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  • 1
    Electronic Resource
    Electronic Resource
    Evolution of extreme specialization within a lineage of ectomycorrhizal epiparasites (1996)
    [s.l.] : Nature Publishing Group
    Nature 379 (1996), S. 63-66 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Ectomycorrhizae are mutualistic associations between a vascular plant root and a fungus; they are the dominant nutrient-gathering organs in most temperate forest ecosystems3. These mutualisms vary from general to specific, but when specificity occurs it is one-sided: fungal species may be specific ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/379063a0
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    Paper (German National Licenses)
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  • 2
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    Evolution of extreme specialization within a lineage of ectomycorrhizal epiparasites (1996)
    Springer Nature
    Details
    Publication Date: 1996-01-01
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Published by Springer Nature
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    PAPER CURRENT
  • 3
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    A 5.8S nuclear ribosomal RNA gene sequence database: applications to ecology and evolution (1998)
    In:  Other Sources
    Details
    Publication Date: 2011-08-24
    Description: We complied a 5.8S nuclear ribosomal gene sequence database for animals, plants, and fungi using both newly generated and GenBank sequences. We demonstrate the utility of this database as an internal check to determine whether the target organism and not a contaminant has been sequenced, as a diagnostic tool for ecologists and evolutionary biologists to determine the placement of asexual fungi within larger taxonomic groups, and as a tool to help identify fungi that form ectomycorrhizae.
    Keywords: Life Sciences (General)
    Type: Molecular ecology (ISSN 0962-1083); Volume 7; 7; 919-23
    Format: text
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    NASA TECHNICAL REPORTS
  • 4
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    Ectomycorrhizal specificity patterns in a mixed Pinus contorta and Picea engelmannii forest in Yellowstone National Park (2000)
    In:  Other Sources
    Details
    Publication Date: 2011-08-24
    Description: We used molecular genetic methods to test two hypotheses, (i) that host plant specificity among ectomycorrhizal fungi would be common in a closed-canopy, mixed Pinus contorta-Picea engelmannii forest in Yellowstone National Park and (ii) that specificity would be more common in the early successional tree species, P. contorta, than in the invader, P. engelmannii. We identified 28 ectomycorrhizal fungal species collected from 27 soil cores. The proportion of P. engelmannii to P. contorta ectomycorrhizae was nearly equal (52 and 48%, respectively). Of the 28 fungal species, 18 composed greater than 95% of the fungal community. No species was associated exclusively with P. contorta, but four species, each found in only one core, and one species found in two cores were associated exclusively with P. engelmannii. These fungi composed less than 5% of the total ectomycorrhizae. Thus, neither hypothesis was supported, and hypothesized benefits of ectomycorrhizal specificity to both trees and fungi probably do not exist in this system.
    Keywords: Life Sciences (General)
    Type: Applied and environmental microbiology (ISSN 0099-2240); Volume 66; 11; 4988-91
    Format: text
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    NASA TECHNICAL REPORTS
  • 5
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    Ectomycorrhizal fungal associates of Pinus contorta in soils associated with a hot spring in Norris Geyser Basin, Yellowstone National Park, Wyoming (2001)
    In:  Other Sources
    Details
    Publication Date: 2011-08-24
    Description: Molecular methods and comparisons of fruiting patterns (i.e., presence or absence of fungal fruiting bodies in different soil types) were used to determine ectomycorrhizal (EM) associates of Pinus contorta in soils associated with a thermal soil classified as ultra-acidic to extremely acidic (pH 2 to 4). EM were sampled by obtaining 36 soil cores from six paired plots (three cores each) of both thermal soils and forest soils directly adjacent to the thermal area. Fruiting bodies (mushrooms) were collected for molecular identification and to compare fruiting body (above-ground) diversity to below-ground diversity. Our results indicate (i) that there were significant decreases in both the level of EM infection (130 +/- 22 EM root tips/core in forest soil; 68 +/- 22 EM root tips/core in thermal soil) and EM fungal species richness (4.0 +/- 0.5 species/core in forest soil; 1.2 +/- 0.2 species/core in thermal soil) in soils associated with the thermal feature; (ii) that the EM mycota of thermal soils was comprised of a small set of dominant species and included very few rare species, while the EM mycota of forest soils contained a few dominant species and several rare EM fungal species; (iii) that Dermocybe phoenecius and a species of Inocybe, which was rare in forest soils, were the dominant EM fungal species in thermal soils; (iv) that other than the single Inocybe species, there was no overlap in the EM fungal communities of the forest and thermal soils; and (v) that the fungal species forming the majority of the above-ground fruiting structures in thermal soils (Pisolithus tinctorius, which is commonly used in remediation of acid soils) was not detected on a single EM root tip in either type of soil. Thus, P. tinctorius may have a different role in these thermal soils. Our results suggest that this species may not perform well in remediation of all acid soils and that factors such as pH, soil temperature, and soil chemistry may interact to influence EM fungal community structure. In addition, we identified at least one new species with potential for use in remediation of hot acidic soil.
    Keywords: Life Sciences (General)
    Type: Applied and environmental microbiology (ISSN 0099-2240); Volume 67; 12; 5538-43
    Format: text
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    NASA TECHNICAL REPORTS
  • 6
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    Carbon Isotopic Fractionation Associated with Cyanobacterial Biomarkers: 2-Methylhopanoids and Methyl-Branched Alkanes (2001)
    In:  Other Sources
    Details
    Publication Date: 2019-07-17
    Description: This paper reports the carbon isotopic fractionations associated with the biosynthesis of biomarker lipids in a number of cyanobacteria obtained from culture collections and isolated from the coniform mats of Yellowstone National Park. Additional information is contained in the original extended abstract.
    Keywords: Geophysics
    Type: Eleventh Annual V. M. Goldschmidt Conference; LPI-Contrib-1088
    Format: text
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    NASA TECHNICAL REPORTS
  • 7
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    Cyanobacterial Community Structure In Lithifying Mats of A Yellowstone Hotspring-Implications for Precambrian Stromatolite Biocomplexity (2002)
    In:  Other Sources
    Details
    Publication Date: 2019-07-18
    Description: Denaturing Gradient Gel Electrophoresis (DGGE) of partial 16S rRNA gene sequences was used to investigate the molecular biodiversity of cyanobacterial communities inhabiting various lithified morpho-structures in two hotsprings of Yellowstone National Park. These morpho-structures - flat-topped columns, columnar cones, and ridged cones - resemble ancient stromatolites, which are possibly biogenic in origin. The top, middle and bottom sections of these lithified morpho-structures, as well as surrounding non-lithified mats were analyzed to determine the vertical and spatial distribution of cyanobacterial communities. Results from DGGE indicate that the cyanobacterial community composition of lithified morpho-structures (flat-topped columns, columnar cones, and ridged cones) were largely similar in vertical distribution as well as among the morpho-structures being studied. Preliminary results indicate that the cyanobacterial communities in these lithified morpho-structures were significantly different from communities in surrounding non-lithified mats. These results provide additional support to the theory that certain Phormidium/Leptolyngbya species are involved in the morphogenesis of lithifying morpho-structures in hotsprings and may have played a role in the formation of ancient stromatolites.
    Keywords: Geosciences (General)
    Type: 2nd Astrobiology Science Conference; Apr 07, 2002 - Apr 11, 2002; Moffett Field, CA; United States
    Format: text
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    NASA TECHNICAL REPORTS
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