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  • Mutation  (850)
  • *Ecosystem  (563)
  • American Association for the Advancement of Science (AAAS)  (1,410)
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  • 2005-2009  (1,098)
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  • 1
    Publication Date: 2009-08-29
    Description: Coat color and type are essential characteristics of domestic dog breeds. Although the genetic basis of coat color has been well characterized, relatively little is known about the genes influencing coat growth pattern, length, and curl. We performed genome-wide association studies of more than 1000 dogs from 80 domestic breeds to identify genes associated with canine fur phenotypes. Taking advantage of both inter- and intrabreed variability, we identified distinct mutations in three genes, RSPO2, FGF5, and KRT71 (encoding R-spondin-2, fibroblast growth factor-5, and keratin-71, respectively), that together account for most coat phenotypes in purebred dogs in the United States. Thus, an array of varied and seemingly complex phenotypes can be reduced to the combinatorial effects of only a few genes.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2897713/" 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/PMC2897713/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cadieu, Edouard -- Neff, Mark W -- Quignon, Pascale -- Walsh, Kari -- Chase, Kevin -- Parker, Heidi G -- Vonholdt, Bridgett M -- Rhue, Alison -- Boyko, Adam -- Byers, Alexandra -- Wong, Aaron -- Mosher, Dana S -- Elkahloun, Abdel G -- Spady, Tyrone C -- Andre, Catherine -- Lark, K Gordon -- Cargill, Michelle -- Bustamante, Carlos D -- Wayne, Robert K -- Ostrander, Elaine A -- 1R01GM83606/GM/NIGMS NIH HHS/ -- GM063056/GM/NIGMS NIH HHS/ -- R01 GM063056/GM/NIGMS NIH HHS/ -- R01 GM063056-09/GM/NIGMS NIH HHS/ -- Intramural NIH HHS/ -- New York, N.Y. -- Science. 2009 Oct 2;326(5949):150-3. doi: 10.1126/science.1177808. Epub 2009 Aug 27.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉National Human Genome Research Institute, National Institutes of Health, Bethesda, MD 20892, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19713490" target="_blank"〉PubMed〈/a〉
    Keywords: 3' Untranslated Regions ; Animals ; Dogs/*genetics ; Fibroblast Growth Factor 5/*genetics ; Genome-Wide Association Study ; *Hair/anatomy & histology/growth & development ; Haplotypes ; Keratins, Hair-Specific/*genetics ; Lod Score ; Molecular Sequence Data ; Mutation ; Oligonucleotide Array Sequence Analysis ; Phenotype ; *Polymorphism, Single Nucleotide ; Sequence Analysis, DNA ; Thrombospondins/*genetics ; United States
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  • 2
    Publication Date: 2009-09-12
    Description: RNA interference (RNAi), a gene-silencing pathway triggered by double-stranded RNA, is conserved in diverse eukaryotic species but has been lost in the model budding yeast Saccharomyces cerevisiae. Here, we show that RNAi is present in other budding yeast species, including Saccharomyces castellii and Candida albicans. These species use noncanonical Dicer proteins to generate small interfering RNAs, which mostly correspond to transposable elements and Y' subtelomeric repeats. In S. castellii, RNAi mutants are viable but have excess Y' messenger RNA levels. In S. cerevisiae, introducing Dicer and Argonaute of S. castellii restores RNAi, and the reconstituted pathway silences endogenous retrotransposons. These results identify a previously unknown class of Dicer proteins, bring the tool of RNAi to the study of budding yeasts, and bring the tools of budding yeast to the study of RNAi.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3786161/" 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/PMC3786161/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Drinnenberg, Ines A -- Weinberg, David E -- Xie, Kathleen T -- Mower, Jeffrey P -- Wolfe, Kenneth H -- Fink, Gerald R -- Bartel, David P -- GM0305010/GM/NIGMS NIH HHS/ -- GM040266/GM/NIGMS NIH HHS/ -- GM067031/GM/NIGMS NIH HHS/ -- R01 GM067031/GM/NIGMS NIH HHS/ -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2009 Oct 23;326(5952):544-50. doi: 10.1126/science.1176945. Epub 2009 Sep 10.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Whitehead Institute for Biomedical Research, 9 Cambridge Center, Cambridge, MA 02142, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19745116" target="_blank"〉PubMed〈/a〉
    Keywords: Fungal Proteins/genetics/metabolism ; Gene Expression Profiling ; Genes, Fungal ; Genetic Loci ; Mutation ; Open Reading Frames ; *RNA Interference ; RNA, Double-Stranded/genetics/metabolism ; RNA, Fungal/genetics/metabolism ; RNA, Messenger/genetics/metabolism ; RNA, Small Interfering/genetics/*metabolism ; Repetitive Sequences, Nucleic Acid ; Retroelements ; Ribonuclease III/genetics/metabolism ; Saccharomyces/*genetics/metabolism ; Saccharomyces cerevisiae/*genetics/metabolism ; Saccharomyces cerevisiae Proteins/genetics/metabolism ; Saccharomycetales/*genetics/metabolism ; Sequence Analysis, RNA ; Transcription, Genetic ; Transformation, Genetic
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  • 3
    Publication Date: 2009-02-07
    Description: Prabhakar et al. (Reports, 5 September 2008, p. 1346) argued that the conserved noncoding sequence HACNS1 has undergone positive selection and contributed to human adaptation. However, the pattern of substitution in HACNS1 is more consistent with the neutral process of biased gene conversion (BGC). The reported human-specific gain of function is likely due to the accumulation of deleterious mutations driven by BGC, not positive selection.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Duret, Laurent -- Galtier, Nicolas -- New York, N.Y. -- Science. 2009 Feb 6;323(5915):714; author reply 714. doi: 10.1126/science.1165848.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Universite de Lyon, Universite Lyon 1, CNRS, UMR5558, Laboratoire de Biometrie et Biologie Evolutive, F-69622, Villeurbanne, France. duret@biomserv.univ-lyon1.fr〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19197042" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Conserved Sequence ; *Enhancer Elements, Genetic ; Evolution, Molecular ; *Gene Conversion ; Humans ; Mutation ; Recombination, Genetic ; Selection, Genetic
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  • 4
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2009-05-09
    Description: Understanding of plant-pathogen coevolution in natural systems continues to develop as new theories at the population and species level are increasingly informed by studies unraveling the molecular basis of interactions between individual plants and their pathogens. The next challenge lies in further integration of these approaches to develop a comprehensive picture of how life history traits of both players interact with the environment to shape evolutionary trajectories.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2689373/" 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/PMC2689373/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Burdon, Jeremy J -- Thrall, Peter H -- R01 GM074265-01A2/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2009 May 8;324(5928):755-6. doi: 10.1126/science.1171663.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Commonwealth Scientific and Industrial Research Organization (CSIRO)-Plant Industry, Post Office Box 1600, Canberra, ACT 2601, Australia. Jeremy.Burdon@csiro.au〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19423818" target="_blank"〉PubMed〈/a〉
    Keywords: *Biological Evolution ; *Ecosystem ; Fungal Proteins/genetics/metabolism ; Fungi/genetics/*pathogenicity/physiology ; *Host-Pathogen Interactions ; Immunity, Innate ; Plant Diseases/immunology/*microbiology ; Plant Proteins/genetics/metabolism ; Plants/genetics/immunology/metabolism/*microbiology
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  • 5
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2009-08-01
    Description: Microorganisms have critical roles in the functioning of soil in nutrient cycling, structural formation, and plant interactions, both positive and negative. These roles are important in reestablishing function and biodiversity in ecosystem restoration. Measurement of the community indicates the status of the system in relation to restoration targets and the effectiveness of management interventions, and manipulation of the community shows promise in the enhancement of the rate of recovery of degraded systems.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Harris, Jim -- New York, N.Y. -- Science. 2009 Jul 31;325(5940):573-4. doi: 10.1126/science.1172975.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Natural Resources, Cranfield University, Cranfield, Bedfordshire MK43 0AL, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19644111" target="_blank"〉PubMed〈/a〉
    Keywords: *Bacterial Physiological Phenomena ; Biodiversity ; *Conservation of Natural Resources ; *Ecosystem ; Fungi/*physiology ; Mycorrhizae/*physiology ; Plant Physiological Phenomena ; *Soil Microbiology ; Symbiosis
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  • 6
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2009-08-01
    Description: Ecological restoration is an activity that ideally results in the return of an ecosystem to an undisturbed state. Ecosystem services are the benefits humans derive from ecosystems. The two have been joined to support growing environmental markets with the goal of creating restoration-based credits that can be bought and sold. However, the allure of these markets may be overshadowing shortcomings in the science and practice of ecological restoration. Before making risky investments, we must understand why and when restoration efforts fall short of recovering the full suite of ecosystem services, what can be done to improve restoration success, and why direct measurement of the biophysical processes that support ecosystem services is the only way to guarantee the future success of these markets. Without new science and an oversight framework to protect the ecosystem service assets which people depend, markets could actually accelerate environmental degradation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Palmer, Margaret A -- Filoso, Solange -- New York, N.Y. -- Science. 2009 Jul 31;325(5940):575-6. doi: 10.1126/science.1172976.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Chesapeake Biological Laboratory, University of Maryland Center for Environmental Science, Solomons, MD 20688, USA. mpalmer@umd.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19644112" target="_blank"〉PubMed〈/a〉
    Keywords: Biodiversity ; Biophysical Processes ; *Conservation of Natural Resources ; *Ecosystem ; *Environment ; Humans ; Wetlands
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  • 7
    Publication Date: 2009-02-21
    Description: Thin layers of phytoplankton are important hotspots of ecological activity that are found in the coastal ocean, meters beneath the surface, and contain cell concentrations up to two orders of magnitude above ambient concentrations. Current interpretations of their formation favor abiotic processes, yet many phytoplankton species found in these layers are motile. We demonstrated that layers formed when the vertical migration of phytoplankton was disrupted by hydrodynamic shear. This mechanism, which we call gyrotactic trapping, can be responsible for the thin layers of phytoplankton commonly observed in the ocean. These results reveal that the coupling between active microorganism motility and ambient fluid motion can shape the macroscopic features of the marine ecological landscape.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Durham, William M -- Kessler, John O -- Stocker, Roman -- New York, N.Y. -- Science. 2009 Feb 20;323(5917):1067-70. doi: 10.1126/science.1167334.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Civil and Environmental Engineering, Massachusetts Institute of Technology (MIT), Cambridge, MA 02139, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19229037" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Biomechanical Phenomena ; Cell Shape ; Chlamydomonas/cytology/*physiology ; *Ecosystem ; Flagella ; Gravitation ; Movement ; Phytoplankton/cytology/*physiology ; *Water ; *Water Movements
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  • 8
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2009-09-12
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Alberts, Bruce -- New York, N.Y. -- Science. 2009 Sep 11;325(5946):1319. doi: 10.1126/science.1181224.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19745119" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antineoplastic Agents/pharmacology/therapeutic use ; *Biomedical Research ; DNA Repair ; Drug Discovery ; Humans ; Mutation ; *Neoplasms/drug therapy/genetics
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  • 9
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2009-09-19
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Patterson, David J -- New York, N.Y. -- Science. 2009 Sep 18;325(5947):1506-7. doi: 10.1126/science.1179690.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Encyclopedia of Life, Biodiversity Informatics, Marine Biological Laboratory, Woods Hole, MA 02543, USA. dpatterson@eol.org〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19762632" target="_blank"〉PubMed〈/a〉
    Keywords: Arctic Regions ; *Bacteria/classification ; Bacterial Physiological Phenomena ; Biodiversity ; *Diatoms ; *Ecosystem ; Geologic Sediments/*microbiology ; Seawater/*microbiology
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  • 10
    Publication Date: 2009-05-09
    Description: Climate change could lead to mismatches between the reproductive cycles of marine organisms and their planktonic food. We tested this hypothesis by comparing shrimp (Pandalus borealis) egg hatching times and satellite-derived phytoplankton bloom dynamics throughout the North Atlantic. At large spatial and long temporal (10 years or longer) scales, hatching was correlated with the timing of the spring phytoplankton bloom. Annual egg development and hatching times were determined locally by bottom water temperature. We conclude that different populations of P. borealis have adapted to local temperatures and bloom timing, matching egg hatching to food availability under average conditions. This strategy is vulnerable to interannual oceanographic variability and long-term climatic changes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Koeller, P -- Fuentes-Yaco, C -- Platt, T -- Sathyendranath, S -- Richards, A -- Ouellet, P -- Orr, D -- Skuladottir, U -- Wieland, K -- Savard, L -- Aschan, M -- New York, N.Y. -- Science. 2009 May 8;324(5928):791-3. doi: 10.1126/science.1170987.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Fisheries and Oceans, Bedford Institute of Oceanography, Post Office Box 1006, Dartmouth, B2Y 4A2 Nova Scotia, Canada. koellerp@mar.dfo-mpo.gc.ca〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19423827" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Atlantic Ocean ; Climate ; *Cold Temperature ; *Ecosystem ; Female ; Ovum/growth & development/physiology ; Pandalidae/*physiology ; Phytoplankton/*physiology ; Population Dynamics ; Reproduction ; Seasons ; *Seawater
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  • 11
    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
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  • 12
    Publication Date: 2009-12-08
    Description: Simocyclinones are bifunctional antibiotics that inhibit bacterial DNA gyrase by preventing DNA binding to the enzyme. We report the crystal structure of the complex formed between the N-terminal domain of the Escherichia coli gyrase A subunit and simocyclinone D8, revealing two binding pockets that separately accommodate the aminocoumarin and polyketide moieties of the antibiotic. These are close to, but distinct from, the quinolone-binding site, consistent with our observations that several mutations in this region confer resistance to both agents. Biochemical studies show that the individual moieties of simocyclinone D8 are comparatively weak inhibitors of gyrase relative to the parent compound, but their combination generates a more potent inhibitor. Our results should facilitate the design of drug molecules that target these unexploited binding pockets.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Edwards, Marcus J -- Flatman, Ruth H -- Mitchenall, Lesley A -- Stevenson, Clare E M -- Le, Tung B K -- Clarke, Thomas A -- McKay, Adam R -- Fiedler, Hans-Peter -- Buttner, Mark J -- Lawson, David M -- Maxwell, Anthony -- Biotechnology and Biological Sciences Research Council/United Kingdom -- New York, N.Y. -- Science. 2009 Dec 4;326(5958):1415-8. doi: 10.1126/science.1179123.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biological Chemistry, John Innes Centre, Colney, Norwich NR4 7UH, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19965760" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Anti-Bacterial Agents/chemistry/metabolism/pharmacology ; Binding Sites ; Coumarins/chemistry/metabolism/pharmacology ; Crystallography, X-Ray ; DNA Gyrase/*chemistry/genetics/*metabolism ; DNA, Bacterial/metabolism ; Drug Resistance, Bacterial ; Escherichia coli/drug effects/*enzymology/genetics ; Glycosides/chemistry/metabolism/pharmacology ; Ligands ; Models, Molecular ; Molecular Sequence Data ; Molecular Weight ; Mutagenesis, Site-Directed ; Mutation ; Protein Multimerization ; Protein Structure, Tertiary ; Topoisomerase II Inhibitors
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  • 13
    Publication Date: 2009-02-07
    Description: Biodiversity hotspots, representing regions with high species endemism and conservation threat, have been mapped globally. Yet, biodiversity distribution data from within hotspots are too sparse for effective conservation in the face of rapid environmental change. Using frogs as indicators, ecological niche models under paleoclimates, and simultaneous Bayesian analyses of multispecies molecular data, we compare alternative hypotheses of assemblage-scale response to late Quaternary climate change. This reveals a hotspot within the Brazilian Atlantic forest hotspot. We show that the southern Atlantic forest was climatically unstable relative to the central region, which served as a large climatic refugium for neotropical species in the late Pleistocene. This sets new priorities for conservation in Brazil and establishes a validated approach to biodiversity prediction in other understudied, species-rich regions.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Carnaval, Ana Carolina -- Hickerson, Michael J -- Haddad, Celio F B -- Rodrigues, Miguel T -- Moritz, Craig -- New York, N.Y. -- Science. 2009 Feb 6;323(5915):785-9. doi: 10.1126/science.1166955.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Museum of Vertebrate Zoology, University of California, Berkeley, CA 94720-3160, USA. carnaval@berkeley.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19197066" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Anura/classification/*genetics ; Bayes Theorem ; *Biodiversity ; Brazil ; Conservation of Natural Resources ; DNA, Mitochondrial/genetics ; Demography ; *Ecosystem ; Geography ; Molecular Sequence Data ; Mutation ; Phylogeny ; Population Dynamics ; Time ; *Trees ; *Tropical Climate
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  • 14
    Publication Date: 2009-11-11
    Description: Rapid antigenic evolution in the influenza A virus hemagglutinin precludes effective vaccination with existing vaccines. To understand this phenomenon, we passaged virus in mice immunized with influenza vaccine. Neutralizing antibodies selected mutants with single-amino acid hemagglutinin substitutions that increased virus binding to cell surface glycan receptors. Passaging these high-avidity binding mutants in naive mice, but not immune mice, selected for additional hemagglutinin substitutions that decreased cellular receptor binding avidity. Analyzing a panel of monoclonal antibody hemagglutinin escape mutants revealed a positive correlation between receptor binding avidity and escape from polyclonal antibodies. We propose that in response to variation in neutralizing antibody pressure between individuals, influenza A virus evolves by adjusting receptor binding avidity via amino acid substitutions throughout the hemagglutinin globular domain, many of which simultaneously alter antigenicity.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2784927/" 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/PMC2784927/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hensley, Scott E -- Das, Suman R -- Bailey, Adam L -- Schmidt, Loren M -- Hickman, Heather D -- Jayaraman, Akila -- Viswanathan, Karthik -- Raman, Rahul -- Sasisekharan, Ram -- Bennink, Jack R -- Yewdell, Jonathan W -- GM 57073/GM/NIGMS NIH HHS/ -- U54 GM62116/GM/NIGMS NIH HHS/ -- Z01 AI001014-01/Intramural NIH HHS/ -- New York, N.Y. -- Science. 2009 Oct 30;326(5953):734-6. doi: 10.1126/science.1178258.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Viral Diseases, National Institute of Allergy and Infectious Diseases, Bethesda, MD 20892, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19900932" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antibodies, Neutralizing/immunology ; Antibodies, Viral/immunology ; Antigenic Variation/genetics/*immunology ; Cell Line ; Hemagglutinin Glycoproteins, Influenza Virus/genetics/immunology/*metabolism ; Influenza A Virus, H1N1 Subtype/genetics/*immunology ; Influenza Vaccines/immunology ; Mice ; Mice, Inbred BALB C ; Mice, Inbred C57BL ; Models, Immunological ; Mutation ; Receptors, Virus/*metabolism ; Serial Passage
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  • 15
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2009-08-01
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Koenig, Robert -- New York, N.Y. -- Science. 2009 Jul 31;325(5940):562-3. doi: 10.1126/science.325_562.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19644106" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Biodiversity ; *Conservation of Natural Resources/economics/methods ; *Ecosystem ; Insects ; Plant Development ; *Plants ; South Africa ; Water Supply
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  • 16
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2009-05-30
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Weis, Virginia M -- Allemand, Denis -- New York, N.Y. -- Science. 2009 May 29;324(5931):1153-5. doi: 10.1126/science.1172540.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Zoology, Oregon State University, Corvallis, OR 97331, USA. weisv@science.oregonstate.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19478172" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Anthozoa/genetics/*physiology ; *Calcification, Physiologic ; Dinoflagellida/physiology ; *Ecosystem ; Hydrogen-Ion Concentration ; Oceans and Seas ; Seawater/chemistry ; Stress, Physiological ; *Symbiosis
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  • 17
    Publication Date: 2009-06-13
    Description: Rotavirus outer-layer protein VP7 is a principal target of protective antibodies. Removal of free calcium ions (Ca2+) dissociates VP7 trimers into monomers, releasing VP7 from the virion, and initiates penetration-inducing conformational changes in the other outer-layer protein, VP4. We report the crystal structure at 3.4 angstrom resolution of VP7 bound with the Fab fragment of a neutralizing monoclonal antibody. The Fab binds across the outer surface of the intersubunit contact, which contains two Ca2+ sites. Mutations that escape neutralization by other antibodies suggest that the same region bears the epitopes of most neutralizing antibodies. The monovalent Fab is sufficient to neutralize infectivity. We propose that neutralizing antibodies against VP7 act by stabilizing the trimer, thereby inhibiting the uncoating trigger for VP4 rearrangement. A disulfide-linked trimer is a potential subunit immunogen.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2995306/" 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/PMC2995306/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Aoki, Scott T -- Settembre, Ethan C -- Trask, Shane D -- Greenberg, Harry B -- Harrison, Stephen C -- Dormitzer, Philip R -- AI-21362/AI/NIAID NIH HHS/ -- CA-13202/CA/NCI NIH HHS/ -- DK-56339/DK/NIDDK NIH HHS/ -- R37 CA013202/CA/NCI NIH HHS/ -- R37 CA013202-38/CA/NCI NIH HHS/ -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2009 Jun 12;324(5933):1444-7. doi: 10.1126/science.1170481.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Molecular Medicine, Children's Hospital, Boston, MA 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19520960" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Antibodies, Monoclonal/chemistry/immunology/metabolism ; Antibodies, Viral/chemistry/*immunology/metabolism ; Antigens, Viral/*chemistry/genetics/*immunology/metabolism ; Binding Sites ; Binding Sites, Antibody ; Calcium/metabolism ; Capsid Proteins/*chemistry/genetics/*immunology/metabolism ; Crystallography, X-Ray ; Epitopes/immunology ; Immunoglobulin Fab Fragments/chemistry/*immunology/metabolism ; Models, Molecular ; Molecular Sequence Data ; Mutation ; Neutralization Tests ; Protein Folding ; Protein Multimerization ; Protein Structure, Tertiary ; Protein Subunits ; Recombinant Proteins/chemistry ; Rotavirus/*chemistry/immunology ; Serotyping
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  • 18
    Publication Date: 2009-07-04
    Description: Of fundamental interest in conservation ecology are the regulatory mechanisms that maintain communities. We document a mechanism that maintains forests in the Serengeti ecosystem, Tanzania, and the destabilization when disturbance opens forest canopy. Forest birds, by consuming seeds, protected them from beetle attack. Consumption increased the germination rate and the density of seedlings and recruits, which was sufficient to maintain the forest. Opening of the canopy resulted in loss of birds, increased beetle attack, and loss of germination. Thus, frugivorous birds are necessary for the maintenance of forests. Their absence could have resulted in the observed forest decline since 1966.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sharam, Gregory J -- Sinclair, A R E -- Turkington, Roy -- New York, N.Y. -- Science. 2009 Jul 3;325(5936):51. doi: 10.1126/science.1173805.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Biodiversity Research Center, University of British Columbia, Vancouver, British Columbia V6T 1Z4, Canada.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19574381" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Beetles ; *Birds ; *Ecosystem ; Feeding Behavior ; Germination ; Population Dynamics ; *Seeds/growth & development ; Tanzania ; *Trees/growth & development
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  • 19
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2009-12-19
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pennisi, Elizabeth -- New York, N.Y. -- Science. 2009 Dec 18;326(5960):1612. doi: 10.1126/science.326.5960.1612.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20019263" target="_blank"〉PubMed〈/a〉
    Keywords: Adaptation, Physiological ; Animals ; *Biological Evolution ; DNA-Binding Proteins/genetics/physiology ; Drosophila Proteins/genetics/physiology ; Drosophila melanogaster/*genetics/growth & development/physiology ; *Enhancer Elements, Genetic ; *Gene Expression Regulation, Developmental ; Mutation ; Paired Box Transcription Factors/genetics ; Pigmentation/genetics ; Regulatory Sequences, Nucleic Acid ; Smegmamorpha/anatomy & histology/*genetics/growth & development
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  • 20
    Publication Date: 2009-04-18
    Description: Genes are not simply turned on or off, but instead their expression is fine-tuned to meet the needs of a cell. How genes are modulated so precisely is not well understood. The glucocorticoid receptor (GR) regulates target genes by associating with specific DNA binding sites, the sequences of which differ between genes. Traditionally, these binding sites have been viewed only as docking sites. Using structural, biochemical, and cell-based assays, we show that GR binding sequences, differing by as little as a single base pair, differentially affect GR conformation and regulatory activity. We therefore propose that DNA is a sequence-specific allosteric ligand of GR that tailors the activity of the receptor toward specific target genes.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2777810/" 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/PMC2777810/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Meijsing, Sebastiaan H -- Pufall, Miles A -- So, Alex Y -- Bates, Darren L -- Chen, Lin -- Yamamoto, Keith R -- GM08537/GM/NIGMS NIH HHS/ -- R01 CA020535/CA/NCI NIH HHS/ -- R01 CA020535-31/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 2009 Apr 17;324(5925):407-10. doi: 10.1126/science.1164265.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cellular and Molecular Pharmacology, University of California, San Francisco, CA 94158, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19372434" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Base Sequence ; Binding Sites ; Cell Line, Tumor ; Crystallography, X-Ray ; DNA/*chemistry/*metabolism ; Humans ; Ligands ; Models, Molecular ; Mutation ; Protein Conformation ; Protein Isoforms/chemistry/metabolism ; Protein Multimerization ; Protein Structure, Secondary ; Protein Structure, Tertiary ; Rats ; Receptors, Glucocorticoid/chemistry/genetics/*metabolism ; Transcriptional Activation
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  • 21
    Publication Date: 2009-11-07
    Description: Human activities have more than doubled the amount of nitrogen (N) circulating in the biosphere. One major pathway of this anthropogenic N input into ecosystems has been increased regional deposition from the atmosphere. Here we show that atmospheric N deposition increased the stoichiometric ratio of N and phosphorus (P) in lakes in Norway, Sweden, and Colorado, United States, and, as a result, patterns of ecological nutrient limitation were shifted. Under low N deposition, phytoplankton growth is generally N-limited; however, in high-N deposition lakes, phytoplankton growth is consistently P-limited. Continued anthropogenic amplification of the global N cycle will further alter ecological processes, such as biogeochemical cycling, trophic dynamics, and biological diversity, in the world's lakes, even in lakes far from direct human disturbance.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Elser, James J -- Andersen, Tom -- Baron, Jill S -- Bergstrom, Ann-Kristin -- Jansson, Mats -- Kyle, Marcia -- Nydick, Koren R -- Steger, Laura -- Hessen, Dag O -- New York, N.Y. -- Science. 2009 Nov 6;326(5954):835-7. doi: 10.1126/science.1176199.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉School of Life Sciences, Arizona State University, Tempe, AZ 85287, USA. j.elser@asu.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19892979" target="_blank"〉PubMed〈/a〉
    Keywords: Atmosphere/*chemistry ; Biodiversity ; Biomass ; Colorado ; *Ecosystem ; Food Chain ; Fresh Water/*chemistry ; Human Activities ; Humans ; Nitrates/analysis ; Nitrogen/*analysis ; Norway ; Phosphorus/*analysis ; Phytoplankton/growth & development/*physiology ; Sweden ; Trees
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  • 22
    Publication Date: 2009-04-11
    Description: Synonymous mutations do not alter the encoded protein, but they can influence gene expression. To investigate how, we engineered a synthetic library of 154 genes that varied randomly at synonymous sites, but all encoded the same green fluorescent protein (GFP). When expressed in Escherichia coli, GFP protein levels varied 250-fold across the library. GFP messenger RNA (mRNA) levels, mRNA degradation patterns, and bacterial growth rates also varied, but codon bias did not correlate with gene expression. Rather, the stability of mRNA folding near the ribosomal binding site explained more than half the variation in protein levels. In our analysis, mRNA folding and associated rates of translation initiation play a predominant role in shaping expression levels of individual genes, whereas codon bias influences global translation efficiency and cellular fitness.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3902468/" 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/PMC3902468/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kudla, Grzegorz -- Murray, Andrew W -- Tollervey, David -- Plotkin, Joshua B -- BB/D019621/1/Biotechnology and Biological Sciences Research Council/United Kingdom -- BB/DO19621/1/Biotechnology and Biological Sciences Research Council/United Kingdom -- BB/DO19621/1/Wellcome Trust/United Kingdom -- P50 GM068763/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2009 Apr 10;324(5924):255-8. doi: 10.1126/science.1170160.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biology and Program in Applied Mathematics and Computational Science, University of Pennsylvania, Philadelphia, PA 19104, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19359587" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Substitution ; Base Composition ; Cloning, Molecular ; *Codon ; Escherichia coli/*genetics/growth & development/metabolism ; *Gene Expression ; Gene Library ; Genes, Synthetic ; Green Fluorescent Proteins/*genetics/metabolism ; Mutation ; Nucleic Acid Conformation ; Protein Biosynthesis ; RNA Stability ; RNA, Bacterial/chemistry/genetics/metabolism ; RNA, Messenger/chemistry/*genetics/metabolism ; Spectrometry, Fluorescence
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2009-01-03
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pennisi, Elizabeth -- New York, N.Y. -- Science. 2009 Jan 2;323(5910):27. doi: 10.1126/science.323.5910.27.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19119193" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Anthozoa/growth & development/*physiology ; Australia ; *Calcification, Physiologic ; Calcium Carbonate/analysis ; Carbon Dioxide ; *Ecosystem ; Hydrogen-Ion Concentration ; Oceans and Seas ; Seawater/*chemistry ; Temperature
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  • 24
    Publication Date: 2009-05-23
    Description: Reconstructing ancient communities depends on how accurately fossil assemblages retain information about living populations. We report a high level of fidelity between modern bone assemblages and living populations based on a 40-year study of the Amboseli ecosystem in southern Kenya. Relative abundance of 15 herbivorous species recorded in the bone assemblage accurately tracks the living populations through major changes in community composition and habitat over intervals as short as 5 years. The aggregated bone sample provides an accurate record of community structure time-averaged over four decades. These results lay the groundwork for integrating paleobiological and contemporary ecological studies across evolutionary and ecological time scales. Bone surveys also provide a useful method of assessing population changes and community structure for modern vertebrates.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Western, David -- Behrensmeyer, Anna K -- New York, N.Y. -- Science. 2009 May 22;324(5930):1061-4. doi: 10.1126/science.1171155.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉African Conservation Center, Box 62844, Nairobi, Kenya. dwestern@africaonline.co.ke〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19461002" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Biodiversity ; Body Size ; *Bone and Bones ; *Ecosystem ; Fossils ; Kenya ; Population Dynamics ; Regression Analysis ; Statistics, Nonparametric ; *Vertebrates
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2009-05-16
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Penuelas, Josep -- Rutishauser, This -- Filella, Iolanda -- New York, N.Y. -- Science. 2009 May 15;324(5929):887-8. doi: 10.1126/science.1173004.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Global Ecology Unit, Center for Ecological Research and Forestry Applications (CREAF-CEAB-CSIC), Universitat Autonoma de Barcelona, 08193 Bellaterra (Barcelona), Spain. josep.penuelas@uab.cat〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19443770" target="_blank"〉PubMed〈/a〉
    Keywords: Atmosphere/chemistry ; Biophysical Phenomena ; Carbon Dioxide/analysis/metabolism ; *Climate ; *Ecosystem ; *Greenhouse Effect ; Organic Chemicals/analysis/metabolism ; *Plant Development ; Plant Leaves/*growth & development/metabolism ; Plants/metabolism ; *Seasons ; Temperature
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  • 26
    Publication Date: 2009-04-18
    Description: Oxygen deprivation is rapidly deleterious for most organisms. However, Caenorhabditis elegans has developed the ability to survive anoxia for at least 48 hours. Mutations in the DAF-2/DAF-16 insulin-like signaling pathway promote such survival. We describe a pathway involving the HYL-2 ceramide synthase that acts independently of DAF-2. Loss of the ceramide synthase gene hyl-2 results in increased sensitivity of C. elegans to anoxia. C. elegans has two ceramide synthases, hyl-1 and hyl-2, that participate in ceramide biogenesis and affect its ability to survive anoxic conditions. In contrast to hyl-2(lf) mutants, hyl-1(lf) mutants are more resistant to anoxia than normal animals. HYL-1 and HYL-2 have complementary specificities for fatty acyl chains. These data indicate that specific ceramides produced by HYL-2 confer resistance to anoxia.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Menuz, Vincent -- Howell, Kate S -- Gentina, Sebastien -- Epstein, Sharon -- Riezman, Isabelle -- Fornallaz-Mulhauser, Monique -- Hengartner, Michael O -- Gomez, Marie -- Riezman, Howard -- Martinou, Jean-Claude -- New York, N.Y. -- Science. 2009 Apr 17;324(5925):381-4. doi: 10.1126/science.1168532.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cell Biology, University of Geneva, CH-1211 Geneva 4, Switzerland.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19372430" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Apoptosis ; Caenorhabditis elegans/cytology/genetics/*physiology ; Caenorhabditis elegans Proteins/*genetics/*metabolism ; *Cell Hypoxia ; Ceramides/biosynthesis/*physiology ; Gene Deletion ; Genes, Helminth ; Mutation ; Oxidoreductases/*genetics/*metabolism ; Oxygen/*physiology ; Receptor, Insulin/genetics/metabolism ; Saccharomyces cerevisiae/genetics/growth & development/physiology ; Sphingomyelins/biosynthesis/physiology ; Substrate Specificity ; Transformation, Genetic ; Transgenes
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  • 27
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2009-09-05
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pennisi, Elizabeth -- New York, N.Y. -- Science. 2009 Sep 4;325(5945):1196-9. doi: 10.1126/science.325_1196.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19729633" target="_blank"〉PubMed〈/a〉
    Keywords: Altruism ; Animals ; Bacteriophages/physiology ; *Biological Evolution ; Competitive Behavior ; *Cooperative Behavior ; Dictyostelium/physiology ; Family ; Game Theory ; Games, Experimental ; Humans ; Mutation ; Pseudomonas aeruginosa/physiology ; Punishment ; Quorum Sensing ; Reward ; Selection, Genetic ; *Social Behavior ; Warfare
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  • 28
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2009-02-21
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Stokstad, Erik -- New York, N.Y. -- Science. 2009 Feb 20;323(5917):998-9. doi: 10.1126/science.323.5917.998b.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19229008" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Birds ; *Conservation of Natural Resources ; *Ecosystem ; Extinction, Biological ; Population Dynamics ; United States
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  • 29
    Publication Date: 2009-10-08
    Description: A diverse assemblage of large mammals is spatially and stratigraphically associated with Ardipithecus ramidus at Aramis. The most common species are tragelaphine antelope and colobine monkeys. Analyses of their postcranial remains situate them in a closed habitat. Assessment of dental mesowear, microwear, and stable isotopes from these and a wider range of abundant associated larger mammals indicates that the local habitat at Aramis was predominantly woodland. The Ar. ramidus enamel isotope values indicate a minimal C4 vegetation component in its diet (plants using the C4 photosynthetic pathway), which is consistent with predominantly forest/woodland feeding. Although the Early Pliocene Afar included a range of environments, and the local environment at Aramis and its vicinity ranged from forests to wooded grasslands, the integration of available physical and biological evidence establishes Ar. ramidus as a denizen of the closed habitats along this continuum.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉White, Tim D -- Ambrose, Stanley H -- Suwa, Gen -- Su, Denise F -- DeGusta, David -- Bernor, Raymond L -- Boisserie, Jean-Renaud -- Brunet, Michel -- Delson, Eric -- Frost, Stephen -- Garcia, Nuria -- Giaourtsakis, Ioannis X -- Haile-Selassie, Yohannes -- Howell, F Clark -- Lehmann, Thomas -- Likius, Andossa -- Pehlevan, Cesur -- Saegusa, Haruo -- Semprebon, Gina -- Teaford, Mark -- Vrba, Elisabeth -- New York, N.Y. -- Science. 2009 Oct 2;326(5949):87-93.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Human Evolution Research Center and Department of Integrative Biology, 3101 Valley Life Sciences Building, University of California, Berkeley, CA 94720, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19810193" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Biodiversity ; Cercopithecidae/anatomy & histology ; Diet ; *Ecosystem ; Environment ; Ethiopia ; *Fossils ; *Hominidae/classification ; Mammals/anatomy & histology/classification ; Paleodontology ; Plants ; Population Density ; Tooth/anatomy & histology ; Trees
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  • 30
    Publication Date: 2009-03-17
    Description: The YODA (YDA) mitogen-activated protein kinase pathway promotes elongation of the Arabidopsis zygote and development of its basal daughter cell into the extra-embryonic suspensor. Here, we show that the interleukin-1 receptor-associated kinase (IRAK)/Pelle-like kinase gene SHORT SUSPENSOR (SSP) regulates this pathway through a previously unknown parent-of-origin effect. SSP transcripts are produced in mature pollen but do not appear to be translated. Instead, they are delivered via the sperm cells to the zygote and the endosperm, where SSP protein transiently accumulates. Ectopic expression of SSP protein in the leaf epidermis is sufficient to activate YDA-dependent signaling. We propose that SSP protein produced from paternal transcripts upon fertilization triggers zygotic YDA activity, providing an essential temporal cue for the regulation of the asymmetric first division.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bayer, Martin -- Nawy, Tal -- Giglione, Carmela -- Galli, Mary -- Meinnel, Thierry -- Lukowitz, Wolfgang -- New York, N.Y. -- Science. 2009 Mar 13;323(5920):1485-8. doi: 10.1126/science.1167784.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19286558" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Motifs ; Arabidopsis/*embryology/*genetics/metabolism ; Arabidopsis Proteins/*metabolism ; Biocatalysis ; Catalytic Domain ; Cell Division ; Crosses, Genetic ; *Gene Expression Regulation, Plant ; Genomic Imprinting ; Interleukin-1 Receptor-Associated Kinases/chemistry/*genetics/*metabolism ; MAP Kinase Kinase Kinases/*metabolism ; MAP Kinase Signaling System ; Mutation ; Plants, Genetically Modified ; Pollen/metabolism ; Protein Binding ; Protein Structure, Tertiary ; RNA, Messenger/genetics/metabolism ; Recombinant Fusion Proteins ; Seeds/growth & development/metabolism ; Transcription, Genetic
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  • 31
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2009-01-10
    Description: Histone deacetylase 4 (HDAC4) shuttles between the nucleus and cytoplasm and serves as a nuclear co-repressor that regulates bone and muscle development. We report that HDAC4 regulates the survival of retinal neurons in the mouse in normal and pathological conditions. Reduction in HDAC4 expression during normal retinal development led to apoptosis of rod photoreceptors and bipolar (BP) interneurons, whereas overexpression reduced naturally occurring cell death of the BP cells. HDAC4 overexpression in a mouse model of retinal degeneration prolonged photoreceptor survival. The survival effect was due to the activity of HDAC4 in the cytoplasm and relied at least partly on the activity of hypoxia-inducible factor 1alpha (HIF1alpha). These data provide evidence that HDAC4 plays an important role in promoting the survival of retinal neurons.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3339762/" 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/PMC3339762/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chen, Bo -- Cepko, Constance L -- EYO 14466/PHS HHS/ -- R01 EY014466/EY/NEI NIH HHS/ -- R01 EY014466-05/EY/NEI NIH HHS/ -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2009 Jan 9;323(5911):256-9. doi: 10.1126/science.1166226.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Genetics and Howard Hughes Medical Institute, Harvard Medical School, 77 Avenue Louis Pasteur, Boston, MA 02115, USA. bochen@genetics.med.harvard.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19131628" target="_blank"〉PubMed〈/a〉
    Keywords: Acetylation ; Animals ; Apoptosis ; Cell Nucleus/enzymology ; Cell Survival ; Cytoplasm/enzymology ; Electroporation ; Histone Deacetylases/genetics/*metabolism ; Hypoxia-Inducible Factor 1, alpha Subunit/metabolism ; Mice ; Mutation ; Retina/cytology/*enzymology ; Retinal Degeneration/*enzymology/pathology ; Retinal Neurons/enzymology/*physiology ; Retinal Rod Photoreceptor Cells/enzymology/*physiology ; Rhodopsin/genetics/metabolism ; Transfection
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  • 32
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2009-05-09
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Jacoby, Charles A -- Frazer, Thomas K -- New York, N.Y. -- Science. 2009 May 8;324(5928):723-4; author reply 724-5. doi: 10.1126/science.324_723b.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉School of Forest Resources and Conservation, University of Florida, Gainesville, FL 32653, USA. cajacoby@ufl.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19423801" target="_blank"〉PubMed〈/a〉
    Keywords: *Ecosystem ; *Eutrophication ; *Fresh Water/chemistry ; *Nitrogen/analysis ; *Phosphorus/analysis
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  • 33
    Publication Date: 2009-03-28
    Description: Precise wiring of the nervous system depends on coordinating the action of conserved families of proteins that direct axons to their appropriate targets. Slit-roundabout repulsion and netrin-deleted in colorectal cancer (DCC) (frazzled) attraction must be tightly regulated to control midline axon guidance in vertebrates and invertebrates, but the mechanism mediating this regulation is poorly defined. Here, we show that the Fra receptor has two genetically separable functions in regulating midline guidance in Drosophila. First, Fra mediates canonical chemoattraction in response to netrin, and, second, it functions independently of netrin to activate commissureless transcription, allowing attraction to be coupled to the down-regulation of repulsion in precrossing commissural axons.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4078765/" 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/PMC4078765/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Yang, Long -- Garbe, David S -- Bashaw, Greg J -- NS046333/NS/NINDS NIH HHS/ -- NS054739/NS/NINDS NIH HHS/ -- R01 NS046333/NS/NINDS NIH HHS/ -- R01 NS046333-07/NS/NINDS NIH HHS/ -- R01 NS054739/NS/NINDS NIH HHS/ -- R01 NS054739-03/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 2009 May 15;324(5929):944-7. doi: 10.1126/science.1171320. Epub 2009 Mar 26.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Neuroscience, University of Pennsylvania School of Medicine, 1113 BRB2/3, 421 Curie Boulevard, Philadelphia, PA 19104, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19325078" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Axons/*physiology ; Drosophila Proteins/*genetics/metabolism ; Drosophila melanogaster/embryology/*genetics/metabolism ; *Gene Expression Regulation, Developmental ; Membrane Proteins/*genetics/metabolism ; Mutation ; Nerve Growth Factors/metabolism ; Nerve Tissue Proteins/genetics/metabolism ; Nervous System/embryology/growth & development ; Neurons/*physiology ; RNA, Messenger/genetics/metabolism ; Receptors, Cell Surface/genetics/*metabolism ; Receptors, Immunologic/genetics ; Signal Transduction ; Transcription, Genetic ; *Transcriptional Activation
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  • 34
    Publication Date: 2009-04-04
    Description: Mitochondria continuously undergo two opposing processes, fission and fusion. The disruption of this dynamic equilibrium may herald cell injury or death and may contribute to developmental and neurodegenerative disorders. Nitric oxide functions as a signaling molecule, but in excess it mediates neuronal injury, in part via mitochondrial fission or fragmentation. However, the underlying mechanism for nitric oxide-induced pathological fission remains unclear. We found that nitric oxide produced in response to beta-amyloid protein, thought to be a key mediator of Alzheimer's disease, triggered mitochondrial fission, synaptic loss, and neuronal damage, in part via S-nitrosylation of dynamin-related protein 1 (forming SNO-Drp1). Preventing nitrosylation of Drp1 by cysteine mutation abrogated these neurotoxic events. SNO-Drp1 is increased in brains of human Alzheimer's disease patients and may thus contribute to the pathogenesis of neurodegeneration.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2823371/" 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/PMC2823371/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cho, Dong-Hyung -- Nakamura, Tomohiro -- Fang, Jianguo -- Cieplak, Piotr -- Godzik, Adam -- Gu, Zezong -- Lipton, Stuart A -- P01 ES016738/ES/NIEHS NIH HHS/ -- P01 ES016738-01/ES/NIEHS NIH HHS/ -- P01 ES016738-010003/ES/NIEHS NIH HHS/ -- P01 ES016738-02/ES/NIEHS NIH HHS/ -- P01 ES016738-020003/ES/NIEHS NIH HHS/ -- P01 HD029587/HD/NICHD NIH HHS/ -- P01 HD029587-16/HD/NICHD NIH HHS/ -- P01 HD29587/HD/NICHD NIH HHS/ -- P30 NS057096/NS/NINDS NIH HHS/ -- P30 NS057096-04/NS/NINDS NIH HHS/ -- R01 EY005477/EY/NEI NIH HHS/ -- R01 EY005477-25/EY/NEI NIH HHS/ -- R01 EY05477/EY/NEI NIH HHS/ -- New York, N.Y. -- Science. 2009 Apr 3;324(5923):102-5. doi: 10.1126/science.1171091.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Center for Neuroscience, Aging, and Stem Cell Research, Burnham Institute for Medical Research, 10901 North Torrey Pines Road, La Jolla, CA 92037, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19342591" target="_blank"〉PubMed〈/a〉
    Keywords: Alzheimer Disease/metabolism/pathology ; Amino Acid Motifs ; Amyloid beta-Peptides/*metabolism/pharmacology ; Animals ; Cell Line ; Cell Line, Tumor ; Cerebral Cortex/cytology ; Cysteine/analogs & derivatives/genetics/metabolism/pharmacology ; Female ; GTP Phosphohydrolases/chemistry/*metabolism ; Humans ; Male ; Mice ; Mice, Transgenic ; Microtubule-Associated Proteins/chemistry/*metabolism ; Mitochondria/drug effects/physiology/*ultrastructure ; Mitochondrial Proteins/chemistry/*metabolism ; Models, Molecular ; Mutation ; Neurons/drug effects/*ultrastructure ; Nitric Oxide/*metabolism ; Peptide Fragments/metabolism/pharmacology ; Protein Multimerization ; Protein Structure, Tertiary ; S-Nitrosothiols/pharmacology
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  • 35
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2009-06-23
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Laybourn-Parry, Johanna -- New York, N.Y. -- Science. 2009 Jun 19;324(5934):1521-2. doi: 10.1126/science.1173645.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute of Antarctic and Southern Ocean Studies, University of Tasmania, Hobart, Tasmania 7001, Australia. Jo.Laybourn-Parry@utas.edu.au〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19541982" target="_blank"〉PubMed〈/a〉
    Keywords: Antarctic Regions ; Arctic Regions ; Biodiversity ; Carbon/metabolism ; *Cold Temperature ; *Ecosystem ; *Water Microbiology
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  • 36
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2009-12-08
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kutz, Susan J -- Dobson, Andy P -- Hoberg, Eric P -- New York, N.Y. -- Science. 2009 Nov 27;326(5957):1187-8. doi: 10.1126/science.326.5957.1187-b.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19965449" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Arctic Regions/epidemiology ; *Climate Change ; *Ecosystem ; Host-Parasite Interactions ; Parasites/growth & development/*physiology ; Parasitic Diseases, Animal/epidemiology/parasitology/transmission ; Population Dynamics
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  • 37
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2009-05-02
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wijnen, Herman -- R01 GM078339/GM/NIGMS NIH HHS/ -- R01 GM078339-03/GM/NIGMS NIH HHS/ -- R01 GM78839/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2009 May 1;324(5927):598-9. doi: 10.1126/science.1174132.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biology, University of Virginia, Charlottesville, VA 22904, USA. hw9u@virginai.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19407188" target="_blank"〉PubMed〈/a〉
    Keywords: ARNTL Transcription Factors ; Acetylation ; Acrylamides/pharmacology ; Animals ; Basic Helix-Loop-Helix Transcription Factors/genetics/metabolism ; *Biological Clocks ; CLOCK Proteins ; *Circadian Rhythm ; Cytokines/antagonists & inhibitors/genetics/*metabolism ; *Feedback, Physiological ; Gene Expression Regulation ; Mice ; Mutation ; NAD/*metabolism ; Nicotinamide Phosphoribosyltransferase/antagonists & ; inhibitors/genetics/*metabolism ; Piperidines/pharmacology ; Sirtuin 1 ; Sirtuins/*metabolism ; Trans-Activators/genetics/metabolism ; Transcription Factors/genetics/metabolism ; Transcription, Genetic
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  • 38
    Publication Date: 2009-03-07
    Description: Amazon forests are a key but poorly understood component of the global carbon cycle. If, as anticipated, they dry this century, they might accelerate climate change through carbon losses and changed surface energy balances. We used records from multiple long-term monitoring plots across Amazonia to assess forest responses to the intense 2005 drought, a possible analog of future events. Affected forest lost biomass, reversing a large long-term carbon sink, with the greatest impacts observed where the dry season was unusually intense. Relative to pre-2005 conditions, forest subjected to a 100-millimeter increase in water deficit lost 5.3 megagrams of aboveground biomass of carbon per hectare. The drought had a total biomass carbon impact of 1.2 to 1.6 petagrams (1.2 x 10(15) to 1.6 x 10(15) grams). Amazon forests therefore appear vulnerable to increasing moisture stress, with the potential for large carbon losses to exert feedback on climate change.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Phillips, Oliver L -- Aragao, Luiz E O C -- Lewis, Simon L -- Fisher, Joshua B -- Lloyd, Jon -- Lopez-Gonzalez, Gabriela -- Malhi, Yadvinder -- Monteagudo, Abel -- Peacock, Julie -- Quesada, Carlos A -- van der Heijden, Geertje -- Almeida, Samuel -- Amaral, Ieda -- Arroyo, Luzmila -- Aymard, Gerardo -- Baker, Tim R -- Banki, Olaf -- Blanc, Lilian -- Bonal, Damien -- Brando, Paulo -- Chave, Jerome -- de Oliveira, Atila Cristina Alves -- Cardozo, Nallaret Davila -- Czimczik, Claudia I -- Feldpausch, Ted R -- Freitas, Maria Aparecida -- Gloor, Emanuel -- Higuchi, Niro -- Jimenez, Eliana -- Lloyd, Gareth -- Meir, Patrick -- Mendoza, Casimiro -- Morel, Alexandra -- Neill, David A -- Nepstad, Daniel -- Patino, Sandra -- Penuela, Maria Cristina -- Prieto, Adriana -- Ramirez, Fredy -- Schwarz, Michael -- Silva, Javier -- Silveira, Marcos -- Thomas, Anne Sota -- Steege, Hans Ter -- Stropp, Juliana -- Vasquez, Rodolfo -- Zelazowski, Przemyslaw -- Alvarez Davila, Esteban -- Andelman, Sandy -- Andrade, Ana -- Chao, Kuo-Jung -- Erwin, Terry -- Di Fiore, Anthony -- Honorio C, Euridice -- Keeling, Helen -- Killeen, Tim J -- Laurance, William F -- Pena Cruz, Antonio -- Pitman, Nigel C A -- Nunez Vargas, Percy -- Ramirez-Angulo, Hirma -- Rudas, Agustin -- Salamao, Rafael -- Silva, Natalino -- Terborgh, John -- Torres-Lezama, Armando -- New York, N.Y. -- Science. 2009 Mar 6;323(5919):1344-7. doi: 10.1126/science.1164033.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Ecology and Global Change, School of Geography, University of Leeds, Leeds LS2 9JT, UK. o.phillips@leeds.ac.uk〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19265020" target="_blank"〉PubMed〈/a〉
    Keywords: Atmosphere ; *Biomass ; Brazil ; Carbon ; Carbon Dioxide ; Climate ; *Droughts ; *Ecosystem ; South America ; *Trees/growth & development ; Tropical Climate
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  • 39
    Publication Date: 2009-01-20
    Description: Like many species, the model plant Arabidopsis thaliana exhibits multiple different life histories in natural environments. We grew mutants impaired in different signaling pathways in field experiments across the species' native European range in order to dissect the mechanisms underlying this variation. Unexpectedly, mutational loss at loci implicated in the cold requirement for flowering had little effect on life history except in late-summer cohorts. A genetically informed photothermal model of progression toward flowering explained most of the observed variation and predicted an abrupt transition from autumn flowering to spring flowering in late-summer germinants. Environmental signals control the timing of this transition, creating a critical window of acute sensitivity to genetic and climatic change that may be common for seasonally regulated life history traits.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wilczek, Amity M -- Roe, Judith L -- Knapp, Mary C -- Cooper, Martha D -- Lopez-Gallego, Cristina -- Martin, Laura J -- Muir, Christopher D -- Sim, Sheina -- Walker, Alexis -- Anderson, Jillian -- Egan, J Franklin -- Moyers, Brook T -- Petipas, Renee -- Giakountis, Antonis -- Charbit, Erika -- Coupland, George -- Welch, Stephen M -- Schmitt, Johanna -- New York, N.Y. -- Science. 2009 Feb 13;323(5916):930-4. doi: 10.1126/science.1165826. Epub 2009 Jan 15.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Ecology and Evolutionary Biology, Brown University, Providence, RI 02912, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19150810" target="_blank"〉PubMed〈/a〉
    Keywords: Adaptation, Physiological ; Arabidopsis/*genetics/*growth & development ; Environment ; Flowers/growth & development ; Mutation ; Photoperiod ; Seasons ; Signal Transduction
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  • 40
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2009-10-17
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Fulweiler, Robinson W -- New York, N.Y. -- Science. 2009 Oct 16;326(5951):377-8. doi: 10.1126/science.1181129.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Earth Sciences, Boston University, Boston, MA 02215, USA. rwf@bu.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19833949" target="_blank"〉PubMed〈/a〉
    Keywords: Archaea/growth & development/*metabolism ; Bacteria, Anaerobic/growth & development/*metabolism ; Cold Temperature ; Deltaproteobacteria/growth & development/*metabolism ; *Ecosystem ; Geologic Sediments/*microbiology ; Mass Spectrometry/methods ; Methane/metabolism ; *Nitrogen Fixation ; Nitrogen Isotopes/metabolism ; Oxidation-Reduction ; *Seawater/microbiology ; Sulfates/metabolism ; Symbiosis
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  • 41
    Publication Date: 2009-12-08
    Description: Bacteria-mediated acquisition of atmospheric N2 serves as a critical source of nitrogen in terrestrial ecosystems. Here we reveal that symbiotic nitrogen fixation facilitates the cultivation of specialized fungal crops by leaf-cutter ants. By using acetylene reduction and stable isotope experiments, we demonstrated that N2 fixation occurred in the fungus gardens of eight leaf-cutter ant species and, further, that this fixed nitrogen was incorporated into ant biomass. Symbiotic N2-fixing bacteria were consistently isolated from the fungus gardens of 80 leaf-cutter ant colonies collected in Argentina, Costa Rica, and Panama. The discovery of N2 fixation within the leaf-cutter ant-microbe symbiosis reveals a previously unrecognized nitrogen source in neotropical ecosystems.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pinto-Tomas, Adrian A -- Anderson, Mark A -- Suen, Garret -- Stevenson, David M -- Chu, Fiona S T -- Cleland, W Wallace -- Weimer, Paul J -- Currie, Cameron R -- GM 18938/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2009 Nov 20;326(5956):1120-3. doi: 10.1126/science.1173036.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Bacteriology, University of Wisconsin-Madison, 1550 Linden Drive, Madison, WI 53706, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19965433" target="_blank"〉PubMed〈/a〉
    Keywords: Acetylene/metabolism ; Animals ; Ants/metabolism/microbiology/*physiology ; Argentina ; Costa Rica ; *Ecosystem ; Fungi/growth & development/*physiology ; Klebsiella/isolation & purification/*metabolism ; Molecular Sequence Data ; Nitrogen/analysis/metabolism ; *Nitrogen Fixation ; Oxidation-Reduction ; Panama ; Pantoea/isolation & purification/*metabolism ; Phylogeny ; Plant Leaves/chemistry ; *Symbiosis
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  • 42
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2009-11-07
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Willis, Kathy J -- Bhagwat, Shonil A -- New York, N.Y. -- Science. 2009 Nov 6;326(5954):806-7. doi: 10.1126/science.1178838.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Long-Term Ecology Laboratory, Oxford University Centre for the Environment, South Parks Road, Oxford, OX1 3QY, UK. kathy.willis@ouce.ox.ac.uk〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19892969" target="_blank"〉PubMed〈/a〉
    Keywords: Africa ; Animals ; *Biodiversity ; Birds ; Butterflies ; *Climate Change ; Conservation of Natural Resources ; *Ecosystem ; Extinction, Biological ; Plants ; Population Dynamics ; South America ; Trees ; Tropical Climate
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  • 43
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2009-08-01
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Stone, Richard -- New York, N.Y. -- Science. 2009 Jul 31;325(5940):556-8. doi: 10.1126/science.325_556.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19644103" target="_blank"〉PubMed〈/a〉
    Keywords: China ; Conservation of Natural Resources ; *Ecosystem ; *Forestry/economics/methods ; Government Regulation ; Public Policy ; *Trees
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  • 44
    Publication Date: 2009-12-19
    Description: The evolution of cis regulatory elements (enhancers) of developmentally regulated genes plays a large role in the evolution of animal morphology. However, the mutational path of enhancer evolution--the number, origin, effect, and order of mutations that alter enhancer function--has not been elucidated. Here, we localized a suite of substitutions in a modular enhancer of the ebony locus responsible for adaptive melanism in a Ugandan Drosophila population. We show that at least five mutations with varied effects arose recently from a combination of standing variation and new mutations and combined to create an allele of large phenotypic effect. We underscore how enhancers are distinct macromolecular entities, subject to fundamentally different, and generally more relaxed, functional constraints relative to protein sequences.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3363996/" 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/PMC3363996/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rebeiz, Mark -- Pool, John E -- Kassner, Victoria A -- Aquadro, Charles F -- Carroll, Sean B -- F32GM78972/GM/NIGMS NIH HHS/ -- F32HG004182/HG/NHGRI NIH HHS/ -- GM036431/GM/NIGMS NIH HHS/ -- R01 GM036431/GM/NIGMS NIH HHS/ -- R01 GM036431-22/GM/NIGMS NIH HHS/ -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2009 Dec 18;326(5960):1663-7. doi: 10.1126/science.1178357.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute and Laboratory of Molecular Biology, University of Wisconsin, Madison, WI 53706, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20019281" target="_blank"〉PubMed〈/a〉
    Keywords: Abdomen ; Adaptation, Biological ; Alleles ; Animals ; Animals, Genetically Modified ; *Biological Evolution ; DNA-Binding Proteins/*genetics ; Drosophila Proteins/*genetics ; Drosophila melanogaster/*genetics/growth & development/physiology ; *Enhancer Elements, Genetic ; Evolution, Molecular ; Gene Expression Regulation, Developmental ; Haplotypes ; Molecular Sequence Data ; Mutation ; Pigmentation/*genetics ; Polymorphism, Genetic ; Uganda
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  • 45
    Publication Date: 2009-01-20
    Description: The nematode Caenorhabditis elegans responds to pathogenic bacteria with conserved innate immune responses and pathogen avoidance behaviors. We investigated natural variation in C. elegans resistance to pathogen infection. With the use of quantitative genetic analysis, we determined that the pathogen susceptibility difference between the laboratory wild-type strain N2 and the wild isolate CB4856 is caused by a polymorphism in the npr-1 gene, which encodes a homolog of the mammalian neuropeptide Y receptor. We show that the mechanism of NPR-1-mediated pathogen resistance is through oxygen-dependent behavioral avoidance rather than direct regulation of innate immunity. For C. elegans, bacteria represent food but also a potential source of infection. Our data underscore the importance of behavioral responses to oxygen levels in finding an optimal balance between these potentially conflicting cues.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2748219/" 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/PMC2748219/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Reddy, Kirthi C -- Andersen, Erik C -- Kruglyak, Leonid -- Kim, Dennis H -- GM071508/GM/NIGMS NIH HHS/ -- GM084477/GM/NIGMS NIH HHS/ -- HG004321/HG/NHGRI NIH HHS/ -- R01 GM084477/GM/NIGMS NIH HHS/ -- R01 GM084477-02/GM/NIGMS NIH HHS/ -- R01 HG004321/HG/NHGRI NIH HHS/ -- R01 HG004321-02/HG/NHGRI NIH HHS/ -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2009 Jan 16;323(5912):382-4. doi: 10.1126/science.1166527.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19150845" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Behavior, Animal ; Caenorhabditis elegans/*genetics/immunology/*microbiology/physiology ; Caenorhabditis elegans Proteins/*genetics/*physiology ; Cues ; Genes, Helminth ; Immunity, Innate ; Movement ; Mutation ; Oxygen/physiology ; Polymorphism, Genetic ; Pseudomonas aeruginosa/*pathogenicity/physiology ; Receptors, Neuropeptide Y/*genetics/*physiology
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  • 46
    Publication Date: 2009-12-08
    Description: The interactive effects of rising atmospheric carbon dioxide (CO2) concentrations and elevated nitrogen (N) deposition on plant diversity are not well understood. This is of concern because both factors are important components of global environmental change and because each might suppress diversity, with their combined effects possibly additive or synergistic. In a long-term open-air experiment, grassland assemblages planted with 16 species were grown under all combinations of ambient and elevated CO2 and ambient and elevated N. Over 10 years, elevated N reduced species richness by 16% at ambient CO2 but by just 8% at elevated CO2. This resulted from multiple effects of CO2 and N on plant traits and soil resources that altered competitive interactions among species. Elevated CO2 thus ameliorated the negative effects of N enrichment on species richness.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Reich, Peter B -- New York, N.Y. -- Science. 2009 Dec 4;326(5958):1399-402. doi: 10.1126/science.1178820.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Forest Resources, University of Minnesota, 1530 Cleveland Avenue North, St. Paul, MN 55108, USA. preich@umn.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19965757" target="_blank"〉PubMed〈/a〉
    Keywords: Anemone/growth & development/metabolism ; Asclepias/genetics/metabolism ; Asteraceae/growth & development/metabolism ; *Atmosphere ; *Biodiversity ; Biomass ; *Carbon Dioxide ; *Ecosystem ; Fabaceae/growth & development/metabolism ; Light ; Minnesota ; *Nitrogen/metabolism ; Nitrogen Fixation ; Plant Development ; *Plants/metabolism ; Poaceae/growth & development/metabolism ; Soil/analysis ; Water/analysis
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  • 47
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2009-10-03
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Portman, Michelle E -- New York, N.Y. -- Science. 2009 Oct 2;326(5949):45; author reply 45-6. doi: 10.1126/science.326_45a.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Marine Policy Center of the Woods Hole Oceanographic Institution, Woods Hole, MA 02543, USA. mportman@whoi.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19797643" target="_blank"〉PubMed〈/a〉
    Keywords: *Ecosystem ; *Government Regulation ; Legislation as Topic ; Oceans and Seas ; *Public Policy ; United States ; United States Government Agencies
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  • 48
    Publication Date: 2009-08-01
    Description: After a long history of overexploitation, increasing efforts to restore marine ecosystems and rebuild fisheries are under way. Here, we analyze current trends from a fisheries and conservation perspective. In 5 of 10 well-studied ecosystems, the average exploitation rate has recently declined and is now at or below the rate predicted to achieve maximum sustainable yield for seven systems. Yet 63% of assessed fish stocks worldwide still require rebuilding, and even lower exploitation rates are needed to reverse the collapse of vulnerable species. Combined fisheries and conservation objectives can be achieved by merging diverse management actions, including catch restrictions, gear modification, and closed areas, depending on local context. Impacts of international fleets and the lack of alternatives to fishing complicate prospects for rebuilding fisheries in many poorer regions, highlighting the need for a global perspective on rebuilding marine resources.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Worm, Boris -- Hilborn, Ray -- Baum, Julia K -- Branch, Trevor A -- Collie, Jeremy S -- Costello, Christopher -- Fogarty, Michael J -- Fulton, Elizabeth A -- Hutchings, Jeffrey A -- Jennings, Simon -- Jensen, Olaf P -- Lotze, Heike K -- Mace, Pamela M -- McClanahan, Tim R -- Minto, Coilin -- Palumbi, Stephen R -- Parma, Ana M -- Ricard, Daniel -- Rosenberg, Andrew A -- Watson, Reg -- Zeller, Dirk -- New York, N.Y. -- Science. 2009 Jul 31;325(5940):578-85. doi: 10.1126/science.1173146.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Biology Department, Dalhousie University, Halifax, NS B3H 4J1, Canada. bworm@dal.ca〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19644114" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Biodiversity ; Biomass ; *Conservation of Natural Resources ; *Ecosystem ; *Fisheries/methods ; *Fishes/anatomy & histology ; Internationality ; Marine Biology ; Models, Biological ; Oceans and Seas ; Population Dynamics
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  • 49
    Publication Date: 2009-11-07
    Description: The LKB1 tumor suppressor is a protein kinase that controls the activity of adenosine monophosphate-activated protein kinase (AMPK). LKB1 activity is regulated by the pseudokinase STRADalpha and the scaffolding protein MO25alpha through an unknown, phosphorylation-independent, mechanism. We describe the structure of the core heterotrimeric LKB1-STRADalpha-MO25alpha complex, revealing an unusual allosteric mechanism of LKB1 activation. STRADalpha adopts a closed conformation typical of active protein kinases and binds LKB1 as a pseudosubstrate. STRADalpha and MO25alpha promote the active conformation of LKB1, which is stabilized by MO25alpha interacting with the LKB1 activation loop. This previously undescribed mechanism of kinase activation may be relevant to understanding the evolution of other pseudokinases. The structure also reveals how mutations found in Peutz-Jeghers syndrome and in various sporadic cancers impair LKB1 function.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3518268/" 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/PMC3518268/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zeqiraj, Elton -- Filippi, Beatrice Maria -- Deak, Maria -- Alessi, Dario R -- van Aalten, Daan M F -- 087590/Wellcome Trust/United Kingdom -- C33794/A10969/Cancer Research UK/United Kingdom -- G0900138/Medical Research Council/United Kingdom -- MC_U127070193/Medical Research Council/United Kingdom -- Wellcome Trust/United Kingdom -- New York, N.Y. -- Science. 2009 Dec 18;326(5960):1707-11. doi: 10.1126/science.1178377. Epub 2009 Nov 5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Molecular Microbiology, College of Life Sciences, University of Dundee, Dundee DD1 5EH, Scotland.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19892943" target="_blank"〉PubMed〈/a〉
    Keywords: AMP-Activated Protein Kinases/metabolism ; Adaptor Proteins, Vesicular Transport/*chemistry/metabolism ; Allosteric Regulation ; Amino Acid Sequence ; Binding Sites ; Calcium-Binding Proteins/*chemistry/metabolism ; Crystallography, X-Ray ; Enzyme Activation ; Humans ; Models, Molecular ; Molecular Sequence Data ; Multiprotein Complexes/chemistry/metabolism ; Mutant Proteins/chemistry/metabolism ; Mutation ; Phosphorylation ; Protein Binding ; Protein Conformation ; Protein Interaction Domains and Motifs ; Protein Structure, Tertiary ; Protein-Serine-Threonine Kinases/*chemistry/metabolism
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  • 50
    Publication Date: 2009-04-04
    Description: Plants possess inducible systemic defense responses when locally infected by pathogens. Bacterial infection results in the increased accumulation of the mobile metabolite azelaic acid, a nine-carbon dicarboxylic acid, in the vascular sap of Arabidopsis that confers local and systemic resistance against the pathogen Pseudomonas syringae. Azelaic acid primes plants to accumulate salicylic acid (SA), a known defense signal, upon infection. Mutation of the AZELAIC ACID INDUCED 1 (AZI1) gene, which is induced by azelaic acid, results in the specific loss of systemic immunity triggered by pathogen or azelaic acid and of the priming of SA induction in plants. Furthermore, the predicted secreted protein AZI1 is also important for generating vascular sap that confers disease resistance. Thus, azelaic acid and AZI1 are components of plant systemic immunity involved in priming defenses.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Jung, Ho Won -- Tschaplinski, Timothy J -- Wang, Lin -- Glazebrook, Jane -- Greenberg, Jean T -- New York, N.Y. -- Science. 2009 Apr 3;324(5923):89-91. doi: 10.1126/science.1170025.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Genetics and Cell Biology, University of Chicago, 1103 East 57th Street EBC410, Chicago, IL 60637, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19342588" target="_blank"〉PubMed〈/a〉
    Keywords: Arabidopsis/genetics/*immunology/metabolism/*microbiology ; Arabidopsis Proteins/*genetics/physiology ; Dicarboxylic Acids/*metabolism/pharmacology ; Gene Expression Regulation, Plant ; *Genes, Plant ; Immunity, Innate ; Mutation ; Oligonucleotide Array Sequence Analysis ; Plant Diseases/*immunology ; Plant Leaves/immunology/metabolism ; Pseudomonas syringae/growth & development/*immunology/pathogenicity ; Salicylic Acid/metabolism ; Signal Transduction
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  • 51
    Publication Date: 2009-03-17
    Description: The climate of the western shelf of the Antarctic Peninsula (WAP) is undergoing a transition from a cold-dry polar-type climate to a warm-humid sub-Antarctic-type climate. Using three decades of satellite and field data, we document that ocean biological productivity, inferred from chlorophyll a concentration (Chl a), has significantly changed along the WAP shelf. Summertime surface Chl a (summer integrated Chl a approximately 63% of annually integrated Chl a) declined by 12% along the WAP over the past 30 years, with the largest decreases equatorward of 63 degrees S and with substantial increases in Chl a occurring farther south. The latitudinal variation in Chl a trends reflects shifting patterns of ice cover, cloud formation, and windiness affecting water-column mixing. Regional changes in phytoplankton coincide with observed changes in krill (Euphausia superba) and penguin populations.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Montes-Hugo, Martin -- Doney, Scott C -- Ducklow, Hugh W -- Fraser, William -- Martinson, Douglas -- Stammerjohn, Sharon E -- Schofield, Oscar -- New York, N.Y. -- Science. 2009 Mar 13;323(5920):1470-3. doi: 10.1126/science.1164533.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Coastal Ocean Observation Lab, Institute of Marine and Coastal Sciences, School of Environmental and Biological Sciences, Rutgers University, New Brunswick, NJ 08901, USA. montes@marine.rutgers.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19286554" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antarctic Regions ; Biomass ; Chlorophyll/*analysis ; *Cold Climate ; *Ecosystem ; Euphausiacea ; Geography ; Ice Cover ; Oceans and Seas ; Phytoplankton/cytology/*growth & development ; Population Dynamics ; Seasons ; *Seawater/chemistry ; Spheniscidae ; Temperature ; Wind
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  • 52
    Publication Date: 2009-04-18
    Description: An active microbial assemblage cycles sulfur in a sulfate-rich, ancient marine brine beneath Taylor Glacier, an outlet glacier of the East Antarctic Ice Sheet, with Fe(III) serving as the terminal electron acceptor. Isotopic measurements of sulfate, water, carbonate, and ferrous iron and functional gene analyses of adenosine 5'-phosphosulfate reductase imply that a microbial consortium facilitates a catalytic sulfur cycle. These metabolic pathways result from a limited organic carbon supply because of the absence of contemporary photosynthesis, yielding a subglacial ferrous brine that is anoxic but not sulfidic. Coupled biogeochemical processes below the glacier enable subglacial microbes to grow in extended isolation, demonstrating how analogous organic-starved systems, such as Neoproterozoic oceans, accumulated Fe(II) despite the presence of an active sulfur cycle.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mikucki, Jill A -- Pearson, Ann -- Johnston, David T -- Turchyn, Alexandra V -- Farquhar, James -- Schrag, Daniel P -- Anbar, Ariel D -- Priscu, John C -- Lee, Peter A -- New York, N.Y. -- Science. 2009 Apr 17;324(5925):397-400. doi: 10.1126/science.1167350.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Earth and Planetary Sciences, Harvard University, Cambridge, MA 02138 USA. jill.a.mikucki@dartmouth.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19372431" target="_blank"〉PubMed〈/a〉
    Keywords: Anaerobiosis ; Antarctic Regions ; Autotrophic Processes ; Bacteria/growth & development/*metabolism ; *Ecosystem ; Ferric Compounds/*metabolism ; Ferrous Compounds/*metabolism ; Heterotrophic Processes ; *Ice Cover ; Metabolic Networks and Pathways ; Molecular Sequence Data ; Oxidation-Reduction ; Oxidoreductases Acting on Sulfur Group Donors/genetics/metabolism ; Oxygen/metabolism ; Oxygen Isotopes/analysis ; Phylogeny ; Seawater/chemistry/*microbiology ; Sulfates/metabolism ; Sulfites/metabolism ; Sulfur/*metabolism
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  • 53
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2009-08-01
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Stokstad, Erik -- New York, N.Y. -- Science. 2009 Jul 31;325(5940):525. doi: 10.1126/science.325_525.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19644081" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Crassostrea/parasitology/physiology ; *Ecosystem ; Haplosporida/pathogenicity ; Population Growth ; *Rivers ; Virginia
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  • 54
    Publication Date: 2009-12-08
    Description: Environmental perturbations during mass extinctions were likely manifested differently in epicontinental seas than in open-ocean-facing habitats of comparable depth. Here, we present a dissection of origination and extinction in epicontinental seas versus open-ocean-facing coastal regions in the Permian through Cretaceous periods, an interval through which both settings are well represented in the fossil record. Results demonstrate that extinction rates were significantly higher in open-ocean settings than in epicontinental seas during major mass extinctions but not at other times and that origination rates were significantly higher in open-ocean settings for a protracted interval from the Late Jurassic through the Late Cretaceous. These patterns are manifested even when other paleogeographic and environmental variables are held fixed, indicating that epicontinental seas and open-ocean-facing coastlines carry distinct macroevolutionary signatures.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Miller, Arnold I -- Foote, Michael -- New York, N.Y. -- Science. 2009 Nov 20;326(5956):1106-9. doi: 10.1126/science.1180061.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Geology, University of Cincinnati, Post Office Box 210013, Cincinnati, OH 45221, USA. arnold.miller@uc.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19965428" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Biological Evolution ; Bivalvia ; *Ecosystem ; Environment ; *Extinction, Biological ; Geologic Sediments ; Geological Phenomena ; Kinetics ; Oceans and Seas
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  • 55
    Publication Date: 2009-05-30
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Stokstad, Erik -- New York, N.Y. -- Science. 2009 May 29;324(5931):1138-9. doi: 10.1126/science.324_1138.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19478162" target="_blank"〉PubMed〈/a〉
    Keywords: Agriculture ; Animals ; *Ecosystem ; *Environmental Restoration and Remediation ; Oceans and Seas ; *Seawater ; United States ; United States Environmental Protection Agency/*legislation & jurisprudence ; Water Pollution/prevention & control
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  • 56
    Publication Date: 2009-03-03
    Description: Mammals have single-rowed dentitions, whereas many nonmammalian vertebrates have teeth in multiple rows. Neither the molecular mechanism regulating iterative tooth initiation nor that restricting mammalian tooth development in one row is known. We found that mice lacking the transcription factor odd-skipped related-2 (Osr2) develop supernumerary teeth lingual to their molars because of expansion of the odontogenic field. Osr2 was expressed in a lingual-to-buccal gradient and restricted expression of bone morphogenetic protein 4 (Bmp4), an essential odontogenic signal, in the developing tooth mesenchyme. Expansion of odontogenic field in Osr2-deficient mice required Msx1, a feedback activator of Bmp4 expression. These findings suggest that the Bmp4-Msx1 pathway propagates mesenchymal activation for sequential tooth induction and that spatial modulation of this pathway provides a mechanism for patterning vertebrate dentition.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2650836/" 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/PMC2650836/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zhang, Zunyi -- Lan, Yu -- Chai, Yang -- Jiang, Rulang -- R01 DE013681/DE/NIDCR NIH HHS/ -- R01 DE013681-06/DE/NIDCR NIH HHS/ -- R01 DE013681-07/DE/NIDCR NIH HHS/ -- R01 DE013681-08/DE/NIDCR NIH HHS/ -- R01 DE013681-09/DE/NIDCR NIH HHS/ -- R01DE013681/DE/NIDCR NIH HHS/ -- T32DE007202/DE/NIDCR NIH HHS/ -- New York, N.Y. -- Science. 2009 Feb 27;323(5918):1232-4. doi: 10.1126/science.1167418.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Center for Oral Biology and Department of Biomedical Genetics, University of Rochester Medical Center, Rochester, NY 14642, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19251632" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bone Morphogenetic Protein 4/metabolism ; Dentition ; Epithelium/embryology/metabolism ; Gene Expression ; Gene Expression Profiling ; MSX1 Transcription Factor/genetics/*metabolism ; Mesoderm/embryology/metabolism ; Mice ; Molar/embryology ; Morphogenesis ; Mutation ; *Odontogenesis ; Tooth Germ/embryology/metabolism ; Tooth, Supernumerary/*embryology ; Transcription Factors/genetics/*metabolism
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  • 57
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2009-08-22
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rick, Torben C -- Erlandson, Jon M -- New York, N.Y. -- Science. 2009 Aug 21;325(5943):952-3. doi: 10.1126/science.1178539.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Archaeobiology Program, Department of Anthropology, National Museum of Natural History, Smithsonian Institution, Washington, DC 20013, USA. rickt@si.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19696338" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Anthropology ; Archaeology ; *Ecosystem ; *Environment ; Fisheries ; Fishes ; Humans ; Marine Biology ; Otters ; Population Dynamics ; Sea Urchins ; Shellfish
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  • 58
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2009-08-01
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Roberts, Leslie -- Stone, Richard -- Sugden, Andrew -- New York, N.Y. -- Science. 2009 Jul 31;325(5940):555. doi: 10.1126/science.325_555.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19644102" target="_blank"〉PubMed〈/a〉
    Keywords: *Conservation of Natural Resources ; *Ecology ; *Ecosystem
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  • 59
    Publication Date: 2009-04-25
    Description: The imprints of domestication and breed development on the genomes of livestock likely differ from those of companion animals. A deep draft sequence assembly of shotgun reads from a single Hereford female and comparative sequences sampled from six additional breeds were used to develop probes to interrogate 37,470 single-nucleotide polymorphisms (SNPs) in 497 cattle from 19 geographically and biologically diverse breeds. These data show that cattle have undergone a rapid recent decrease in effective population size from a very large ancestral population, possibly due to bottlenecks associated with domestication, selection, and breed formation. Domestication and artificial selection appear to have left detectable signatures of selection within the cattle genome, yet the current levels of diversity within breeds are at least as great as exists within humans.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2735092/" 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/PMC2735092/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bovine HapMap Consortium -- Gibbs, Richard A -- Taylor, Jeremy F -- Van Tassell, Curtis P -- Barendse, William -- Eversole, Kellye A -- Gill, Clare A -- Green, Ronnie D -- Hamernik, Debora L -- Kappes, Steven M -- Lien, Sigbjorn -- Matukumalli, Lakshmi K -- McEwan, John C -- Nazareth, Lynne V -- Schnabel, Robert D -- Weinstock, George M -- Wheeler, David A -- Ajmone-Marsan, Paolo -- Boettcher, Paul J -- Caetano, Alexandre R -- Garcia, Jose Fernando -- Hanotte, Olivier -- Mariani, Paola -- Skow, Loren C -- Sonstegard, Tad S -- Williams, John L -- Diallo, Boubacar -- Hailemariam, Lemecha -- Martinez, Mario L -- Morris, Chris A -- Silva, Luiz O C -- Spelman, Richard J -- Mulatu, Woudyalew -- Zhao, Keyan -- Abbey, Colette A -- Agaba, Morris -- Araujo, Flabio R -- Bunch, Rowan J -- Burton, James -- Gorni, Chiara -- Olivier, Hanotte -- Harrison, Blair E -- Luff, Bill -- Machado, Marco A -- Mwakaya, Joel -- Plastow, Graham -- Sim, Warren -- Smith, Timothy -- Thomas, Merle B -- Valentini, Alessio -- Williams, Paul -- Womack, James -- Woolliams, John A -- Liu, Yue -- Qin, Xiang -- Worley, Kim C -- Gao, Chuan -- Jiang, Huaiyang -- Moore, Stephen S -- Ren, Yanru -- Song, Xing-Zhi -- Bustamante, Carlos D -- Hernandez, Ryan D -- Muzny, Donna M -- Patil, Shobha -- San Lucas, Anthony -- Fu, Qing -- Kent, Matthew P -- Vega, Richard -- Matukumalli, Aruna -- McWilliam, Sean -- Sclep, Gert -- Bryc, Katarzyna -- Choi, Jungwoo -- Gao, Hong -- Grefenstette, John J -- Murdoch, Brenda -- Stella, Alessandra -- Villa-Angulo, Rafael -- Wright, Mark -- Aerts, Jan -- Jann, Oliver -- Negrini, Riccardo -- Goddard, Mike E -- Hayes, Ben J -- Bradley, Daniel G -- Barbosa da Silva, Marcos -- Lau, Lilian P L -- Liu, George E -- Lynn, David J -- Panzitta, Francesca -- Dodds, Ken G -- R01 GM083606/GM/NIGMS NIH HHS/ -- R01 GM083606-02/GM/NIGMS NIH HHS/ -- U54 HG003273/HG/NHGRI NIH HHS/ -- New York, N.Y. -- Science. 2009 Apr 24;324(5926):528-32. doi: 10.1126/science.1167936.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19390050" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Breeding ; Cattle/*genetics ; Female ; Gene Frequency ; *Genetic Variation ; *Genome ; Male ; Molecular Sequence Data ; Mutation ; *Polymorphism, Single Nucleotide ; Population Density
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  • 60
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2009-12-08
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zimmer, Carl -- New York, N.Y. -- Science. 2009 Dec 4;326(5958):1334-6. doi: 10.1126/science.326.5958.1334.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19965730" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Biodiversity ; *Biological Evolution ; Climate Change ; Cultural Evolution ; Ecosystem ; Evolution, Planetary ; Extinction, Biological ; Genetic Engineering ; *Genome, Human ; Human Activities ; Humans ; Mutation ; *Selection, Genetic
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  • 61
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2009-03-03
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cohen, Jon -- New York, N.Y. -- Science. 2009 Feb 27;323(5918):1156-7. doi: 10.1126/science.323.5918.1156.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19251598" target="_blank"〉PubMed〈/a〉
    Keywords: Anti-HIV Agents/*pharmacology/therapeutic use ; Biotechnology/legislation & jurisprudence ; California ; Databases, Factual/*legislation & jurisprudence ; *Drug Resistance, Viral/genetics ; HIV/*drug effects/genetics ; HIV Infections/drug therapy/virology ; Humans ; Internet ; Luxembourg ; Mutation ; Patents as Topic/*legislation & jurisprudence ; Universities/legislation & jurisprudence
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  • 62
    Publication Date: 2009-03-28
    Description: Temperature affects the physiology, behavior, and evolution of organisms. We conducted mutagenesis and screens for mutants with altered temperature preference in Drosophila melanogaster and identified a cryophilic (cold-seeking) mutant, named atsugari (atu). Reduced expression of the Drosophila ortholog of dystroglycan (DmDG) induced tolerance to cold as well as preference for the low temperature. A sustained increase in mitochondrial oxidative metabolism caused by the reduced expression of DmDG accounted for the cryophilic phenotype of the atu mutant. Although most ectothermic animals do not use metabolically produced heat to regulate body temperature, our results indicate that their thermoregulatory behavior is closely linked to rates of mitochondrial oxidative metabolism and that a mutation in a single gene can induce a sustained change in energy homeostasis and the thermal responses.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Takeuchi, Ken-Ichi -- Nakano, Yoshiro -- Kato, Utako -- Kaneda, Mizuho -- Aizu, Masako -- Awano, Wakae -- Yonemura, Shigenobu -- Kiyonaka, Shigeki -- Mori, Yasuo -- Yamamoto, Daisuke -- Umeda, Masato -- New York, N.Y. -- Science. 2009 Mar 27;323(5922):1740-3. doi: 10.1126/science.1165712.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19325118" target="_blank"〉PubMed〈/a〉
    Keywords: Adenosine Triphosphate/metabolism ; Animals ; Animals, Genetically Modified ; Body Temperature Regulation ; Calcium/metabolism ; *Cold Temperature ; Drosophila Proteins/genetics/*physiology ; Drosophila melanogaster/genetics/*physiology ; Dystroglycans/genetics/*physiology ; *Energy Metabolism ; Homeostasis ; Mitochondria/metabolism ; Mutant Proteins ; Mutation ; Oxygen Consumption ; Phenotype ; Pyruvate Dehydrogenase Complex/metabolism ; Temperature
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  • 63
    Publication Date: 2009-06-06
    Description: Knowing when and where a given protein is activated within intact animals assists in elucidating its in vivo function. With the use of a genetically encoded A-probe (activation bioprobe), we revealed that Cdc42 guanosine triphosphatase (GTPase) remains inactive within Drosophila embryos during the first two-thirds of embryogenesis. Within the central nervous system where Cdc42 activity first becomes up-regulated, individual neurons display patterns restricted to specific subcellular compartments. At both organismal and cellular levels, Cdc42's endogenous activation patterns in the wild type allow predictions of where loss-of-function phenotypes will emerge in cdc42/cdc42 mutants. Genetic tests support the importance of suppressing endogenous Cdc42 activities until needed. Thus, bioprobe-assisted analysis uncovers how ubiquitously expressed signaling proteins control cellular events through continual regulation of their activities within animals.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2729367/" 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/PMC2729367/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kamiyama, Daichi -- Chiba, Akira -- R01 MH068650-01A2/MH/NIMH NIH HHS/ -- R01 MH079432-01A1/MH/NIMH NIH HHS/ -- New York, N.Y. -- Science. 2009 Jun 5;324(5932):1338-40. doi: 10.1126/science.1170615.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biology and Miami Institute of Molecular Imaging and Computation, University of Miami, Coral Gables, FL 33146, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19498173" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Axons/ultrastructure ; Central Nervous System/embryology/enzymology ; Dendrites/ultrastructure ; Drosophila/*embryology/enzymology/genetics ; Drosophila Proteins/genetics/*metabolism ; Embryo, Nonmammalian/*enzymology ; Embryonic Development ; Enzyme Activation ; Fluorescence Resonance Energy Transfer ; Molecular Probe Techniques ; Motor Neurons/cytology/*enzymology ; Mutation ; Organogenesis ; Phenotype ; cdc42 GTP-Binding Protein/genetics/*metabolism
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  • 64
    Publication Date: 2009-07-11
    Description: John Nash showed that within a complex system, individuals are best off if they make the best decision that they can, taking into account the decisions of the other individuals. Here, we investigate whether similar principles influence the evolution of signaling networks in multicellular animals. Specifically, by analyzing a set of metazoan species we observed a striking negative correlation of genomically encoded tyrosine content with biological complexity (as measured by the number of cell types in each organism). We discuss how this observed tyrosine loss correlates with the expansion of tyrosine kinases in the evolution of the metazoan lineage and how it may relate to the optimization of signaling systems in multicellular animals. We propose that this phenomenon illustrates genome-wide adaptive evolution to accommodate beneficial genetic perturbation.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3066034/" 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/PMC3066034/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Tan, Chris Soon Heng -- Pasculescu, Adrian -- Lim, Wendell A -- Pawson, Tony -- Bader, Gary D -- Linding, Rune -- R01 GM055040/GM/NIGMS NIH HHS/ -- R01 GM055040-11/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2009 Sep 25;325(5948):1686-8. doi: 10.1126/science.1174301. Epub 2009 Jul 9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Samuel Lunenfeld Research Institute, Mount Sinai Hospital, Toronto M5G 1X5, Canada.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19589966" target="_blank"〉PubMed〈/a〉
    Keywords: Adaptation, Physiological ; Animals ; *Biological Evolution ; *Evolution, Molecular ; Fungal Proteins/chemistry/metabolism ; Glycosylation ; Humans ; Methylation ; Mutation ; Phosphorylation ; Phosphotyrosine/metabolism ; Protein Structure, Tertiary ; Protein-Tyrosine Kinases/*metabolism ; Proteins/*chemistry/*metabolism ; *Selection, Genetic ; *Signal Transduction ; Substrate Specificity ; Tyrosine/*metabolism
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  • 65
    Publication Date: 2009-02-07
    Description: Speciation often involves the evolution of incompatible gene interactions that cause sterility or lethality in hybrids between populations. These so-called hybrid incompatibilities occur between two or more functionally divergent loci. We show that the nucleoporin 160kDa (Nup160) gene of the fruitfly Drosophila simulans is incompatible with one or more factors on the D. melanogaster X chromosome, causing hybrid lethality. Nup160 encodes a nuclear pore complex protein and shows evidence of adaptive evolution. Furthermore, the protein encoded by Nup160 directly interacts with that of another hybrid lethality gene, Nup96, indicating that at least two lethal hybrid incompatibility genes have evolved as byproducts of divergent coevolution among interacting components of the Drosophila nuclear pore complex.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2826207/" 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/PMC2826207/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Tang, Shanwu -- Presgraves, Daven C -- R01 GM079543/GM/NIGMS NIH HHS/ -- R01 GM079543-01A1/GM/NIGMS NIH HHS/ -- R01-GM079543/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2009 Feb 6;323(5915):779-82. doi: 10.1126/science.1169123.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biology, University of Rochester, Rochester, NY 14627, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19197064" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Chromosome Mapping ; Crosses, Genetic ; Drosophila/*genetics/*physiology ; Drosophila Proteins/*genetics/metabolism ; Drosophila melanogaster/genetics/*physiology ; *Evolution, Molecular ; Female ; Genes, Insect ; *Genetic Speciation ; Hybridization, Genetic ; Male ; Molecular Sequence Data ; Mutation ; Nuclear Pore Complex Proteins/*genetics/metabolism ; Selection, Genetic ; X Chromosome/*genetics
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  • 66
    Publication Date: 2009-01-24
    Description: Membrane fusion between vesicles and target membranes involves the zippering of a four-helix bundle generated by constituent helices derived from target- and vesicle-soluble N-ethylmaleimide-sensitive factor attachment protein receptors (SNAREs). In neurons, the protein complexin clamps otherwise spontaneous fusion by SNARE proteins, allowing neurotransmitters and other mediators to be secreted when and where they are needed as this clamp is released. The membrane-proximal accessory helix of complexin is necessary for clamping, but its mechanism of action is unknown. Here, we present experiments using a reconstituted fusion system that suggest a simple model in which the complexin accessory helix forms an alternative four-helix bundle with the target-SNARE near the membrane, preventing the vesicle-SNARE from completing its zippering.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3736854/" 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/PMC3736854/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Giraudo, Claudio G -- Garcia-Diaz, Alejandro -- Eng, William S -- Chen, Yuhang -- Hendrickson, Wayne A -- Melia, Thomas J -- Rothman, James E -- R01 GM071458/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2009 Jan 23;323(5913):512-6. doi: 10.1126/science.1166500.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Physiology and Cellular Biophysics, Columbia University, College of Physicians and Surgeons, 1150 Saint Nicholas Avenue, Russ Berrie Building, Room 520, New York, NY 10032, USA. claudio.giraudo@yale.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19164750" target="_blank"〉PubMed〈/a〉
    Keywords: Adaptor Proteins, Vesicular Transport ; Amino Acid Motifs ; Amino Acid Sequence ; HeLa Cells ; Humans ; Hydrophobic and Hydrophilic Interactions ; *Membrane Fusion ; Models, Molecular ; Molecular Sequence Data ; Mutant Proteins/chemistry/metabolism ; Mutation ; Nerve Tissue Proteins/*chemistry/genetics/*metabolism ; Protein Binding ; Protein Structure, Secondary ; Recombinant Fusion Proteins/chemistry/metabolism ; SNARE Proteins/*chemistry/*metabolism ; Vesicle-Associated Membrane Protein 2/*chemistry/*metabolism
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  • 67
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2009-12-08
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Collins, Scott L -- New York, N.Y. -- Science. 2009 Dec 4;326(5958):1353-4. doi: 10.1126/science.1183271.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biology, University of New Mexico, Albuquerque, NM 87131, USA. scollins@sevilleta.unm.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19965744" target="_blank"〉PubMed〈/a〉
    Keywords: *Biodiversity ; *Carbon Dioxide ; *Ecosystem ; Minnesota ; *Nitrogen/metabolism ; Plant Development ; *Plants/metabolism ; Soil/analysis
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  • 68
    Publication Date: 2009-08-08
    Description: The catalytic engine of RNA interference (RNAi) is the RNA-induced silencing complex (RISC), wherein the endoribonuclease Argonaute and single-stranded small interfering RNA (siRNA) direct target mRNA cleavage. We reconstituted long double-stranded RNA- and duplex siRNA-initiated RISC activities with the use of recombinant Drosophila Dicer-2, R2D2, and Ago2 proteins. We used this core reconstitution system to purify an RNAi regulator that we term C3PO (component 3 promoter of RISC), a complex of Translin and Trax. C3PO is a Mg2+-dependent endoribonuclease that promotes RISC activation by removing siRNA passenger strand cleavage products. These studies establish an in vitro RNAi reconstitution system and identify C3PO as a key activator of the core RNAi machinery.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2855623/" 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/PMC2855623/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Liu, Ying -- Ye, Xuecheng -- Jiang, Feng -- Liang, Chunyang -- Chen, Dongmei -- Peng, Junmin -- Kinch, Lisa N -- Grishin, Nick V -- Liu, Qinghua -- AG025688/AG/NIA NIH HHS/ -- GM078163/GM/NIGMS NIH HHS/ -- GM084010/GM/NIGMS NIH HHS/ -- R01 GM078163/GM/NIGMS NIH HHS/ -- R01 GM078163-03/GM/NIGMS NIH HHS/ -- R01 GM084010/GM/NIGMS NIH HHS/ -- R01 GM084010-02/GM/NIGMS NIH HHS/ -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2009 Aug 7;325(5941):750-3. doi: 10.1126/science.1176325.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19661431" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Argonaute Proteins ; Carrier Proteins/chemistry/genetics/isolation & purification/*metabolism ; Catalytic Domain ; Drosophila Proteins/chemistry/genetics/isolation & purification/*metabolism ; Drosophila melanogaster/chemistry/enzymology/*genetics ; Models, Molecular ; Molecular Sequence Data ; Mutation ; Protein Conformation ; RNA Helicases/genetics/metabolism ; *RNA Interference ; RNA, Double-Stranded/chemistry/metabolism ; RNA, Small Interfering/chemistry/metabolism ; RNA-Binding Proteins/genetics/metabolism ; RNA-Induced Silencing Complex/genetics/*metabolism ; Recombinant Proteins/metabolism ; Ribonuclease III/genetics/metabolism
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  • 69
    Publication Date: 2009-02-21
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Conley, Daniel J -- Paerl, Hans W -- Howarth, Robert W -- Boesch, Donald F -- Seitzinger, Sybil P -- Havens, Karl E -- Lancelot, Christiane -- Likens, Gene E -- New York, N.Y. -- Science. 2009 Feb 20;323(5917):1014-5. doi: 10.1126/science.1167755.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉GeoBiosphere Science Centre, Department of Geology, Lund University, Solvegatan 12, SE-223 62 Lund, Sweden. daniel.conley@geol.lu.se〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19229022" target="_blank"〉PubMed〈/a〉
    Keywords: Cyanobacteria/growth & development/metabolism ; *Ecosystem ; Eukaryota/growth & development/metabolism ; *Eutrophication ; Fresh Water/*chemistry/microbiology ; Geologic Sediments/chemistry ; Nitrogen/*analysis/metabolism ; Nitrogen Fixation ; Phosphorus/*analysis/metabolism ; Salinity ; Seawater/*chemistry/microbiology ; Water Microbiology
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 70
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    American Association for the Advancement of Science (AAAS)
    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
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  • 71
    Publication Date: 2009-04-11
    Description: The public trust doctrine would provide a powerful framework for restructuring the way we manage U.S. oceans.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Turnipseed, Mary -- Crowder, Larry B -- Sagarin, Raphael D -- Roady, Stephen E -- New York, N.Y. -- Science. 2009 Apr 10;324(5924):183-4. doi: 10.1126/science.1170889.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Nicholas School of the Environment, Duke University, Durham, NC 27708, USA. mary.turnipseed@duke.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19359567" target="_blank"〉PubMed〈/a〉
    Keywords: *Ecosystem ; *Federal Government ; Jurisprudence ; Legislation as Topic ; Oceans and Seas ; *Public Policy ; United States ; United States Government Agencies
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  • 72
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2009-12-08
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kauppi, Pekka E -- Saikku, Laura -- New York, N.Y. -- Science. 2009 Dec 4;326(5958):1345; author reply 1346. doi: 10.1126/science.326.5958.1345-b.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19965738" target="_blank"〉PubMed〈/a〉
    Keywords: *Biofuels ; Carbon ; *Ecosystem ; *Trees ; Wood
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  • 73
    Publication Date: 2009-10-17
    Description: Nitrogen-fixing (diazotrophic) microorganisms regulate productivity in diverse ecosystems; however, the identities of diazotrophs are unknown in many oceanic environments. Using single-cell-resolution nanometer secondary ion mass spectrometry images of 15N incorporation, we showed that deep-sea anaerobic methane-oxidizing archaea fix N2, as well as structurally similar CN-, and share the products with sulfate-reducing bacterial symbionts. These archaeal/bacterial consortia are already recognized as the major sink of methane in benthic ecosystems, and we now identify them as a source of bioavailable nitrogen as well. The archaea maintain their methane oxidation rates while fixing N2 but reduce their growth, probably in compensation for the energetic burden of diazotrophy. This finding extends the demonstrated lower limits of respiratory energy capable of fueling N2 fixation and reveals a link between the global carbon, nitrogen, and sulfur cycles.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dekas, Anne E -- Poretsky, Rachel S -- Orphan, Victoria J -- New York, N.Y. -- Science. 2009 Oct 16;326(5951):422-6. doi: 10.1126/science.1178223.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA 91125, USA. dekas@gps.caltech.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19833965" target="_blank"〉PubMed〈/a〉
    Keywords: Anaerobiosis ; Archaea/genetics/growth & development/*metabolism ; Bacteria, Anaerobic/genetics/growth & development/metabolism ; Deltaproteobacteria/genetics/growth & development/*metabolism ; *Ecosystem ; Genes, Archaeal ; Genes, Bacterial ; Geologic Sediments/*microbiology ; Mass Spectrometry/methods ; Methane/*metabolism ; *Nitrogen Fixation/genetics ; Nitrogen Isotopes/metabolism ; Operon ; Oxidation-Reduction ; Oxidoreductases/genetics ; Seawater/microbiology ; Sulfates/metabolism ; *Symbiosis
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  • 74
    Publication Date: 2009-04-25
    Description: Fire is a worldwide phenomenon that appears in the geological record soon after the appearance of terrestrial plants. Fire influences global ecosystem patterns and processes, including vegetation distribution and structure, the carbon cycle, and climate. Although humans and fire have always coexisted, our capacity to manage fire remains imperfect and may become more difficult in the future as climate change alters fire regimes. This risk is difficult to assess, however, because fires are still poorly represented in global models. Here, we discuss some of the most important issues involved in developing a better understanding of the role of fire in the Earth system.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bowman, David M J S -- Balch, Jennifer K -- Artaxo, Paulo -- Bond, William J -- Carlson, Jean M -- Cochrane, Mark A -- D'Antonio, Carla M -- Defries, Ruth S -- Doyle, John C -- Harrison, Sandy P -- Johnston, Fay H -- Keeley, Jon E -- Krawchuk, Meg A -- Kull, Christian A -- Marston, J Brad -- Moritz, Max A -- Prentice, I Colin -- Roos, Christopher I -- Scott, Andrew C -- Swetnam, Thomas W -- van der Werf, Guido R -- Pyne, Stephen J -- New York, N.Y. -- Science. 2009 Apr 24;324(5926):481-4. doi: 10.1126/science.1163886.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉University of Tasmania, Hobart, TAS 7001, Australia.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19390038" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Biological Evolution ; Carbon ; Climate ; Earth (Planet) ; *Ecosystem ; *Fires ; Humans ; Plants
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  • 75
    Publication Date: 2009-09-12
    Description: Bacterial nitric oxide synthases (bNOS) are present in many Gram-positive species and have been demonstrated to synthesize NO from arginine in vitro and in vivo. However, the physiological role of bNOS remains largely unknown. We show that NO generated by bNOS increases the resistance of bacteria to a broad spectrum of antibiotics, enabling the bacteria to survive and share habitats with antibiotic-producing microorganisms. NO-mediated resistance is achieved through both the chemical modification of toxic compounds and the alleviation of the oxidative stress imposed by many antibiotics. Our results suggest that the inhibition of NOS activity may increase the effectiveness of antimicrobial therapy.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2929644/" 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/PMC2929644/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gusarov, Ivan -- Shatalin, Konstantin -- Starodubtseva, Marina -- Nudler, Evgeny -- DP1 OD000799/OD/NIH HHS/ -- DP1 OD000799-02/OD/NIH HHS/ -- DP1 OD000799-03/OD/NIH HHS/ -- DP1 OD000799-04/OD/NIH HHS/ -- New York, N.Y. -- Science. 2009 Sep 11;325(5946):1380-4. doi: 10.1126/science.1175439.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry, New York University School of Medicine, 550 First Avenue, New York, NY 10016, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19745150" target="_blank"〉PubMed〈/a〉
    Keywords: Acriflavine/metabolism/pharmacology ; Anti-Bacterial Agents/metabolism/*pharmacology ; Antibiosis ; Bacillus anthracis/drug effects/genetics/growth & development/metabolism ; Bacillus subtilis/drug effects/genetics/growth & development/metabolism ; Bacteria/*drug effects/genetics/growth & development/*metabolism ; Cefuroxime/pharmacology ; Mutation ; Nitric Oxide/*metabolism/pharmacology ; Nitric Oxide Synthase/genetics/*metabolism ; Oxidative Stress ; Pseudomonas aeruginosa/growth & development/metabolism ; Pyocyanine/metabolism/pharmacology ; Reactive Oxygen Species/metabolism ; Soil Microbiology ; Staphylococcus aureus/drug effects/genetics/growth & development/metabolism ; Superoxide Dismutase/metabolism
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  • 76
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2009-06-23
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Boetius, Antje -- Joye, Samantha -- New York, N.Y. -- Science. 2009 Jun 19;324(5934):1523-5. doi: 10.1126/science.1172979.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉HGF-MPG Joint Research Group for Deep Sea Ecology and Technology, Alfred Wegener Institute for Polar and Marine Research, 27515 Bremerhaven, Germany. aboetius@mpi-bremen.de〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19541984" target="_blank"〉PubMed〈/a〉
    Keywords: Adaptation, Physiological ; Animals ; Artemia/physiology ; Chlorophyta/physiology ; *Ecosystem ; Halobacteriaceae/physiology ; *Salinity ; Salts ; Sodium Chloride ; *Water Microbiology
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  • 77
    Publication Date: 2009-06-13
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Titus, Brian D -- Maynard, Douglas G -- Dymond, Caren C -- Stinson, Graham -- Kurz, Werner A -- New York, N.Y. -- Science. 2009 Jun 12;324(5933):1389-90; author reply 1390-1. doi: 10.1126/science.324_1389c.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Natural Resources Canada, Pacific Forestry Centre, Victoria, BC V8Z 1M5, Canada. Brian.Titus@NRCan-RNCan.gc.ca〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19520938" target="_blank"〉PubMed〈/a〉
    Keywords: Biomass ; *Ecosystem ; *Energy-Generating Resources ; European Union ; *Trees ; United States ; *Wood
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  • 78
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2009-03-21
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Guterman, Lila -- New York, N.Y. -- Science. 2009 Mar 20;323(5921):1558-9. doi: 10.1126/science.323.5921.1558.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19299600" target="_blank"〉PubMed〈/a〉
    Keywords: Accidents ; Alaska ; Animals ; *Animals, Wild ; Birds ; Conservation of Natural Resources ; *Ecosystem ; *Environmental Pollution ; Fishes ; Otters ; *Petroleum ; Population Dynamics ; Research ; Ships ; Whales
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  • 79
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2009-04-11
    Description: The traditional view that proteins possess absolute functional specificity and a single, fixed structure conflicts with their marked ability to adapt and evolve new functions and structures. We consider an alternative, "avant-garde view" in which proteins are conformationally dynamic and exhibit functional promiscuity. We surmise that these properties are the foundation stones of protein evolvability; they facilitate the divergence of new functions within existing folds and the evolution of entirely new folds. Packing modes of proteins also affect their evolvability, and poorly packed, disordered, and conformationally diverse proteins may exhibit high evolvability. This dynamic view of protein structure, function, and evolvability is extrapolated to describe hypothetical scenarios for the evolution of the early proteins and future research directions in the area of protein dynamism and evolution.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Tokuriki, Nobuhiko -- Tawfik, Dan S -- New York, N.Y. -- Science. 2009 Apr 10;324(5924):203-7. doi: 10.1126/science.1169375.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biological Chemistry, Weizmann Institute of Science, Rehovot 76100, Israel.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19359577" target="_blank"〉PubMed〈/a〉
    Keywords: Catalytic Domain ; *Evolution, Molecular ; Ligands ; Models, Molecular ; Mutation ; Protein Conformation ; Protein Folding ; Proteins/*chemistry/genetics/*physiology
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  • 80
    Publication Date: 2009-01-24
    Description: Persistent changes in tree mortality rates can alter forest structure, composition, and ecosystem services such as carbon sequestration. Our analyses of longitudinal data from unmanaged old forests in the western United States showed that background (noncatastrophic) mortality rates have increased rapidly in recent decades, with doubling periods ranging from 17 to 29 years among regions. Increases were also pervasive across elevations, tree sizes, dominant genera, and past fire histories. Forest density and basal area declined slightly, which suggests that increasing mortality was not caused by endogenous increases in competition. Because mortality increased in small trees, the overall increase in mortality rates cannot be attributed solely to aging of large trees. Regional warming and consequent increases in water deficits are likely contributors to the increases in tree mortality rates.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉van Mantgem, Phillip J -- Stephenson, Nathan L -- Byrne, John C -- Daniels, Lori D -- Franklin, Jerry F -- Fule, Peter Z -- Harmon, Mark E -- Larson, Andrew J -- Smith, Jeremy M -- Taylor, Alan H -- Veblen, Thomas T -- New York, N.Y. -- Science. 2009 Jan 23;323(5913):521-4. doi: 10.1126/science.1165000.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉U.S. Geological Survey, Western Ecological Research Center, Three Rivers, CA 93271, USA. pvanmantgem@usgs.gov〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19164752" target="_blank"〉PubMed〈/a〉
    Keywords: Abies/anatomy & histology/growth & development ; *Climate ; *Coniferophyta/anatomy & histology/growth & development ; *Ecosystem ; Fires ; Models, Statistical ; Nonlinear Dynamics ; Northwestern United States ; Pinus/anatomy & histology/growth & development ; Temperature ; *Trees/growth & development ; Tsuga/anatomy & histology/growth & development ; United States
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  • 81
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2009-12-08
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Schwarzman, Megan R -- Wilson, Michael P -- 5U19EH000097-04/EH/NCEH CDC HHS/ -- New York, N.Y. -- Science. 2009 Nov 20;326(5956):1065-6. doi: 10.1126/science.1177537.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Center for Occupational and Environmental Health, School of Public Health, University of California at Berkeley, Berkeley, CA 94720, USA. mschwarzman@berkeley.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19965413" target="_blank"〉PubMed〈/a〉
    Keywords: Chemical Industry/*legislation & jurisprudence ; *Ecosystem ; *Endocrine Disruptors/toxicity ; *Environmental Pollutants/toxicity ; European Union ; *Hazardous Substances/toxicity ; *Public Policy ; Risk Assessment ; United States ; United States Environmental Protection Agency
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  • 82
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2009-08-01
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Normile, Dennis -- New York, N.Y. -- Science. 2009 Jul 31;325(5940):559-61. doi: 10.1126/science.325_559.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19644105" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Anthozoa/genetics/growth & development/physiology ; Biodiversity ; *Conservation of Natural Resources/economics/methods ; *Ecosystem ; Genetic Variation ; Larva/physiology ; Reproduction
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  • 83
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2009-08-01
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Normile, Dennis -- New York, N.Y. -- Science. 2009 Jul 31;325(5940):557. doi: 10.1126/science.325_557.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19644104" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Biodiversity ; Borneo ; *Conservation of Natural Resources ; *Ecosystem ; *Pongo pygmaeus ; *Trees/growth & development
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  • 84
    Publication Date: 2009-08-29
    Description: The end-Permian mass extinction removed more than 80% of marine genera. Ammonoid cephalopods were among the organisms most affected by this crisis. The analysis of a global diversity data set of ammonoid genera covering about 106 million years centered on the Permian-Triassic boundary (PTB) shows that Triassic ammonoids actually reached levels of diversity higher than in the Permian less than 2 million years after the PTB. The data favor a hierarchical rather than logistic model of diversification coupled with a niche incumbency hypothesis. This explosive and nondelayed diversification contrasts with the slow and delayed character of the Triassic biotic recovery as currently illustrated for other, mainly benthic groups such as bivalves and gastropods.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Brayard, Arnaud -- Escarguel, Gilles -- Bucher, Hugo -- Monnet, Claude -- Bruhwiler, Thomas -- Goudemand, Nicolas -- Galfetti, Thomas -- Guex, Jean -- New York, N.Y. -- Science. 2009 Aug 28;325(5944):1118-21. doi: 10.1126/science.1174638.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉UMR-CNRS 5561 Biogeosciences, Universite de Bourgogne, 6 Boulevard Gabriel, F-21000, Dijon, France. arnaud.brayard@u-bourgogne.fr〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19713525" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Biodiversity ; Biological Evolution ; *Cephalopoda/classification/genetics ; Climate ; Databases, Factual ; *Ecosystem ; *Extinction, Biological ; Oceans and Seas ; Paleontology ; Population Dynamics ; Seawater
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 85
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2009-05-16
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kidd, Thomas -- New York, N.Y. -- Science. 2009 May 15;324(5929):893-4. doi: 10.1126/science.1174216.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biology, University of Nevada, Reno, NV 89557, USA. tkidd@unr.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19443775" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Axons/*physiology ; Cell Adhesion Molecules/metabolism ; Drosophila Proteins/*genetics/metabolism ; Drosophila melanogaster/*genetics/growth & development/metabolism ; *Gene Expression Regulation, Developmental ; Membrane Proteins/*genetics/metabolism ; Mutation ; Nerve Growth Factors/metabolism ; Nerve Tissue Proteins/*genetics/metabolism ; Nervous System/growth & development ; Neurons/*physiology ; Receptors, Cell Surface/genetics/*metabolism ; Signal Transduction
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  • 86
    Publication Date: 2009-08-29
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Marshall, Charles R -- Jacobs, David K -- New York, N.Y. -- Science. 2009 Aug 28;325(5944):1079-80. doi: 10.1126/science.1178325.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Invertebrate Paleontology, Museum of Comparative Zoology, Harvard University, Cambridge, MA 02138, USA. cmarshall@oeb.harvard.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19713513" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Biodiversity ; *Cephalopoda ; *Ecosystem ; *Extinction, Biological ; *Fossils ; Greenhouse Effect ; Oceans and Seas ; Oxygen ; Paleontology ; Population Dynamics ; Seawater
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  • 87
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2009-03-17
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Grossniklaus, Ueli -- New York, N.Y. -- Science. 2009 Mar 13;323(5920):1439-40. doi: 10.1126/science.1171412.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute of Plant Biology and Zurich-Basel Plant Science Center, University of Zurich, Zollikerstrasse 107, 8008 Zurich, Switzerland. grossnik@botinst.uzh.ch〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19286544" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Motifs ; Arabidopsis/embryology/*genetics/*growth & development/metabolism ; Arabidopsis Proteins/chemistry/*genetics/*metabolism ; Cell Division ; *Gene Expression Regulation, Plant ; Genomic Imprinting ; Interleukin-1 Receptor-Associated Kinases/chemistry/*genetics/*metabolism ; MAP Kinase Kinase Kinases/metabolism ; MAP Kinase Signaling System ; Mitogen-Activated Protein Kinase Kinases/metabolism ; Mitogen-Activated Protein Kinases/metabolism ; Mutation ; Seeds/growth & development/metabolism ; Transcription, Genetic
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  • 88
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2009-02-21
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Grunbaum, Daniel -- New York, N.Y. -- Science. 2009 Feb 20;323(5917):1022-3. doi: 10.1126/science.1170662.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉School of Oceanography, University of Washington, Seattle, WA 98195-7940, USA. grunbaum@ocean.washington.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19229028" target="_blank"〉PubMed〈/a〉
    Keywords: Biodiversity ; Biomechanical Phenomena ; Cell Shape ; *Ecosystem ; Eukaryota/cytology/*physiology ; Flagella/physiology ; Movement ; Phytoplankton/cytology/*physiology ; *Water ; *Water Movements
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  • 89
    Publication Date: 2009-02-21
    Description: Aging induces gradual yet massive cell death in higher organisms, including annual plants. Even so, the underlying regulatory mechanisms are barely known, despite the long-standing interest in this topic. Here, we demonstrate that ORE1, which is a NAC (NAM, ATAF, and CUC) transcription factor, positively regulates aging-induced cell death in Arabidopsis leaves. ORE1 expression is up-regulated concurrently with leaf aging by EIN2 but is negatively regulated by miR164. miR164 expression gradually decreases with aging through negative regulation by EIN2, which leads to the elaborate up-regulation of ORE1 expression. However, EIN2 still contributes to aging-induced cell death in the absence of ORE1. The trifurcate feed-forward pathway involving ORE1, miR164, and EIN2 provides a highly robust regulation to ensure that aging induces cell death in Arabidopsis leaves.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kim, Jin Hee -- Woo, Hye Ryun -- Kim, Jeongsik -- Lim, Pyung Ok -- Lee, In Chul -- Choi, Seung Hee -- Hwang, Daehee -- Nam, Hong Gil -- New York, N.Y. -- Science. 2009 Feb 20;323(5917):1053-7. doi: 10.1126/science.1166386.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Molecular Life Sciences, Pohang University of Science and Technology, Hyoja-dong, Pohang, Kyungbuk, 790-784, Republic of Korea.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19229035" target="_blank"〉PubMed〈/a〉
    Keywords: Aging ; *Apoptosis ; Arabidopsis/cytology/genetics/*physiology ; Arabidopsis Proteins/genetics/*physiology ; Down-Regulation ; Gene Expression Regulation, Plant ; Genes, Plant ; MicroRNAs/genetics/*physiology ; Mutation ; Plant Leaves/cytology/*physiology ; Plants, Genetically Modified ; RNA, Messenger/genetics/metabolism ; RNA, Plant/genetics/*physiology ; Receptors, Cell Surface/genetics/*physiology ; Signal Transduction ; Transcription Factors/genetics/*physiology ; Up-Regulation
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  • 90
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2009-10-17
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Brodie, Jedediah F -- Gibbs, Holly K -- New York, N.Y. -- Science. 2009 Oct 16;326(5951):364-5. doi: 10.1126/science.326_364b.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Wildlife Biology Program, University of Montana, Missoula, MT 59802, USA. jedediah.brodie@gmail.com〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19833939" target="_blank"〉PubMed〈/a〉
    Keywords: Africa ; Animals ; *Climatic Processes ; *Conservation of Natural Resources ; *Ecosystem ; Extinction, Biological ; Meat ; Population Dynamics ; *Tropical Climate ; *Vertebrates
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  • 91
    Publication Date: 2009-01-24
    Description: Regeneration of injured neurons can restore function, but most neurons regenerate poorly or not at all. The failure to regenerate in some cases is due to a lack of activation of cell-intrinsic regeneration pathways. These pathways might be targeted for the development of therapies that can restore neuron function after injury or disease. Here, we show that the DLK-1 mitogen-activated protein (MAP) kinase pathway is essential for regeneration in Caenorhabditis elegans motor neurons. Loss of this pathway eliminates regeneration, whereas activating it improves regeneration. Further, these proteins also regulate the later step of growth cone migration. We conclude that after axon injury, activation of this MAP kinase cascade is required to switch the mature neuron from an aplastic state to a state capable of growth.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2729122/" 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/PMC2729122/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hammarlund, Marc -- Nix, Paola -- Hauth, Linda -- Jorgensen, Erik M -- Bastiani, Michael -- 1R21NS060275/NS/NINDS NIH HHS/ -- NS034307/NS/NINDS NIH HHS/ -- R21 NS060275-02/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 2009 Feb 6;323(5915):802-6. doi: 10.1126/science.1165527. Epub 2009 Jan 22.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biology, University of Utah, 257 South 1400 East, Salt Lake City, UT 84112-0840, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19164707" target="_blank"〉PubMed〈/a〉
    Keywords: Aging ; Animals ; Axons/*physiology/ultrastructure ; Axotomy ; Caenorhabditis elegans/genetics/*physiology ; Caenorhabditis elegans Proteins/genetics/*metabolism ; Growth Cones/physiology ; MAP Kinase Kinase 4/genetics/metabolism ; MAP Kinase Kinase Kinases/genetics/*metabolism ; *MAP Kinase Signaling System ; Mitogen-Activated Protein Kinases/genetics/metabolism ; Models, Biological ; Motor Neurons/*physiology ; Mutation ; Nerve Regeneration/physiology ; RNA Interference ; gamma-Aminobutyric Acid/metabolism
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  • 92
    Publication Date: 2009-08-22
    Description: By using remotely operated vehicles, we found seven previously unknown species of swimming annelid worms below 1800 meters. Specimens were large and bore a variety of elaborate head appendages. In addition, five species have pairs of ellipsoidal organs homologous to branchiae that produce brilliant green bioluminescence when autotomized. Five genes were used to determine the evolutionary relationships of these worms within Cirratuliformia. These species form a clade within Acrocirridae and were not closely related to either of the two known pelagic cirratuliforms. Thus, this clade represents a third invasion of the pelagic realm from Cirratuliformia. This finding emphasizes the wealth of discoveries to be made in pelagic and deep demersal habitats.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Osborn, Karen J -- Haddock, Steven H D -- Pleijel, Fredrik -- Madin, Laurence P -- Rouse, Greg W -- New York, N.Y. -- Science. 2009 Aug 21;325(5943):964. doi: 10.1126/science.1172488.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Scripps Institution of Oceanography, La Jolla, CA 92093, USA. kjosborn@ucsd.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19696343" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Ecosystem ; Luminescence ; Molecular Sequence Data ; Polychaeta/*anatomy & histology/classification/genetics/*physiology ; *Seawater ; Swimming
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  • 93
    Publication Date: 2009-12-08
    Description: The molecular mechanisms that achieve homeostatic stabilization of neural function remain largely unknown. To better understand how neural function is stabilized during development and throughout life, we used an electrophysiology-based forward genetic screen and assessed the function of more than 250 neuronally expressed genes for a role in the homeostatic modulation of synaptic transmission in Drosophila. This screen ruled out the involvement of numerous synaptic proteins and identified a critical function for dysbindin, a gene linked to schizophrenia in humans. We found that dysbindin is required presynaptically for the retrograde, homeostatic modulation of neurotransmission, and functions in a dose-dependent manner downstream or independently of calcium influx. Thus, dysbindin is essential for adaptive neural plasticity and may link altered homeostatic signaling with a complex neurological disease.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3063306/" 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/PMC3063306/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dickman, Dion K -- Davis, Graeme W -- NS39313/NS/NINDS NIH HHS/ -- R01 NS039313/NS/NINDS NIH HHS/ -- R01 NS039313-12/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 2009 Nov 20;326(5956):1127-30. doi: 10.1126/science.1179685.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry and Biophysics, University of California, San Francisco, CA 94158, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19965435" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Calcium/metabolism ; Calcium Channels/genetics/metabolism ; Carrier Proteins/genetics ; Drosophila Proteins/genetics/metabolism ; Drosophila melanogaster/*genetics/*physiology ; Dystrophin-Associated Proteins ; Genes, Insect ; Glutamic Acid/metabolism ; Homeostasis ; Humans ; Mutation ; Neuromuscular Junction/physiology ; Neuronal Plasticity ; Schizophrenia/genetics ; Synapses/*physiology/ultrastructure ; *Synaptic Transmission ; Synaptic Vesicles/metabolism ; Transgenes
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  • 94
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2009-10-10
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉King, David G -- Kashi, Yechezkel -- New York, N.Y. -- Science. 2009 Oct 9;326(5950):229-30. doi: 10.1126/science.326_229.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Anatomy, Southern Illinois University, Carbondale, IL 62901, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19815757" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; DNA/chemistry/*genetics ; Evolution, Molecular ; Mutation ; *Repetitive Sequences, Nucleic Acid
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  • 95
    Publication Date: 2009-10-03
    Description: Intraspecific chemical communication is mediated by signals called pheromones. Caenorhabditis elegans secretes a mixture of small molecules (collectively termed dauer pheromone) that regulates entry into the alternate dauer larval stage and also modulates adult behavior via as yet unknown receptors. Here, we identify two heterotrimeric GTP-binding protein (G protein)-coupled receptors (GPCRs) that mediate dauer formation in response to a subset of dauer pheromone components. The SRBC-64 and SRBC-66 GPCRs are members of the large Caenorhabditis-specific SRBC subfamily and are expressed in the ASK chemosensory neurons, which are required for pheromone-induced dauer formation. Expression of both, but not each receptor alone, confers pheromone-mediated effects on heterologous cells. Identification of dauer pheromone receptors will allow a better understanding of the signaling cascades that transduce the context-dependent effects of ecologically important chemical signals.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4448937/" 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/PMC4448937/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kim, Kyuhyung -- Sato, Koji -- Shibuya, Mayumi -- Zeiger, Danna M -- Butcher, Rebecca A -- Ragains, Justin R -- Clardy, Jon -- Touhara, Kazushige -- Sengupta, Piali -- F32 GM077943/GM/NIGMS NIH HHS/ -- P30 NS045713/NS/NINDS NIH HHS/ -- P30 NS45713/NS/NINDS NIH HHS/ -- R01 CA024487/CA/NCI NIH HHS/ -- R01 CA24487/CA/NCI NIH HHS/ -- R01 GM056223/GM/NIGMS NIH HHS/ -- R01 GM56223/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2009 Nov 13;326(5955):994-8. doi: 10.1126/science.1176331. Epub 2009 Oct 1.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biology and National Center for Behavioral Genomics, Brandeis University, Waltham, MA 02454, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19797623" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Caenorhabditis elegans/genetics/*growth & development/*physiology ; Caenorhabditis elegans Proteins/genetics/physiology ; Calcium/metabolism ; Cell Line ; Chemoreceptor Cells/metabolism ; Cyclic AMP/metabolism ; Cyclic GMP/metabolism ; GTP-Binding Protein alpha Subunits, Gi-Go/physiology ; Gene Expression Regulation, Developmental ; Genes, Helminth ; Guanylate Cyclase/antagonists & inhibitors/metabolism ; Hexoses/chemistry/physiology ; Humans ; Mutation ; Pheromones/*physiology ; Receptors, G-Protein-Coupled ; Reproduction ; Signal Transduction ; Transfection
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  • 96
    Publication Date: 2009-08-01
    Description: Species invasions impose key biotic thresholds limiting the success of ecological restoration projects. These thresholds may be difficult to reverse and will have long-term consequences for restoration because of invasion legacies such as extinctions; because most invasive species cannot be eliminated given current technology and resources; and because even when controlled to low levels, invasive species continue to exert substantial pressure on native biodiversity. Restoration outcomes in the face of biological invasions are likely to be novel and will require long-term resource commitment, as any letup in invasive species management will result in the loss of the conservation gains achieved.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Norton, David A -- New York, N.Y. -- Science. 2009 Jul 31;325(5940):569-71. doi: 10.1126/science.1172978.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Rural Ecology Research Group, School of Forestry, University of Canterbury, Private Bag 4800, Christchurch 8140, New Zealand. david.norton@canterbury.ac.nz〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19644109" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Biodiversity ; *Conservation of Natural Resources/trends ; *Ecosystem ; *Environment ; Forecasting ; New Zealand ; Pest Control ; Plant Development ; *Plants ; Population Dynamics ; Trees
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  • 97
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2009-04-04
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hansen, Dennis M -- Galetti, Mauro -- New York, N.Y. -- Science. 2009 Apr 3;324(5923):42-3. doi: 10.1126/science.1172393.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biology, 371 Serra Mall, Stanford University, Stanford, CA 94305, USA. dmhansen@stanford.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19342573" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Biodiversity ; Body Size ; *Ecosystem ; *Extinction, Biological ; Feeding Behavior ; Geography ; Seeds ; *Vertebrates/anatomy & histology/physiology
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  • 98
    Publication Date: 2009-12-08
    Description: Initiatives to reduce carbon emissions from deforestation and degradation (REDD) are providing increasing incentives for forest protection. The collateral benefits for biodiversity depend on the extent to which emissions reductions and biodiversity conservation can be achieved in the same places. Globally, we demonstrate spatial trade-offs in allocating funds to protect forests for carbon and biodiversity and show that cost-effective spending for REDD would protect relatively few species of forest vertebrates. Because trade-offs are nonlinear, we discover that minor adjustments to the allocation of funds could double the biodiversity protected by REDD, while reducing carbon outcomes by only 4 to 8%.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Venter, Oscar -- Laurance, William F -- Iwamura, Takuya -- Wilson, Kerrie A -- Fuller, Richard A -- Possingham, Hugh P -- New York, N.Y. -- Science. 2009 Dec 4;326(5958):1368. doi: 10.1126/science.1180289.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉The Ecology Centre, University of Queensland, Brisbane, Queensland 4072, Australia. oventer@uq.edu.au〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19965752" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Atmosphere ; *Biodiversity ; *Carbon ; Conservation of Natural Resources/*economics ; Cost-Benefit Analysis ; Developing Countries ; *Ecosystem ; Models, Statistical ; *Trees
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  • 99
    Publication Date: 2009-12-08
    Description: Phytoplankton--the microalgae that populate the upper lit layers of the ocean--fuel the oceanic food web and affect oceanic and atmospheric carbon dioxide levels through photosynthetic carbon fixation. Here, we show that multidecadal changes in global phytoplankton abundances are related to basin-scale oscillations of the physical ocean, specifically the Pacific Decadal Oscillation and the Atlantic Multidecadal Oscillation. This relationship is revealed in approximately 20 years of satellite observations of chlorophyll and sea surface temperature. Interaction between the main pycnocline and the upper ocean seasonal mixed layer is one mechanism behind this correlation. Our findings provide a context for the interpretation of contemporary changes in global phytoplankton and should improve predictions of their future evolution with climate change.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Martinez, Elodie -- Antoine, David -- D'Ortenzio, Fabrizio -- Gentili, Bernard -- New York, N.Y. -- Science. 2009 Nov 27;326(5957):1253-6. doi: 10.1126/science.1177012.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉UPMC University of Paris 06, UMR 7093, Laboratoire d'Oceanographie de Villefranche (LOV), 06230 Villefranche-sur-Mer, France. martinez@obs-vlfr.fr〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19965473" target="_blank"〉PubMed〈/a〉
    Keywords: Atlantic Ocean ; Biomass ; Chlorophyll/*analysis ; *Climate ; *Ecosystem ; Global Warming ; Indian Ocean ; Oceans and Seas ; Pacific Ocean ; Phytoplankton/*physiology ; Population Dynamics ; Seasons ; *Seawater/chemistry ; Temperature ; Time Factors
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  • 100
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2009-01-20
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Semple, Colin A M -- Taylor, Martin S -- GR078968/Wellcome Trust/United Kingdom -- Medical Research Council/United Kingdom -- New York, N.Y. -- Science. 2009 Jan 16;323(5912):347-8. doi: 10.1126/science.1169408.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉MRC Human Genetics Unit, Institute of Genetics and Molecular Medicine, Edinburgh EH4 2XU, UK. colins@hgu.mrc.ac.uk〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19150834" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Chromatin/*physiology/ultrastructure ; DNA/*genetics ; *Genetic Variation ; *Genome ; INDEL Mutation ; Mutation ; Nucleosomes/*physiology ; Oryzias/*genetics ; Promoter Regions, Genetic ; Selection, Genetic ; *Transcription Initiation Site
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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