conformation ; Rhodopseudomonas/analysis/genetics/growth & development ; Spectrophotometry
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 45
    facet.materialart.
    Unknown
    Ecology. Photosymbiosis and the evolution of modern coral reefs (2006)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2006-05-13
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Stanley, George D Jr -- New York, N.Y. -- Science. 2006 May 12;312(5775):857-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉University of Montana Paleontology Center, Missoula, MT 59812, USA. george.stanley@umontana.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16690848" target="_blank"〉PubMed〈/a〉
    Keywords: Adaptation, Physiological ; Animals ; Anthozoa/growth & development/*physiology ; *Biological Evolution ; Calcification, Physiologic ; Calcium Carbonate/metabolism ; Carbon Dioxide/metabolism ; Climate ; *Ecosystem ; Eukaryota/growth & development/*physiology ; Fossils ; Photosynthesis ; Sunlight ; *Symbiosis
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 46
    facet.materialart.
    Unknown
    Ecology. Climate change and crop yields: beyond Cassandra (2006)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2006-07-01
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Schimel, David -- New York, N.Y. -- Science. 2006 Jun 30;312(5782):1889-90.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Climate and Global Dynamics Division, National Center for Atmospheric Research, Boulder, CO 80307, USA. schimel@ucar.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16809520" target="_blank"〉PubMed〈/a〉
    Keywords: Atmosphere ; *Carbon Dioxide ; *Climate ; Crops, Agricultural/*growth & development/metabolism ; Ecosystem ; Forecasting ; Models, Theoretical ; Photosynthesis ; Temperature ; Zea mays/growth & development/metabolism
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 47
    facet.materialart.
    Unknown
    Evolution. Tracing oxygen's imprint on earth's metabolic evolution (2006)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2006-03-25
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Falkowski, Paul G -- New York, N.Y. -- Science. 2006 Mar 24;311(5768):1724-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Environmental Biophysics and Molecular Ecology Program, Institute of Marine and Coastal Sciences and Department of Geological Sciences, Rutgers University, New Brunswick, NJ 08901, USA. falko@imcs.rutgers.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16556831" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Biological Evolution ; Computational Biology ; Electron Transport ; Electrons ; Energy Metabolism ; Eukaryotic Cells/metabolism ; *Evolution, Molecular ; Gene Duplication ; Gene Transfer, Horizontal ; *Metabolism ; Oxidation-Reduction ; Oxygen/*metabolism ; Photosynthesis ; Reactive Oxygen Species/metabolism ; Selection, Genetic ; Water/metabolism
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 48
    facet.materialart.
    Unknown
    Ecology. Plant wannabes (2006)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2006-09-02
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pennisi, Elizabeth -- New York, N.Y. -- Science. 2006 Sep 1;313(5791):1229.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16946048" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Biological Evolution ; Chloroplasts/*physiology ; Digestive System/anatomy & histology/microbiology ; Digestive System Physiological Phenomena ; Eukaryota/*physiology ; Gastropoda/genetics/microbiology/*physiology ; Genes ; Photosynthesis ; *Symbiosis
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 49
    facet.materialart.
    Unknown
    A 3-hydroxypropionate/4-hydroxybutyrate autotrophic carbon dioxide assimilation pathway in Archaea (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2007-12-15
    Description: The assimilation of carbon dioxide (CO2) into organic material is quantitatively the most important biosynthetic process. We discovered that an autotrophic member of the archaeal order Sulfolobales, Metallosphaera sedula, fixed CO2 with acetyl-coenzyme A (acetyl-CoA)/propionyl-CoA carboxylase as the key carboxylating enzyme. In this system, one acetyl-CoA and two bicarbonate molecules were reductively converted via 3-hydroxypropionate to succinyl-CoA. This intermediate was reduced to 4-hydroxybutyrate and converted into two acetyl-CoA molecules via 4-hydroxybutyryl-CoA dehydratase. The key genes of this pathway were found not only in Metallosphaera but also in Sulfolobus, Archaeoglobus, and Cenarchaeum species. Moreover, the Global Ocean Sampling database contains half as many 4-hydroxybutyryl-CoA dehydratase sequences as compared with those found for another key photosynthetic CO2-fixing enzyme, ribulose-1,5-bisphosphate carboxylase-oxygenase. This indicates the importance of this enzyme in global carbon cycling.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Berg, Ivan A -- Kockelkorn, Daniel -- Buckel, Wolfgang -- Fuchs, Georg -- New York, N.Y. -- Science. 2007 Dec 14;318(5857):1782-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Mikrobiologie, Fakultat Biologie, Universitat Freiburg, Schanzlestrasse 1, D-79104 Freiburg, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18079405" target="_blank"〉PubMed〈/a〉
    Keywords: Acetyl Coenzyme A/metabolism ; Acetyl-CoA Carboxylase/metabolism ; Acyl Coenzyme A/metabolism ; Amino Acid Sequence ; Anaerobiosis ; Archaea/genetics/metabolism ; Autotrophic Processes ; Bicarbonates/metabolism ; Carbon Dioxide/*metabolism ; Genes, Archaeal ; Hydro-Lyases/genetics/metabolism ; Hydroxybutyrates/*metabolism ; Kinetics ; Lactic Acid/*analogs & derivatives/metabolism ; Metabolic Networks and Pathways ; Molecular Sequence Data ; Oxidation-Reduction ; Photosynthesis ; Phylogeny ; Sulfolobaceae/genetics/*metabolism
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 50
    facet.materialart.
    Unknown
    Ocean science. Highly active eddies (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2007-05-19
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Michaels, Anthony F -- New York, N.Y. -- Science. 2007 May 18;316(5827):992-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biological Sciences, University of Southern California, Los Angeles, CA 90089, USA. tony@usc.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17510353" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Ecosystem ; Geologic Sediments ; Oceanography ; Oceans and Seas ; Oxygen/analysis ; Photosynthesis ; Plankton/*growth & development/physiology ; *Seawater/chemistry ; Silicon Dioxide/analysis ; *Water Movements
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 51
    facet.materialart.
    Unknown
    Legumes symbioses: absence of Nod genes in photosynthetic bradyrhizobia (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2007-06-02
    Description: Leguminous plants (such as peas and soybeans) and rhizobial soil bacteria are symbiotic partners that communicate through molecular signaling pathways, resulting in the formation of nodules on legume roots and occasionally stems that house nitrogen-fixing bacteria. Nodule formation has been assumed to be exclusively initiated by the binding of bacterial, host-specific lipochito-oligosaccharidic Nod factors, encoded by the nodABC genes, to kinase-like receptors of the plant. Here we show by complete genome sequencing of two symbiotic, photosynthetic, Bradyrhizobium strains, BTAi1 and ORS278, that canonical nodABC genes and typical lipochito-oligosaccharidic Nod factors are not required for symbiosis in some legumes. Mutational analyses indicated that these unique rhizobia use an alternative pathway to initiate symbioses, where a purine derivative may play a key role in triggering nodule formation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Giraud, Eric -- Moulin, Lionel -- Vallenet, David -- Barbe, Valerie -- Cytryn, Eddie -- Avarre, Jean-Christophe -- Jaubert, Marianne -- Simon, Damien -- Cartieaux, Fabienne -- Prin, Yves -- Bena, Gilles -- Hannibal, Laure -- Fardoux, Joel -- Kojadinovic, Mila -- Vuillet, Laurie -- Lajus, Aurelie -- Cruveiller, Stephane -- Rouy, Zoe -- Mangenot, Sophie -- Segurens, Beatrice -- Dossat, Carole -- Franck, William L -- Chang, Woo-Suk -- Saunders, Elizabeth -- Bruce, David -- Richardson, Paul -- Normand, Philippe -- Dreyfus, Bernard -- Pignol, David -- Stacey, Gary -- Emerich, David -- Vermeglio, Andre -- Medigue, Claudine -- Sadowsky, Michael -- New York, N.Y. -- Science. 2007 Jun 1;316(5829):1307-12.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institut de Recherche pour le Developpement, Centre de Cooperation International en Recherche Agronomique pour le Developpement, Institut National de la Recherche Agronomique, Universite Montpellier 2, France. giraud@mpl.ird.fr〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17540897" target="_blank"〉PubMed〈/a〉
    Keywords: Acyltransferases/genetics/metabolism ; Amidohydrolases/genetics/metabolism ; Bacterial Proteins/genetics/metabolism ; Bradyrhizobium/*genetics/growth & development/*physiology ; Cytokinins/metabolism ; Fabaceae/*microbiology ; Genes, Bacterial ; Genome, Bacterial ; Genomics ; Lipopolysaccharides/metabolism ; Molecular Sequence Data ; Mutation ; N-Acetylglucosaminyltransferases/genetics/metabolism ; Photosynthesis ; Plant Roots/microbiology ; Plant Stems/*microbiology ; Purines/biosynthesis ; Root Nodules, Plant/microbiology/*physiology ; Signal Transduction ; *Symbiosis
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 52
    facet.materialart.
    Unknown
    The Calyptogena magnifica chemoautotrophic symbiont genome (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2007-02-17
    Description: Chemoautotrophic endosymbionts are the metabolic cornerstone of hydrothermal vent communities, providing invertebrate hosts with nearly all of their nutrition. The Calyptogena magnifica (Bivalvia: Vesicomyidae) symbiont, Candidatus Ruthia magnifica, is the first intracellular sulfur-oxidizing endosymbiont to have its genome sequenced, revealing a suite of metabolic capabilities. The genome encodes major chemoautotrophic pathways as well as pathways for biosynthesis of vitamins, cofactors, and all 20 amino acids required by the clam.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Newton, I L G -- Woyke, T -- Auchtung, T A -- Dilly, G F -- Dutton, R J -- Fisher, M C -- Fontanez, K M -- Lau, E -- Stewart, F J -- Richardson, P M -- Barry, K W -- Saunders, E -- Detter, J C -- Wu, D -- Eisen, J A -- Cavanaugh, C M -- New York, N.Y. -- Science. 2007 Feb 16;315(5814):998-1000.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Harvard University, 16 Divinity Avenue, Biolabs 4080, Cambridge, MA 02138, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17303757" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bivalvia/*microbiology ; Carbon/metabolism ; Chemoautotrophic Growth ; Gammaproteobacteria/*genetics/isolation & purification/metabolism/ultrastructure ; *Genome, Bacterial ; Molecular Sequence Data ; Photosynthesis ; *Symbiosis
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 53
    facet.materialart.
    Unknown
    Microbiology. A fifth pathway of carbon fixation (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2007-12-15
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Thauer, Rudolf K -- New York, N.Y. -- Science. 2007 Dec 14;318(5857):1732-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Max Planck Institute for Terrestrial Microbiology, 35043 Marburg, Germany. thauer@mpi-marburg.mpg.de〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18079388" target="_blank"〉PubMed〈/a〉
    Keywords: Anaerobiosis ; Archaea/genetics/metabolism ; *Autotrophic Processes ; Bacteria/genetics/metabolism ; Carbon Dioxide/*metabolism ; Gene Transfer, Horizontal ; Genes, Archaeal ; Hydrogen/metabolism ; Oxygen/metabolism ; Photosynthesis ; Sulfolobaceae/*metabolism
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 54
    facet.materialart.
    Unknown
    Plant science. Infectious heresy (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2007-06-02
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Downie, J Allan -- New York, N.Y. -- Science. 2007 Jun 1;316(5829):1296-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Microbiology, John Innes Centre, Norwich NR4 7UH, UK. allan.downie@bbsrc.ac.uk〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17540893" target="_blank"〉PubMed〈/a〉
    Keywords: Acyltransferases/genetics/metabolism ; Bacterial Proteins/genetics/metabolism ; Bradyrhizobium/genetics/growth & development/*physiology ; Cytokinins/metabolism ; Fabaceae/*microbiology ; Genes, Bacterial ; Mutation ; N-Acetylglucosaminyltransferases/genetics/metabolism ; *Nitrogen Fixation ; Photosynthesis ; Plant Roots/microbiology ; Plant Stems/microbiology ; Purines/biosynthesis ; Root Nodules, Plant/microbiology/*physiology ; Signal Transduction ; *Symbiosis
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 55
    facet.materialart.
    Unknown
    Ecology. Green with complexity (2008)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2008-02-16
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Naeem, Shahid -- New York, N.Y. -- Science. 2008 Feb 15;319(5865):913-4. doi: 10.1126/science.1154770.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Ecology, Evolution, and Environmental Biology, Columbia University, New York, NY 10027, USA. sn2121@columbia.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18276879" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Behavior, Animal ; Biodiversity ; *Ecosystem ; Feeding Behavior ; *Grasshoppers ; Photosynthesis ; *Plants/metabolism ; *Predatory Behavior ; *Spiders
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 56
    facet.materialart.
    Unknown
    Climate change. Ecosystem disturbance, carbon, and climate (2008)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2008-08-02
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Running, Steven W -- New York, N.Y. -- Science. 2008 Aug 1;321(5889):652-3. doi: 10.1126/science.1159607.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Numerical Terradynamic Simulation Group, College of Forestry, University of Montana, Missoula, MT 59812, USA. swr@ntsg.umt.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18669853" target="_blank"〉PubMed〈/a〉
    Keywords: Agriculture ; Animals ; Atmosphere ; *Carbon ; Carbon Dioxide ; *Climate ; Conservation of Natural Resources ; *Ecosystem ; Fires ; Greenhouse Effect ; Humans ; Insects ; *Models, Theoretical ; Photosynthesis ; Seasons ; Trees
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 57
    facet.materialart.
    Unknown
    Geology. The story of O2 (2008)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2008-10-25
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Falkowski, Paul G -- Isozaki, Yukio -- New York, N.Y. -- Science. 2008 Oct 24;322(5901):540-2. doi: 10.1126/science.1162641.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Earth and Planetary Sciences and Institute of Marine and Coastal Sciences, Rutgers University, 71 Dudley Road, New Brunswick, NJ 08901, USA. falko@imcs.rutgers.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18948530" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Atmosphere ; Carbon/analysis/metabolism ; Ecosystem ; *Evolution, Chemical ; Geologic Sediments/*chemistry ; Geological Phenomena ; Geology ; Oxidation-Reduction ; *Oxygen/chemistry/metabolism ; Oxygen Consumption ; Photosynthesis ; Photosystem II Protein Complex/metabolism ; Phytoplankton/metabolism ; Plants/metabolism ; Time ; Water/metabolism
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 58
    facet.materialart.
    Unknown
    Phytoplankton calcification in a high-CO2 world (2008)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2008-04-19
    Description: Ocean acidification in response to rising atmospheric CO2 partial pressures is widely expected to reduce calcification by marine organisms. From the mid-Mesozoic, coccolithophores have been major calcium carbonate producers in the world's oceans, today accounting for about a third of the total marine CaCO3 production. Here, we present laboratory evidence that calcification and net primary production in the coccolithophore species Emiliania huxleyi are significantly increased by high CO2 partial pressures. Field evidence from the deep ocean is consistent with these laboratory conclusions, indicating that over the past 220 years there has been a 40% increase in average coccolith mass. Our findings show that coccolithophores are already responding and will probably continue to respond to rising atmospheric CO2 partial pressures, which has important implications for biogeochemical modeling of future oceans and climate.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Iglesias-Rodriguez, M Debora -- Halloran, Paul R -- Rickaby, Rosalind E M -- Hall, Ian R -- Colmenero-Hidalgo, Elena -- Gittins, John R -- Green, Darryl R H -- Tyrrell, Toby -- Gibbs, Samantha J -- von Dassow, Peter -- Rehm, Eric -- Armbrust, E Virginia -- Boessenkool, Karin P -- New York, N.Y. -- Science. 2008 Apr 18;320(5874):336-40. doi: 10.1126/science.1154122.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉National Oceanography Centre, Southampton, University of Southampton Waterfront Campus, European Way, Southampton SO14 3ZH, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18420926" target="_blank"〉PubMed〈/a〉
    Keywords: Atmosphere ; *Calcification, Physiologic ; Calcium Carbonate/analysis ; *Carbon Dioxide ; Eukaryota/growth & development/*physiology ; Geologic Sediments/chemistry ; Hydrogen-Ion Concentration ; Oceans and Seas ; Photosynthesis ; Phytoplankton/growth & development/*physiology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 59
    facet.materialart.
    Unknown
    The circadian clock in Arabidopsis roots is a simplified slave version of the clock in shoots (2008)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2008-12-20
    Description: The circadian oscillator in eukaryotes consists of several interlocking feedback loops through which the expression of clock genes is controlled. It is generally assumed that all plant cells contain essentially identical and cell-autonomous multiloop clocks. Here, we show that the circadian clock in the roots of mature Arabidopsis plants differs markedly from that in the shoots and that the root clock is synchronized by a photosynthesis-related signal from the shoot. Two of the feedback loops of the plant circadian clock are disengaged in roots, because two key clock components, the transcription factors CCA1 and LHY, are able to inhibit gene expression in shoots but not in roots. Thus, the plant clock is organ-specific but not organ-autonomous.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉James, Allan B -- Monreal, Jose A -- Nimmo, Gillian A -- Kelly, Ciaran L -- Herzyk, Pawel -- Jenkins, Gareth I -- Nimmo, Hugh G -- New York, N.Y. -- Science. 2008 Dec 19;322(5909):1832-5. doi: 10.1126/science.1161403.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Molecular and Cellular Biology, Faculty of Biomedical and Life Sciences, University of Glasgow, Glasgow G12 8QQ, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19095940" target="_blank"〉PubMed〈/a〉
    Keywords: Arabidopsis/genetics/*physiology ; Arabidopsis Proteins/genetics/*physiology ; *Biological Clocks/genetics ; *Circadian Rhythm/genetics ; DNA-Binding Proteins/genetics/physiology ; Darkness ; Diuron/pharmacology ; Feedback, Physiological ; *Gene Expression Regulation, Plant/drug effects ; Genes, Plant ; Light ; Oligonucleotide Array Sequence Analysis ; Photosynthesis ; Plant Roots/genetics/*physiology ; Plant Shoots/genetics/physiology ; Promoter Regions, Genetic ; Transcription Factors/genetics/physiology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 60
    facet.materialart.
    Unknown
    Globally distributed uncultivated oceanic N2-fixing cyanobacteria lack oxygenic photosystem II (2008)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2008-11-15
    Description: Biological nitrogen (N2) fixation is important in controlling biological productivity and carbon flux in the oceans. Unicellular N2-fixing cyanobacteria have only recently been discovered and are widely distributed in tropical and subtropical seas. Metagenomic analysis of flow cytometry-sorted cells shows that unicellular N2-fixing cyanobacteria in "group A" (UCYN-A) lack genes for the oxygen-evolving photosystem II and for carbon fixation, which has implications for oceanic carbon and nitrogen cycling and raises questions regarding the evolution of photosynthesis and N2 fixation on Earth.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zehr, Jonathan P -- Bench, Shellie R -- Carter, Brandon J -- Hewson, Ian -- Niazi, Faheem -- Shi, Tuo -- Tripp, H James -- Affourtit, Jason P -- New York, N.Y. -- Science. 2008 Nov 14;322(5904):1110-2. doi: 10.1126/science.1165340.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Ocean Sciences Department, University of California, Santa Cruz, 1156 High Street, Santa Cruz, CA 95064, USA. zehrj@ucsc.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19008448" target="_blank"〉PubMed〈/a〉
    Keywords: Cyanobacteria/cytology/*genetics/isolation & purification/*metabolism ; Evolution, Molecular ; Flow Cytometry ; Genes, Bacterial ; Genes, rRNA ; Genome, Bacterial ; Genomics/methods ; Molecular Sequence Data ; Nitrogen Fixation/*genetics ; Oxidoreductases/genetics ; Pacific Ocean ; Photosynthesis ; Photosystem II Protein Complex/*genetics/metabolism ; Phylogeny ; Seawater/*microbiology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 61
    facet.materialart.
    Unknown
    Comment on "Phytoplankton calcification in a high-CO2 world" (2008)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2008-12-06
    Description: Iglesias-Rodriguez et al. (Research Articles, 18 April 2008, p. 336) reported that the coccolithophore Emiliania huxleyi doubles its organic matter production and calcification in response to high carbon dioxide partial pressures, contrary to previous laboratory and field studies. We argue that shortcomings in their experimental protocol compromise the interpretation of their data and the resulting conclusions.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Riebesell, Ulf -- Bellerby, Richard G J -- Engel, Anja -- Fabry, Victoria J -- Hutchins, David A -- Reusch, Thorsten B H -- Schulz, Kai G -- Morel, Francois M M -- New York, N.Y. -- Science. 2008 Dec 5;322(5907):1466; author reply 1466. doi: 10.1126/science.1161096.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Leibniz Institute of Marine Sciences, IFM-GEOMAR, D-24105 Kiel, Germany. uriebesell@ifm-geomar.de〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19056960" target="_blank"〉PubMed〈/a〉
    Keywords: Atmosphere ; *Calcification, Physiologic ; *Carbon Dioxide ; Hydrogen-Ion Concentration ; Oceans and Seas ; Photosynthesis ; Phytoplankton/growth & development/*physiology ; Research Design
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 62
    facet.materialart.
    Unknown
    Oxygen-18 of O2 records the impact of abrupt climate change on the terrestrial biosphere (2009)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2009-06-13
    Description: Photosynthesis and respiration occur widely on Earth's surface, and the 18O/16O ratio of the oxygen produced and consumed varies with climatic conditions. As a consequence, the history of climate is reflected in the deviation of the 18O/16O of air (delta18Oatm) from seawater delta18O (known as the Dole effect). We report variations in delta18Oatm over the past 60,000 years related to Heinrich and Dansgaard-Oeschger events, two modes of abrupt climate change observed during the last ice age. Correlations with cave records support the hypothesis that the Dole effect is primarily governed by the strength of the Asian and North African monsoons and confirm that widespread changes in low-latitude terrestrial rainfall accompanied abrupt climate change. The rapid delta18Oatm changes can also be used to synchronize ice records by providing global time markers.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Severinghaus, Jeffrey P -- Beaudette, Ross -- Headly, Melissa A -- Taylor, Kendrick -- Brook, Edward J -- New York, N.Y. -- Science. 2009 Jun 12;324(5933):1431-4. doi: 10.1126/science.1169473.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Scripps Institution of Oceanography, University of California, San Diego, CA 92093-0244, USA. jseveringhaus@ucsd.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19520957" target="_blank"〉PubMed〈/a〉
    Keywords: Antarctic Regions ; Atmosphere/*chemistry ; *Climatic Processes ; *Ecosystem ; Ice Cover/*chemistry ; Oxygen/*analysis ; Oxygen Isotopes/*analysis ; Photosynthesis ; Rain ; Seawater/chemistry ; Time
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 63
    facet.materialart.
    Unknown
    Plant science. An invasive plant paradox (2009)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2009-05-09
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rout, Marnie E -- Callaway, Ragan M -- New York, N.Y. -- Science. 2009 May 8;324(5928):734-5. doi: 10.1126/science.1173651.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Biological Sciences, University of Montana, Missoula, MT 59812, USA. marnie.rout@mso.umt.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19423809" target="_blank"〉PubMed〈/a〉
    Keywords: *Bacterial Physiological Phenomena ; Biodiversity ; *Ecosystem ; Nitrogen/analysis/metabolism ; Photosynthesis ; *Plant Development ; Plant Leaves/anatomy & histology/chemistry ; Plants/anatomy & histology/metabolism ; *Soil/analysis ; *Soil Microbiology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 64
    facet.materialart.
    Unknown
    Microbiology. Getting in touch with your friends (2009)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2009-05-30
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Marx, Christopher J -- New York, N.Y. -- Science. 2009 May 29;324(5931):1150-1. doi: 10.1126/science.1173088.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Organismic and Evolutionary Biology, Harvard University, Cambridge, MA 02138, USA. cmarx@oeb.harvard.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19478170" target="_blank"〉PubMed〈/a〉
    Keywords: *Bacterial Physiological Phenomena ; Flagella/physiology ; Hydrogen/metabolism ; Methanobacteriaceae/*physiology ; *Microbiological Processes ; Movement ; Photosynthesis ; *Symbiosis
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 65
    facet.materialart.
    Unknown
    Rapid resurgence of marine productivity after the Cretaceous-Paleogene mass extinction (2009)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2009-10-03
    Description: The course of the biotic recovery after the impact-related disruption of photosynthesis and mass extinction event at the Cretaceous-Paleogene boundary has been intensely debated. The resurgence of marine primary production in the aftermath remains poorly constrained because of the paucity of fossil records tracing primary producers that lack skeletons. Here we present a high-resolution record of geochemical variation in the remarkably thick Fiskeler (also known as the Fish Clay) boundary layer at Kulstirenden, Denmark. Converging evidence from the stable isotopes of carbon and nitrogen and abundances of algal steranes and bacterial hopanes indicates that algal primary productivity was strongly reduced for only a brief period of possibly less than a century after the impact, followed by a rapid resurgence of carbon fixation and ecological reorganization.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sepulveda, Julio -- Wendler, Jens E -- Summons, Roger E -- Hinrichs, Kai-Uwe -- New York, N.Y. -- Science. 2009 Oct 2;326(5949):129-32. doi: 10.1126/science.1176233.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Organic Geochemistry Group, Department of Geosciences, and Center for Marine Environmental Sciences (MARUM), University of Bremen, 28334 Bremen, Germany. juliosep@mit.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19797658" target="_blank"〉PubMed〈/a〉
    Keywords: Biomarkers/analysis ; Carbon Isotopes ; Cyanobacteria/physiology ; Denmark ; *Ecosystem ; Eukaryota/*physiology ; *Extinction, Biological ; Geologic Sediments ; Nitrogen Isotopes ; Photosynthesis ; Phytoplankton/physiology ; Polycyclic Compounds/analysis ; Seawater/chemistry/*microbiology ; Time ; Triterpenes/analysis
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 66
    facet.materialart.
    Unknown
    Contribution of semi-arid forests to the climate system (2010)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2010-01-23
    Description: Forests both take up CO2 and enhance absorption of solar radiation, with contrasting effects on global temperature. Based on a 9-year study in the forests' dry timberline, we show that substantial carbon sequestration (cooling effect) is maintained in the large dry transition zone (precipitation from 200 to 600 millimeters) by shifts in peak photosynthetic activities from summer to early spring, and this is counteracted by longwave radiation (L) suppression (warming effect), doubling the forestation shortwave (S) albedo effect. Several decades of carbon accumulation are required to balance the twofold S + L effect. Desertification over the past several decades, however, contributed negative forcing at Earth's surface equivalent to approximately 20% of the global anthropogenic CO2 effect over the same period, moderating warming trends.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rotenberg, Eyal -- Yakir, Dan -- New York, N.Y. -- Science. 2010 Jan 22;327(5964):451-4. doi: 10.1126/science.1179998.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Environmental Sciences and Energy Research, Weizmann Institute of Science, Rehovot 76100, Israel.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20093470" target="_blank"〉PubMed〈/a〉
    Keywords: Carbon/*metabolism ; Carbon Dioxide/metabolism ; *Climatic Processes ; Conservation of Natural Resources ; *Ecosystem ; Geography ; Israel ; Photosynthesis ; Seasons ; Temperature ; *Trees/growth & development/metabolism
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 67
    facet.materialart.
    Unknown
    Oceans. Iron and the carbon pump (2010)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2010-02-06
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sunda, William G -- New York, N.Y. -- Science. 2010 Feb 5;327(5966):654-5. doi: 10.1126/science.1186151.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Beaufort Laboratory, National Ocean Service, National Oceanic and Atmospheric Administration, 101 Pivers Island Road, Beaufort, NC 28516, USA. bill.sunda@noaa.gov〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20133563" target="_blank"〉PubMed〈/a〉
    Keywords: Atmosphere ; Carbon/*metabolism ; *Carbon Dioxide/analysis/metabolism ; Ferric Compounds/chemistry/*metabolism ; Hydrogen-Ion Concentration ; Iron/analysis/chemistry ; Ligands ; Nitrogen Fixation ; Oceans and Seas ; Oxidation-Reduction ; Photosynthesis ; Physicochemical Processes ; Phytoplankton/*metabolism ; Seawater/*chemistry
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 68
    facet.materialart.
    Unknown
    Climate. Drylands in the Earth system (2010)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2010-01-23
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Schimel, David S -- New York, N.Y. -- Science. 2010 Jan 22;327(5964):418-9. doi: 10.1126/science.1184946.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉National Ecological Observatory, Inc., 5340 Airport Boulevard, Boulder, CO 80301, USA. dschimel@naeoninc.org〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20093461" target="_blank"〉PubMed〈/a〉
    Keywords: Carbon/*metabolism ; Climate Change ; *Climatic Processes ; Conservation of Natural Resources ; *Ecosystem ; Geography ; Israel ; Photosynthesis ; Seasons ; Temperature ; *Trees/growth & development/metabolism
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 69
    facet.materialart.
    Unknown
    Carbon dioxide enrichment inhibits nitrate assimilation in wheat and Arabidopsis (2010)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2010-05-15
    Description: The concentration of carbon dioxide in Earth's atmosphere may double by the end of the 21st century. The response of higher plants to a carbon dioxide doubling often includes a decline in their nitrogen status, but the reasons for this decline have been uncertain. We used five independent methods with wheat and Arabidopsis to show that atmospheric carbon dioxide enrichment inhibited the assimilation of nitrate into organic nitrogen compounds. This inhibition may be largely responsible for carbon dioxide acclimation, the decrease in photosynthesis and growth of plants conducting C(3) carbon fixation after long exposures (days to years) to carbon dioxide enrichment. These results suggest that the relative availability of soil ammonium and nitrate to most plants will become increasingly important in determining their productivity as well as their quality as food.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bloom, Arnold J -- Burger, Martin -- Rubio Asensio, Jose Salvador -- Cousins, Asaph B -- New York, N.Y. -- Science. 2010 May 14;328(5980):899-903. doi: 10.1126/science.1186440.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Plant Sciences, University of California at Davis, Davis, CA 95616, USA. ajbloom@ucdavis.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20466933" target="_blank"〉PubMed〈/a〉
    Keywords: Absorption ; Acclimatization ; Arabidopsis/growth & development/*metabolism ; Atmosphere ; *Carbon Dioxide ; Nitrate Reductase/metabolism ; Nitrates/*metabolism ; Nitrogen Compounds/metabolism ; Oxygen ; Photosynthesis ; Plant Shoots/growth & development/metabolism ; Quaternary Ammonium Compounds/metabolism ; Soil/analysis ; Triticum/growth & development/*metabolism
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 70
    facet.materialart.
    Unknown
    The growing human footprint on coastal and open-ocean biogeochemistry (2010)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2010-06-19
    Description: Climate change, rising atmospheric carbon dioxide, excess nutrient inputs, and pollution in its many forms are fundamentally altering the chemistry of the ocean, often on a global scale and, in some cases, at rates greatly exceeding those in the historical and recent geological record. Major observed trends include a shift in the acid-base chemistry of seawater, reduced subsurface oxygen both in near-shore coastal water and in the open ocean, rising coastal nitrogen levels, and widespread increase in mercury and persistent organic pollutants. Most of these perturbations, tied either directly or indirectly to human fossil fuel combustion, fertilizer use, and industrial activity, are projected to grow in coming decades, resulting in increasing negative impacts on ocean biota and marine resources.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Doney, Scott C -- New York, N.Y. -- Science. 2010 Jun 18;328(5985):1512-6. doi: 10.1126/science.1185198.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Marine Chemistry and Geochemistry Department, Woods Hole Oceanographic Institution, Woods Hole, MA 02543, USA. sdoney@whoi.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20558706" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Atmosphere ; Carbon Dioxide/analysis ; Climate Change ; *Ecosystem ; Fossil Fuels ; *Human Activities ; Humans ; Hydrogen-Ion Concentration ; Industrial Waste/analysis ; Mercury/analysis ; Nitrogen/analysis ; Oceans and Seas ; Oxygen/analysis ; Photosynthesis ; *Seawater/chemistry/microbiology ; Water Pollutants/analysis
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 71
    facet.materialart.
    Unknown
    Effect of ocean acidification on iron availability to marine phytoplankton (2010)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2010-01-16
    Description: The acidification caused by the dissolution of anthropogenic carbon dioxide (CO2) in the ocean changes the chemistry and hence the bioavailability of iron (Fe), a limiting nutrient in large oceanic regions. Here, we show that the bioavailability of dissolved Fe may decline because of ocean acidification. Acidification of media containing various Fe compounds decreases the Fe uptake rate of diatoms and coccolithophores to an extent predicted by the changes in Fe chemistry. A slower Fe uptake by a model diatom with decreasing pH is also seen in experiments with Atlantic surface water. The Fe requirement of model phytoplankton remains unchanged with increasing CO2. The ongoing acidification of seawater is likely to increase the Fe stress of phytoplankton populations in some areas of the ocean.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Shi, Dalin -- Xu, Yan -- Hopkinson, Brian M -- Morel, Francois M M -- New York, N.Y. -- Science. 2010 Feb 5;327(5966):676-9. doi: 10.1126/science.1183517. Epub 2010 Jan 14.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Geosciences, Princeton University, Princeton, NJ 08544, USA. dshi@princeton.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20075213" target="_blank"〉PubMed〈/a〉
    Keywords: Atlantic Ocean ; Atmosphere ; *Carbon Dioxide/metabolism ; Diatoms/*metabolism ; Edetic Acid/chemistry ; Ferric Compounds/chemistry/*metabolism ; Hydrogen-Ion Concentration ; Iron/chemistry ; Iron Chelating Agents/chemistry ; Ligands ; Lysine/analogs & derivatives/chemistry ; Oceans and Seas ; Photosynthesis ; Phytoplankton/*metabolism ; Seawater/*chemistry ; Siderophores/chemistry
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 72
    facet.materialart.
    Unknown
    A red-shifted chlorophyll (2010)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2010-08-21
    Description: Chlorophylls are essential for light-harvesting and energy transduction in photosynthesis. Four chemically distinct varieties have been known for the past 60 years. Here we report isolation of a fifth, which we designate chlorophyll f. Its in vitro absorption (706 nanometers) and fluorescence (722 nanometers) maxima are red-shifted compared to all other chlorophylls from oxygenic phototrophs. On the basis of the optical, mass, and nuclear magnetic resonance spectra, we propose that chlorophyll f is [2-formyl]-chlorophyll a (C55H70O6N4Mg). This finding suggests that oxygenic photosynthesis can be extended further into the infrared region and may open associated bioenergy applications.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chen, Min -- Schliep, Martin -- Willows, Robert D -- Cai, Zheng-Li -- Neilan, Brett A -- Scheer, Hugo -- New York, N.Y. -- Science. 2010 Sep 10;329(5997):1318-9. doi: 10.1126/science.1191127. Epub 2010 Aug 19.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉School of Biological Sciences, University of Sydney, NSW 2006, Australia. min.chen@sydney.edu.au〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20724585" target="_blank"〉PubMed〈/a〉
    Keywords: Bacteriochlorophylls/*chemistry/*isolation & purification ; Cyanobacteria/*chemistry/classification/genetics/isolation & purification ; Genes, Bacterial ; Genes, rRNA ; Mass Spectrometry ; Molecular Sequence Data ; Molecular Structure ; Nuclear Magnetic Resonance, Biomolecular ; Photosynthesis ; Pigments, Biological/*chemistry/*isolation & purification ; RNA, Ribosomal, 16S/genetics ; Spectrometry, Fluorescence ; Western Australia
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 73
    facet.materialart.
    Unknown
    Faster interprotein electron transfer in a [myoglobin, b(5)] complex with a redesigned interface (2010)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2010-11-26
    Description: Direct measurements of electron transfer (ET) within a protein-protein complex with a redesigned interface formed by physiological partner proteins myoglobin (Mb) and cytochrome b(5) (b(5)) reveal interprotein ET rates comparable to those observed within the photosynthetic reaction center. Brownian dynamics simulations show that Mb in which three surface acid residues are mutated to lysine binds b(5) in an ensemble of configurations distributed around a reactive most-probable structure. Correspondingly, charge-separation ET from a photoexcited singlet zinc porphyrin incorporated within Mb to the heme of b(5) and the follow-up charge-recombination exhibit distributed kinetics, with median rate constants, k(f)(s) = 2.1 x 10(9) second(-1) and k(b)(s) = 4.3 x 10(10) second(-1), respectively. The latter approaches that for the initial step in photosynthetic charge separation, k = 3.3 x 10(11) second(-1).〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4251596/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4251596/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Xiong, Peng -- Nocek, Judith M -- Vura-Weis, Josh -- Lockard, Jenny V -- Wasielewski, Michael R -- Hoffman, Brian M -- HL063203/HL/NHLBI NIH HHS/ -- R01 HL063203/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 2010 Nov 19;330(6007):1075-8. doi: 10.1126/science.1197054.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208-3113, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21097931" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cattle ; Cytochromes b5/*chemistry ; *Electrons ; Horses ; Multiprotein Complexes/chemistry ; Myoglobin/*chemistry ; Photosynthesis ; Time
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 74
    facet.materialart.
    Unknown
    Ionic liquid-mediated selective conversion of CO(2) to CO at low overpotentials (2011)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2011-10-01
    Description: Electroreduction of carbon dioxide (CO(2))--a key component of artificial photosynthesis--has largely been stymied by the impractically high overpotentials necessary to drive the process. We report an electrocatalytic system that reduces CO(2) to carbon monoxide (CO) at overpotentials below 0.2 volt. The system relies on an ionic liquid electrolyte to lower the energy of the (CO(2))(-) intermediate, most likely by complexation, and thereby lower the initial reduction barrier. The silver cathode then catalyzes formation of the final products. Formation of gaseous CO is first observed at an applied voltage of 1.5 volts, just slightly above the minimum (i.e., equilibrium) voltage of 1.33 volts. The system continued producing CO for at least 7 hours at Faradaic efficiencies greater than 96%.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rosen, Brian A -- Salehi-Khojin, Amin -- Thorson, Michael R -- Zhu, Wei -- Whipple, Devin T -- Kenis, Paul J A -- Masel, Richard I -- New York, N.Y. -- Science. 2011 Nov 4;334(6056):643-4. doi: 10.1126/science.1209786. Epub 2011 Sep 29.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Dioxide Materials, 60 Hazelwood Drive, Champaign, IL 61820, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21960532" target="_blank"〉PubMed〈/a〉
    Keywords: Carbon Dioxide/*chemistry ; Carbon Monoxide/chemistry ; Catalysis ; Electrochemistry ; Imidazoles/chemistry ; Imides/chemistry ; Photosynthesis
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 75
    facet.materialart.
    Unknown
    Predators' effects on ecosystem entropy (2011)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2011-08-27
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Flueck, Werner T -- New York, N.Y. -- Science. 2011 Aug 26;333(6046):1092-3. doi: 10.1126/science.333.6046.1092-b.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21868651" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Ecosystem ; Entropy ; *Food Chain ; Photosynthesis ; Predatory Behavior ; Temperature
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 76
    facet.materialart.
    Unknown
    Comment on "Drought-induced reduction in global terrestrial net primary production from 2000 through 2009" (2011)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2011-08-27
    Description: Zhao and Running (Reports, 20 August 2010, p. 940) reported a reduction in global terrestrial net primary production (NPP) from 2000 through 2009. We argue that the small trends, regional patterns, and interannual variations that they describe are artifacts of their NPP model. Satellite observations of vegetation activity show no statistically significant changes in more than 85% of the vegetated lands south of 70 degrees N during the same 2000 to 2009 period.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Samanta, Arindam -- Costa, Marcos H -- Nunes, Edson L -- Vieira, Simone A -- Xu, Liang -- Myneni, Ranga B -- New York, N.Y. -- Science. 2011 Aug 26;333(6046):1093; author reply 1093. doi: 10.1126/science.1199048.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Geography and Environment, Boston University, Boston, MA 02215, USA. arindam.sam@gmail.com〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21868655" target="_blank"〉PubMed〈/a〉
    Keywords: Atmosphere ; Biomass ; *Carbon Cycle ; Carbon Dioxide ; *Droughts ; *Ecosystem ; Photosynthesis ; Plants/*metabolism ; South America
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 77
    facet.materialart.
    Unknown
    Quantum coherent energy transfer over varying pathways in single light-harvesting complexes (2013)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2013-06-22
    Description: The initial steps of photosynthesis comprise the absorption of sunlight by pigment-protein antenna complexes followed by rapid and highly efficient funneling of excitation energy to a reaction center. In these transport processes, signatures of unexpectedly long-lived coherences have emerged in two-dimensional ensemble spectra of various light-harvesting complexes. Here, we demonstrate ultrafast quantum coherent energy transfer within individual antenna complexes of a purple bacterium under physiological conditions. We find that quantum coherences between electronically coupled energy eigenstates persist at least 400 femtoseconds and that distinct energy-transfer pathways that change with time can be identified in each complex. Our data suggest that long-lived quantum coherence renders energy transfer in photosynthetic systems robust in the presence of disorder, which is a prerequisite for efficient light harvesting.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hildner, Richard -- Brinks, Daan -- Nieder, Jana B -- Cogdell, Richard J -- van Hulst, Niek F -- New York, N.Y. -- Science. 2013 Jun 21;340(6139):1448-51. doi: 10.1126/science.1235820.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉ICFO-Institut de Ciencies Fotoniques, Mediterranean Technology Park, Castelldefels, Barcelona, Spain.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/23788794" target="_blank"〉PubMed〈/a〉
    Keywords: Bacterial Proteins/*chemistry ; Bacteriochlorophyll A/*chemistry ; *Energy Transfer ; Fourier Analysis ; Light ; Light-Harvesting Protein Complexes/*chemistry ; Photosynthesis ; Quantum Theory ; Rhodopseudomonas/*chemistry ; Temperature
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 78
    facet.materialart.
    Unknown
    Photosynthesis. Electronic structure of the oxygen-evolving complex in photosystem II prior to O-O bond formation (2014)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2014-08-16
    Description: The photosynthetic protein complex photosystem II oxidizes water to molecular oxygen at an embedded tetramanganese-calcium cluster. Resolving the geometric and electronic structure of this cluster in its highest metastable catalytic state (designated S3) is a prerequisite for understanding the mechanism of O-O bond formation. Here, multifrequency, multidimensional magnetic resonance spectroscopy reveals that all four manganese ions of the catalyst are structurally and electronically similar immediately before the final oxygen evolution step; they all exhibit a 4+ formal oxidation state and octahedral local geometry. Only one structural model derived from quantum chemical modeling is consistent with all magnetic resonance data; its formation requires the binding of an additional water molecule. O-O bond formation would then proceed by the coupling of two proximal manganese-bound oxygens in the transition state of the cofactor.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cox, Nicholas -- Retegan, Marius -- Neese, Frank -- Pantazis, Dimitrios A -- Boussac, Alain -- Lubitz, Wolfgang -- New York, N.Y. -- Science. 2014 Aug 15;345(6198):804-8. doi: 10.1126/science.1254910. Epub 2014 Aug 14.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Max Planck Institute for Chemical Energy Conversion, Stiftstrasse 34-36, D-45470 Mulheim an der Ruhr, Germany. nicholas.cox@cec.mpg.de wolfgang.lubitz@cec.mpg.de. ; Max Planck Institute for Chemical Energy Conversion, Stiftstrasse 34-36, D-45470 Mulheim an der Ruhr, Germany. ; Institut de Biologie et de Technologies de Saclay, CNRS UMR 8221, Commissariat a l'Energie Atomique (CEA) Saclay, 91191 Gif-sur-Yvette, France.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25124437" target="_blank"〉PubMed〈/a〉
    Keywords: Bacterial Proteins/*chemistry/metabolism ; Cyanobacteria/*chemistry/metabolism ; Electron Spin Resonance Spectroscopy ; Magnetic Resonance Spectroscopy ; Manganese/chemistry ; Models, Chemical ; Oxidation-Reduction ; Oxygen/*chemistry/metabolism ; Photosynthesis ; Photosystem II Protein Complex/*chemistry/metabolism ; Physicochemical Processes ; Water/chemistry
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 79
    facet.materialart.
    Unknown
    Remote sensing. Carbon-mapping satellite will monitor plants' faint glow (2014)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2014-06-14
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hand, Eric -- New York, N.Y. -- Science. 2014 Jun 13;344(6189):1211-2. doi: 10.1126/science.344.6189.1211.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24925993" target="_blank"〉PubMed〈/a〉
    Keywords: Carbon/*metabolism ; Carbon Dioxide/*metabolism ; Chlorophyll/analysis/*metabolism ; Climate Change ; Crops, Agricultural/*metabolism ; *Fluorescence ; Luminescent Measurements/*methods ; Photosynthesis ; Rain ; Satellite Imagery/*methods ; Spacecraft ; Trees/metabolism
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 80
    facet.materialart.
    Unknown
    Perennial Antarctic lake ice: an oasis for life in a polar desert (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-06-26
    Description: The permanent ice covers of Antarctic lakes in the McMurdo Dry Valleys develop liquid water inclusions in response to solar heating of internal aeolian-derived sediments. The ice sediment particles serve as nutrient (inorganic and organic)-enriched microzones for the establishment of a physiologically and ecologically complex microbial consortium capable of contemporaneous photosynthesis, nitrogen fixation, and decomposition. The consortium is capable of physically and chemically establishing and modifying a relatively nutrient- and organic matter-enriched microbial "oasis" embedded in the lake ice cover.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Priscu, J C -- Fritsen, C H -- Adams, E E -- Giovannoni, S J -- Paerl, H W -- McKay, C P -- Doran, P T -- Gordon, D A -- Lanoil, B D -- Pinckney, J L -- New York, N.Y. -- Science. 1998 Jun 26;280(5372):2095-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biological Sciences, Montana State University, Bozeman, MT 59717, USA. 59717, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9641910" target="_blank"〉PubMed〈/a〉
    Keywords: Antarctic Regions ; Bacteria/*growth & development/metabolism ; Carbon/metabolism ; Carbon Dioxide/metabolism ; Cyanobacteria/genetics/growth & development/metabolism ; *Ecosystem ; Exobiology ; Geologic Sediments/*microbiology ; *Ice ; Jupiter ; Mars ; Nitrogen Fixation ; Photosynthesis ; Phylogeny ; RNA, Bacterial/genetics ; RNA, Ribosomal, 16S/genetics ; *Water Microbiology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 81
    facet.materialart.
    Unknown
    Global warming. Rain might be leading carbon sink factor (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-06-08
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lovett, Richard A -- New York, N.Y. -- Science. 2002 Jun 7;296(5574):1787.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12052933" target="_blank"〉PubMed〈/a〉
    Keywords: Atmosphere ; *Carbon Dioxide/metabolism ; Computer Simulation ; *Greenhouse Effect ; Photosynthesis ; *Plant Development ; Plants/metabolism ; *Rain ; Temperature ; Trees/growth & development/metabolism ; United States
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 82
    facet.materialart.
    Unknown
    Rapid regulation of light harvesting and plant fitness in the field (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-07-06
    Description: We used Arabidopsis thaliana mutants to examine how a photosynthetic regulatory process, the qE-type or DeltapH-dependent nonphotochemical quenching, hereafter named feedback de-excitation, influences plant fitness in different light environments. We show that the feedback de-excitation is important for plant fitness in the field and in fluctuating light in a controlled environment but that it does not affect plant performance under constant light conditions. Our findings demonstrate that the feedback de-excitation confers a strong fitness advantage under field conditions and suggest that this advantage is due to the increase in plant tolerance to variation in light intensity rather than tolerance to high-intensity light itself.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kulheim, Carsten -- Agren, Jon -- Jansson, Stefan -- New York, N.Y. -- Science. 2002 Jul 5;297(5578):91-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Umea Plant Science Center, Department of Plant Physiology, Umea University, SE-901 87 Umea, Sweden.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12098696" target="_blank"〉PubMed〈/a〉
    Keywords: Adaptation, Physiological ; Arabidopsis/genetics/growth & development/*physiology ; Arabidopsis Proteins/genetics/metabolism ; Electron Transport ; *Feedback, Physiological ; Genotype ; Hydrogen-Ion Concentration ; *Light ; Light-Harvesting Protein Complexes ; Mutation ; Oxidoreductases/genetics/*metabolism ; Photosynthesis ; Photosynthetic Reaction Center Complex Proteins/genetics/*metabolism ; *Photosystem II Protein Complex ; *Plant Proteins ; Temperature
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 83
    facet.materialart.
    Unknown
    Climate change. Will ocean fertilization work? (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2003-04-05
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Buesseler, Ken O -- Boyd, Philip W -- New York, N.Y. -- Science. 2003 Apr 4;300(5616):67-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Woods Hole Oceanographic Institution, Woods Hole, MA 02543, USA. kbuesseler@whoi.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12677048" target="_blank"〉PubMed〈/a〉
    Keywords: Atmosphere ; *Biomass ; *Carbon Dioxide/metabolism ; *Iron ; Oceans and Seas ; Photosynthesis ; Phytoplankton/*growth & development/metabolism ; *Seawater ; Temperature
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 84
    facet.materialart.
    Unknown
    The biogeochemical cycles of trace metals in the oceans (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2003-05-10
    Description: Planktonic uptake of some essential metals results in extraordinarily low concentrations in surface seawater. To sequester or take up these micronutrients, various microorganisms apparently release strong complexing agents and catalyze redox reactions that modify the bioavailability of trace metals and promote their rapid cycling in the upper water column. In turn, the low availability of some metals controls the rate of photosynthesis in parts of the oceans and the transformation and uptake of major nutrients such as nitrogen. The extremely low concentrations of several essential metals are both the cause and the result of ultraefficient uptake systems in the plankton and of widespread replacement of metals by one another for various biochemical functions.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Morel, F M M -- Price, N M -- New York, N.Y. -- Science. 2003 May 9;300(5621):944-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Geosciences, Princeton University, Princeton, NJ 08544, USA. morel@princeton.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12738853" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bacteria/growth & development/*metabolism ; Carbon/metabolism ; Chelating Agents/metabolism ; Metals/analysis/chemistry/*metabolism ; Nitrogen/metabolism ; Oceans and Seas ; Oxidation-Reduction ; Photosynthesis ; Phytoplankton/growth & development/*metabolism ; Plankton/growth & development/*metabolism ; Seawater/*chemistry/microbiology ; Trace Elements/analysis/chemistry/*metabolism
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 85
    facet.materialart.
    Unknown
    Forest research. Sky-high experiments (2005)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2005-08-27
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pennisi, Elizabeth -- New York, N.Y. -- Science. 2005 Aug 26;309(5739):1314-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16123277" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Atmosphere ; Biodiversity ; Carbon/analysis ; *Carbon Dioxide/metabolism ; *Climate ; *Ecosystem ; Greenhouse Effect ; Internationality ; Photosynthesis ; Research Support as Topic ; Soil/analysis ; *Trees/growth & development/metabolism ; Tropical Climate
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 86
    facet.materialart.
    Unknown
    Environmental genome shotgun sequencing of the Sargasso Sea (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-04-07
    Description: We have applied "whole-genome shotgun sequencing" to microbial populations collected en masse on tangential flow and impact filters from seawater samples collected from the Sargasso Sea near Bermuda. A total of 1.045 billion base pairs of nonredundant sequence was generated, annotated, and analyzed to elucidate the gene content, diversity, and relative abundance of the organisms within these environmental samples. These data are estimated to derive from at least 1800 genomic species based on sequence relatedness, including 148 previously unknown bacterial phylotypes. We have identified over 1.2 million previously unknown genes represented in these samples, including more than 782 new rhodopsin-like photoreceptors. Variation in species present and stoichiometry suggests substantial oceanic microbial diversity.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Venter, J Craig -- Remington, Karin -- Heidelberg, John F -- Halpern, Aaron L -- Rusch, Doug -- Eisen, Jonathan A -- Wu, Dongying -- Paulsen, Ian -- Nelson, Karen E -- Nelson, William -- Fouts, Derrick E -- Levy, Samuel -- Knap, Anthony H -- Lomas, Michael W -- Nealson, Ken -- White, Owen -- Peterson, Jeremy -- Hoffman, Jeff -- Parsons, Rachel -- Baden-Tillson, Holly -- Pfannkoch, Cynthia -- Rogers, Yu-Hui -- Smith, Hamilton O -- New York, N.Y. -- Science. 2004 Apr 2;304(5667):66-74. Epub 2004 Mar 4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute for Biological Energy Alternatives, 1901 Research Boulevard, Rockville, MD 20850, USA. jcventer@tcag.org〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15001713" target="_blank"〉PubMed〈/a〉
    Keywords: Archaea/*genetics ; Atlantic Ocean ; Bacteria/*genetics ; Bacteriophages/genetics ; Biodiversity ; Computational Biology ; Cyanobacteria/genetics/growth & development/metabolism ; *Ecosystem ; Eukaryotic Cells ; Genes, Archaeal ; Genes, Bacterial ; Genes, rRNA ; Genome, Archaeal ; *Genome, Bacterial ; *Genomics ; Molecular Sequence Data ; Photosynthesis ; Phylogeny ; Plasmids ; Rhodopsin/genetics ; Rhodopsins, Microbial ; Seawater/*microbiology ; *Sequence Analysis, DNA ; Water Microbiology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 87
    facet.materialart.
    Unknown
    The effects of iron fertilization on carbon sequestration in the Southern Ocean (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-04-17
    Description: An unresolved issue in ocean and climate sciences is whether changes to the surface ocean input of the micronutrient iron can alter the flux of carbon to the deep ocean. During the Southern Ocean Iron Experiment, we measured an increase in the flux of particulate carbon from the surface mixed layer, as well as changes in particle cycling below the iron-fertilized patch. The flux of carbon was similar in magnitude to that of natural blooms in the Southern Ocean and thus small relative to global carbon budgets and proposed geoengineering plans to sequester atmospheric carbon dioxide in the deep sea.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Buesseler, Ken O -- Andrews, John E -- Pike, Steven M -- Charette, Matthew A -- New York, N.Y. -- Science. 2004 Apr 16;304(5669):414-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Marine Chemistry and Geochemistry, Woods Hole Oceanographic Institution, Woods Hole, MA 02543, USA. kbuesseler@whoi.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15087543" target="_blank"〉PubMed〈/a〉
    Keywords: Biomass ; Carbon/*analysis/metabolism ; *Iron/analysis/metabolism ; Oceans and Seas ; Photosynthesis ; Phytoplankton/*growth & development/metabolism ; *Seawater/chemistry ; Thorium
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 88
    facet.materialart.
    Unknown
    Distributions of microbial activities in deep subseafloor sediments (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-12-25
    Description: Diverse microbial communities and numerous energy-yielding activities occur in deeply buried sediments of the eastern Pacific Ocean. Distributions of metabolic activities often deviate from the standard model. Rates of activities, cell concentrations, and populations of cultured bacteria vary consistently from one subseafloor environment to another. Net rates of major activities principally rely on electron acceptors and electron donors from the photosynthetic surface world. At open-ocean sites, nitrate and oxygen are supplied to the deepest sedimentary communities through the underlying basaltic aquifer. In turn, these sedimentary communities may supply dissolved electron donors and nutrients to the underlying crustal biosphere.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉D'Hondt, Steven -- Jorgensen, Bo Barker -- Miller, D Jay -- Batzke, Anja -- Blake, Ruth -- Cragg, Barry A -- Cypionka, Heribert -- Dickens, Gerald R -- Ferdelman, Timothy -- Hinrichs, Kai-Uwe -- Holm, Nils G -- Mitterer, Richard -- Spivack, Arthur -- Wang, Guizhi -- Bekins, Barbara -- Engelen, Bert -- Ford, Kathryn -- Gettemy, Glen -- Rutherford, Scott D -- Sass, Henrik -- Skilbeck, C Gregory -- Aiello, Ivano W -- Guerin, Gilles -- House, Christopher H -- Inagaki, Fumio -- Meister, Patrick -- Naehr, Thomas -- Niitsuma, Sachiko -- Parkes, R John -- Schippers, Axel -- Smith, David C -- Teske, Andreas -- Wiegel, Juergen -- Padilla, Christian Naranjo -- Acosta, Juana Luz Solis -- New York, N.Y. -- Science. 2004 Dec 24;306(5705):2216-21.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Ocean Drilling Program Leg 201 Shipboard Scientific Party, NASA Astrobiology Institute, University of Rhode Island Graduate School of Oceanography, South Ferry Road, Narragansett, RI 02882, USA. dhondt@gso.uri.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15618510" target="_blank"〉PubMed〈/a〉
    Keywords: Bacteria/growth & development/isolation & purification/*metabolism ; Carbon/metabolism ; Colony Count, Microbial ; *Ecosystem ; Electron Transport ; Geologic Sediments/*microbiology ; Iron/metabolism ; Manganese/metabolism ; Methane/metabolism ; Nitrates/metabolism ; Oxidants/metabolism ; Oxidation-Reduction ; Pacific Ocean ; Peru ; Photosynthesis ; Seawater/chemistry ; Sulfates/metabolism ; Thermodynamics
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 89
    facet.materialart.
    Unknown
    Oceanography. Microbes, molecules, and marine ecosystems (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-03-16
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Azam, Farooq -- Worden, Alexandra Z -- R01 A146600/PHS HHS/ -- New York, N.Y. -- Science. 2004 Mar 12;303(5664):1622-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Marine Biology Research Division, Scripps Institution of Oceanography, University of California, San Diego, La Jolla, CA 92093, USA. fazam@ucsd.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15016987" target="_blank"〉PubMed〈/a〉
    Keywords: Bacteria/genetics/*growth & development/*metabolism ; Bacteriophages/growth & development/metabolism ; Biodiversity ; *Ecosystem ; Genomics ; *Oceanography ; Oceans and Seas ; Photosynthesis ; Phytoplankton/growth & development/metabolism ; Seawater/*microbiology ; Systems Theory ; Viruses/*growth & development/metabolism
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 90
    facet.materialart.
    Unknown
    Ecology. Experimental drought predicts grim future for rainforest (2005)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2005-04-16
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Stokstad, Erik -- New York, N.Y. -- Science. 2005 Apr 15;308(5720):346-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15831736" target="_blank"〉PubMed〈/a〉
    Keywords: Brazil ; Carbon/metabolism ; *Disasters ; *Ecosystem ; Fires ; Photosynthesis ; *Rain ; Seasons ; *Trees/growth & development ; *Tropical Climate
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 91
    facet.materialart.
    Unknown
    In situ stable isotope probing of methanogenic archaea in the rice rhizosphere (2005)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2005-08-16
    Description: Microorganisms living in anoxic rice soils contribute 10 to 25% of global methane emissions. The most important carbon source for CH4 production is plant-derived carbon that enters soil as root exudates and debris. Pulse labeling of rice plants with 13CO2 resulted in incorporation of 13C into the ribosomal RNA of Rice Cluster I Archaea in the soil, indicating that this archaeal group plays a key role in CH4 production from plant-derived carbon. This group of microorganisms has not yet been isolated but appears to be of global environmental importance.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lu, Yahai -- Conrad, Ralf -- New York, N.Y. -- Science. 2005 Aug 12;309(5737):1088-90.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉College of Resources and Environmental Sciences, China Agricultural University, Beijing 100094, China.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16099988" target="_blank"〉PubMed〈/a〉
    Keywords: Archaea/classification/genetics/growth & development/*metabolism ; Carbon Dioxide/metabolism ; Carbon Isotopes/*metabolism ; Cloning, Molecular ; *Ecosystem ; Hydrogen/metabolism ; Methane/*metabolism ; Molecular Sequence Data ; Oryza/metabolism/*microbiology ; Photosynthesis ; Phylogeny ; Plant Roots/metabolism/microbiology ; Polymorphism, Restriction Fragment Length ; RNA, Archaeal/metabolism ; RNA, Ribosomal, 16S/genetics/metabolism ; *Soil Microbiology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 92
    facet.materialart.
    Unknown
    The genome of the diatom Thalassiosira pseudonana: ecology, evolution, and metabolism (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-10-02
    Description: Diatoms are unicellular algae with plastids acquired by secondary endosymbiosis. They are responsible for approximately 20% of global carbon fixation. We report the 34 million-base pair draft nuclear genome of the marine diatom Thalassiosira pseudonana and its 129 thousand-base pair plastid and 44 thousand-base pair mitochondrial genomes. Sequence and optical restriction mapping revealed 24 diploid nuclear chromosomes. We identified novel genes for silicic acid transport and formation of silica-based cell walls, high-affinity iron uptake, biosynthetic enzymes for several types of polyunsaturated fatty acids, use of a range of nitrogenous compounds, and a complete urea cycle, all attributes that allow diatoms to prosper in aquatic environments.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Armbrust, E Virginia -- Berges, John A -- Bowler, Chris -- Green, Beverley R -- Martinez, Diego -- Putnam, Nicholas H -- Zhou, Shiguo -- Allen, Andrew E -- Apt, Kirk E -- Bechner, Michael -- Brzezinski, Mark A -- Chaal, Balbir K -- Chiovitti, Anthony -- Davis, Aubrey K -- Demarest, Mark S -- Detter, J Chris -- Glavina, Tijana -- Goodstein, David -- Hadi, Masood Z -- Hellsten, Uffe -- Hildebrand, Mark -- Jenkins, Bethany D -- Jurka, Jerzy -- Kapitonov, Vladimir V -- Kroger, Nils -- Lau, Winnie W Y -- Lane, Todd W -- Larimer, Frank W -- Lippmeier, J Casey -- Lucas, Susan -- Medina, Monica -- Montsant, Anton -- Obornik, Miroslav -- Parker, Micaela Schnitzler -- Palenik, Brian -- Pazour, Gregory J -- Richardson, Paul M -- Rynearson, Tatiana A -- Saito, Mak A -- Schwartz, David C -- Thamatrakoln, Kimberlee -- Valentin, Klaus -- Vardi, Assaf -- Wilkerson, Frances P -- Rokhsar, Daniel S -- New York, N.Y. -- Science. 2004 Oct 1;306(5693):79-86.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉School of Oceanography, University of Washington, Seattle, WA 98195, USA. armbrust@ocean.washington.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15459382" target="_blank"〉PubMed〈/a〉
    Keywords: Adaptation, Physiological ; Algal Proteins/chemistry/genetics/physiology ; Animals ; *Biological Evolution ; Cell Nucleus/genetics ; Chromosomes ; DNA/genetics ; Diatoms/chemistry/cytology/*genetics/metabolism ; *Ecosystem ; Energy Metabolism ; *Genome ; Iron/metabolism ; Light ; Light-Harvesting Protein Complexes/chemistry/genetics/metabolism ; Mitochondria/genetics ; Molecular Sequence Data ; Nitrogen/metabolism ; Photosynthesis ; Plastids/genetics ; Restriction Mapping ; Sequence Alignment ; *Sequence Analysis, DNA ; Silicic Acid/metabolism ; Symbiosis ; Urea/metabolism
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 93
    facet.materialart.
    Unknown
    Earth science. The story of O2 (2005)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2005-06-18
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kerr, Richard A -- New York, N.Y. -- Science. 2005 Jun 17;308(5729):1730-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15961643" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Atmosphere ; Bacteria/metabolism ; *Biological Evolution ; Cyanobacteria/growth & development/metabolism ; *Earth (Planet) ; Ecosystem ; Eukaryota/genetics/metabolism ; Eukaryotic Cells/physiology ; *Evolution, Planetary ; Fossils ; Geologic Sediments ; Hydrogen ; Methane/metabolism ; Oxidation-Reduction ; *Oxygen/analysis/metabolism ; Photosynthesis ; Seawater
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 94
    facet.materialart.
    Unknown
    Carbon flux and growth in mature deciduous forest trees exposed to elevated CO2 (2005)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2005-08-27
    Description: Whether rising atmospheric carbon dioxide (CO2) concentrations will cause forests to grow faster and store more carbon is an open question. Using free air CO2 release in combination with a canopy crane, we found an immediate and sustained enhancement of carbon flux through 35-meter-tall temperate forest trees when exposed to elevated CO2. However, there was no overall stimulation in stem growth and leaf litter production after 4 years. Photosynthetic capacity was not reduced, leaf chemistry changes were minor, and tree species differed in their responses. Although growing vigorously, these trees did not accrete more biomass carbon in stems in response to elevated CO2, thus challenging projections of growth responses derived from tests with smaller trees.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Korner, Christian -- Asshoff, Roman -- Bignucolo, Olivier -- Hattenschwiler, Stephan -- Keel, Sonja G -- Pelaez-Riedl, Susanna -- Pepin, Steeve -- Siegwolf, Rolf T W -- Zotz, Gerhard -- New York, N.Y. -- Science. 2005 Aug 26;309(5739):1360-2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute of Botany, University of Basel, Schonbeinstrasse 6, CH-4056 Basel, Switzerland. ch.koerner@unibas.ch〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16123297" target="_blank"〉PubMed〈/a〉
    Keywords: Atmosphere ; Betulaceae/growth & development/metabolism ; Biomass ; Carbon/analysis/*metabolism ; *Carbon Dioxide/analysis ; Carbon Isotopes ; Ecosystem ; Fagus/growth & development/metabolism ; Lignin/analysis ; Nitrogen/analysis ; Photosynthesis ; Plant Leaves/metabolism ; Plant Shoots/growth & development ; Plant Stems/growth & development ; Quercus/growth & development/metabolism ; Soil/analysis ; Switzerland ; Trees/*growth & development/metabolism
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 95
    facet.materialart.
    Unknown
    Geochemistry. Biogeochemical cycling of iron isotopes (2005)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2005-08-16
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Johnson, Clark M -- Beard, Brian L -- New York, N.Y. -- Science. 2005 Aug 12;309(5737):1025-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Geology and Geophysics, University of Wisconsin-Madison, Madison, WI 53706, USA. clarkj@geology.wisc.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16099969" target="_blank"〉PubMed〈/a〉
    Keywords: Anaerobiosis ; Atmosphere ; Bacteria/metabolism ; Chemical Precipitation ; Ferric Compounds/chemistry/metabolism ; Geologic Sediments/*chemistry ; Iron Isotopes/analysis/*chemistry/*metabolism ; Oceans and Seas ; Oxidation-Reduction ; Oxygen ; Photosynthesis ; Seawater/chemistry ; Temperature
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 96
    facet.materialart.
    Unknown
    The secret life of fungi (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-06-12
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pennisi, Elizabeth -- New York, N.Y. -- Science. 2004 Jun 11;304(5677):1620-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15192215" target="_blank"〉PubMed〈/a〉
    Keywords: Biodiversity ; Biological Specimen Banks ; Carbohydrate Metabolism ; Ecosystem ; Fungi/genetics/growth & development/*physiology ; Mycorrhizae/genetics/growth & development/*physiology ; Orchidaceae/growth & development/metabolism ; Photosynthesis ; *Plant Development ; Plant Physiological Phenomena ; Plant Roots/*microbiology ; Plants/microbiology ; *Soil Microbiology ; Soil Pollutants/metabolism ; *Symbiosis
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 97
    facet.materialart.
    Unknown
    Southern Ocean iron enrichment experiment: carbon cycling in high- and low-Si waters (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-04-17
    Description: The availability of iron is known to exert a controlling influence on biological productivity in surface waters over large areas of the ocean and may have been an important factor in the variation of the concentration of atmospheric carbon dioxide over glacial cycles. The effect of iron in the Southern Ocean is particularly important because of its large area and abundant nitrate, yet iron-enhanced growth of phytoplankton may be differentially expressed between waters with high silicic acid in the south and low silicic acid in the north, where diatom growth may be limited by both silicic acid and iron. Two mesoscale experiments, designed to investigate the effects of iron enrichment in regions with high and low concentrations of silicic acid, were performed in the Southern Ocean. These experiments demonstrate iron's pivotal role in controlling carbon uptake and regulating atmospheric partial pressure of carbon dioxide.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Coale, Kenneth H -- Johnson, Kenneth S -- Chavez, Francisco P -- Buesseler, Ken O -- Barber, Richard T -- Brzezinski, Mark A -- Cochlan, William P -- Millero, Frank J -- Falkowski, Paul G -- Bauer, James E -- Wanninkhof, Rik H -- Kudela, Raphael M -- Altabet, Mark A -- Hales, Burke E -- Takahashi, Taro -- Landry, Michael R -- Bidigare, Robert R -- Wang, Xiujun -- Chase, Zanna -- Strutton, Pete G -- Friederich, Gernot E -- Gorbunov, Maxim Y -- Lance, Veronica P -- Hilting, Anna K -- Hiscock, Michael R -- Demarest, Mark -- Hiscock, William T -- Sullivan, Kevin F -- Tanner, Sara J -- Gordon, R Mike -- Hunter, Craig N -- Elrod, Virginia A -- Fitzwater, Steve E -- Jones, Janice L -- Tozzi, Sasha -- Koblizek, Michal -- Roberts, Alice E -- Herndon, Julian -- Brewster, Jodi -- Ladizinsky, Nicolas -- Smith, Geoffrey -- Cooper, David -- Timothy, David -- Brown, Susan L -- Selph, Karen E -- Sheridan, Cecelia C -- Twining, Benjamin S -- Johnson, Zackary I -- New York, N.Y. -- Science. 2004 Apr 16;304(5669):408-14.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Moss Landing Marine Laboratories, 8272 Moss Landing Road, Moss Landing, CA 95039-9647, USA. coale@mlml.calstate.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15087542" target="_blank"〉PubMed〈/a〉
    Keywords: Atmosphere ; Biomass ; Carbon/analysis/*metabolism ; Carbon Dioxide/analysis/metabolism ; Chlorophyll/analysis ; Diatoms/growth & development/metabolism ; Ecosystem ; *Iron/analysis/metabolism ; Nitrates/analysis/metabolism ; Nitrogen/analysis/metabolism ; Oceans and Seas ; Photosynthesis ; Phytoplankton/*growth & development/metabolism ; Seawater/chemistry ; *Silicic Acid/analysis/metabolism
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 98
    facet.materialart.
    Unknown
    Fungal proliferation at the Cretaceous-Tertiary boundary (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-03-06
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Vajda, Vivi -- McLoughlin, Stephen -- New York, N.Y. -- Science. 2004 Mar 5;303(5663):1489.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉GeoBiosphere Science Centre, Lund University, Solvegatan 12, SE-223 62, Lund, Sweden. vivi.vajda@geol.lu.se〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15001770" target="_blank"〉PubMed〈/a〉
    Keywords: *Coal ; Ferns/growth & development ; Fungi/growth & development/*isolation & purification ; Geologic Sediments/microbiology ; Hyphae/isolation & purification ; Mining ; New Zealand ; *Paleontology ; Photosynthesis ; Plant Development ; Pollen ; Spores/isolation & purification ; Spores, Fungal/isolation & purification ; Time
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 99
    facet.materialart.
    Unknown
    Rising atmospheric CO2 reduces sequestration of root-derived soil carbon (2005)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2005-09-10
    Description: Forests have a key role as carbon sinks, which could potentially mitigate the continuing increase in atmospheric carbon dioxide concentration and associated climate change. We show that carbon dioxide enrichment, although causing short-term growth stimulation in a range of European tree species, also leads to an increase in soil microbial respiration and a marked decline in sequestration of root-derived carbon in the soil. These findings indicate that, should similar processes operate in forest ecosystems, the size of the annual terrestrial carbon sink may be substantially reduced, resulting in a positive feedback on the rate of increase in atmospheric carbon dioxide concentration.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Heath, James -- Ayres, Edward -- Possell, Malcolm -- Bardgett, Richard D -- Black, Helaina I J -- Grant, Helen -- Ineson, Phil -- Kerstiens, Gerhard -- New York, N.Y. -- Science. 2005 Sep 9;309(5741):1711-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biological Sciences, Institute of Environmental and Natural Sciences, Lancaster University, Bailrigg, Lancaster, LA1 4YQ, UK. j.heath@lancaster.ac.uk〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16151007" target="_blank"〉PubMed〈/a〉
    Keywords: *Atmosphere ; Betulaceae/genetics/metabolism ; Biomass ; Carbon/*analysis/metabolism ; *Carbon Dioxide/metabolism ; Fagaceae/genetics/metabolism ; Nitrogen/analysis ; Photosynthesis ; Pinaceae/growth & development/metabolism ; Plant Leaves/chemistry/metabolism ; Plant Roots/growth & development/*metabolism ; Soil/*analysis ; Soil Microbiology ; Trees/growth & development/*metabolism
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 100
    facet.materialart.
    Unknown
    The rise of oxygen over the past 205 million years and the evolution of large placental mammals (2005)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2005-10-01
    Description: On the basis of a carbon isotopic record of both marine carbonates and organic matter from the Triassic-Jurassic boundary to the present, we modeled oxygen concentrations over the past 205 million years. Our analysis indicates that atmospheric oxygen approximately doubled over this period, with relatively rapid increases in the early Jurassic and the Eocene. We suggest that the overall increase in oxygen, mediated by the formation of passive continental margins along the Atlantic Ocean during the opening phase of the current Wilson cycle, was a critical factor in the evolution, radiation, and subsequent increase in average size of placental mammals.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Falkowski, Paul G -- Katz, Miriam E -- Milligan, Allen J -- Fennel, Katja -- Cramer, Benjamin S -- Aubry, Marie Pierre -- Berner, Robert A -- Novacek, Michael J -- Zapol, Warren M -- New York, N.Y. -- Science. 2005 Sep 30;309(5744):2202-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute of Marine and Coastal Sciences, Rutgers University, 71 Dudley Road, New Brunswick, NJ 08901, USA. falko@imcs.rutgers.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16195457" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Atmosphere ; *Biological Evolution ; Biomass ; Body Size ; Carbon/analysis ; Carbon Dioxide/analysis ; Carbon Isotopes/analysis ; Carbonates ; Fossils ; Geologic Sediments/chemistry ; *Mammals/anatomy & histology/physiology ; Oxidation-Reduction ; *Oxygen/analysis ; Photosynthesis ; Phytoplankton/physiology ; Placenta/physiology ; Regression Analysis ; Reproduction ; Sulfur Isotopes/analysis ; Temperature ; Time
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...