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Interactions among Plant Species and Microorganisms in Salt Marsh Sediments
The interactions among Spartina patens and sediment microbial populations and the interactions among Phragmites australis and sediment microbial populations were studied at monotypic sites in Piermont Marsh, a salt marsh of the Hudson River north of New York, N.Y., at key times during the growing se...
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| التنسيق: | مقال |
| اللغة: | en |
| منشور في: |
American Society for Microbiology
2002
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| الوصول للمادة أونلاين: | https://ncbi.nlm.nih.gov/pmc/articles/PMC123761/ https://ncbi.nlm.nih.gov/pubmed/11872463 https://ncbi.nlm.nih.govhttp://dx.doi.org/10.1128/AEM.68.3.1157-1164.2002 |
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pubmed-1237612003-01-08 Interactions among Plant Species and Microorganisms in Salt Marsh Sediments Burke, David J. Hamerlynck, Erik P. Hahn, Dittmar Appl Environ Microbiol Microbial Ecology The interactions among Spartina patens and sediment microbial populations and the interactions among Phragmites australis and sediment microbial populations were studied at monotypic sites in Piermont Marsh, a salt marsh of the Hudson River north of New York, N.Y., at key times during the growing season. Arbuscular mycorrhizal fungi (AMF) effectively colonized S. patens but not P. australis, and there were seasonal increases and decreases that coincided with plant growth and senescence (17 and 6% of the S. patens root length were colonized, respectively). In sediment samples from the Spartina site, the microbial community and specific bacterial populations were at least twice as large in terms of number and biomass as the microbial community and specific bacterial populations in sediment samples from the Phragmites site, and peak values occurred during reproduction. Members of the domain Bacteria, especially members of the α-, γ-, and δ-subdivisions of the Proteobacteria, were the most abundant organisms at both sites throughout the growing season. The populations were generally more dynamic in samples from the Spartina site than in samples from the Phragmites site. No differences between the two sites and no differences during the growing season were observed when restriction fragment length polymorphism analyses of nifH amplicons were performed in an attempt to detect shifts in the diversity of nitrogen-fixing bacteria. Differences were observed only in the patterns generated by PCR or reverse transcription-PCR for samples from the Spartina site, suggesting that there were differences in the overall and active populations of nitrogen-fixing bacteria. Regression analyses indicated that there was a positive interaction between members of the δ-subdivision of the Proteobacteria and root biomass but not between members of the δ-subdivision of the Proteobacteria and macroorganic matter at both sites. In samples from the Spartina site, there were indications that there were bacterium-fungus interactions since populations of members of the α-subdivision of the Proteobacteria were negatively associated with AMF colonization and populations of members of the γ-subdivision of the Proteobacteria were positively associated with AMF colonization. American Society for Microbiology 2002-03 /pmc/articles/PMC123761/ /pubmed/11872463 http://dx.doi.org/10.1128/AEM.68.3.1157-1164.2002 Text en Copyright © 2002, American Society for Microbiology |
| institution |
US National Library of Medicine |
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PubMed Central |
| language |
en |
| format |
Article |
| topic |
Microbial Ecology |
| spellingShingle |
Microbial Ecology Burke, David J. Hamerlynck, Erik P. Hahn, Dittmar Interactions among Plant Species and Microorganisms in Salt Marsh Sediments |
| description |
The interactions among Spartina patens and sediment microbial populations and the interactions among Phragmites australis and sediment microbial populations were studied at monotypic sites in Piermont Marsh, a salt marsh of the Hudson River north of New York, N.Y., at key times during the growing season. Arbuscular mycorrhizal fungi (AMF) effectively colonized S. patens but not P. australis, and there were seasonal increases and decreases that coincided with plant growth and senescence (17 and 6% of the S. patens root length were colonized, respectively). In sediment samples from the Spartina site, the microbial community and specific bacterial populations were at least twice as large in terms of number and biomass as the microbial community and specific bacterial populations in sediment samples from the Phragmites site, and peak values occurred during reproduction. Members of the domain Bacteria, especially members of the α-, γ-, and δ-subdivisions of the Proteobacteria, were the most abundant organisms at both sites throughout the growing season. The populations were generally more dynamic in samples from the Spartina site than in samples from the Phragmites site. No differences between the two sites and no differences during the growing season were observed when restriction fragment length polymorphism analyses of nifH amplicons were performed in an attempt to detect shifts in the diversity of nitrogen-fixing bacteria. Differences were observed only in the patterns generated by PCR or reverse transcription-PCR for samples from the Spartina site, suggesting that there were differences in the overall and active populations of nitrogen-fixing bacteria. Regression analyses indicated that there was a positive interaction between members of the δ-subdivision of the Proteobacteria and root biomass but not between members of the δ-subdivision of the Proteobacteria and macroorganic matter at both sites. In samples from the Spartina site, there were indications that there were bacterium-fungus interactions since populations of members of the α-subdivision of the Proteobacteria were negatively associated with AMF colonization and populations of members of the γ-subdivision of the Proteobacteria were positively associated with AMF colonization. |
| author |
Burke, David J. Hamerlynck, Erik P. Hahn, Dittmar |
| author_facet |
Burke, David J. Hamerlynck, Erik P. Hahn, Dittmar |
| author_sort |
Burke, David J. |
| title |
Interactions among Plant Species and Microorganisms in Salt Marsh Sediments |
| title_short |
Interactions among Plant Species and Microorganisms in Salt Marsh Sediments |
| title_full |
Interactions among Plant Species and Microorganisms in Salt Marsh Sediments |
| title_fullStr |
Interactions among Plant Species and Microorganisms in Salt Marsh Sediments |
| title_full_unstemmed |
Interactions among Plant Species and Microorganisms in Salt Marsh Sediments |
| title_sort |
interactions among plant species and microorganisms in salt marsh sediments |
| publisher |
American Society for Microbiology |
| publisher_facet |
American Society for Microbiology |
| publishDate |
2002 |
| url |
https://ncbi.nlm.nih.gov/pmc/articles/PMC123761/ https://ncbi.nlm.nih.gov/pubmed/11872463 https://ncbi.nlm.nih.govhttp://dx.doi.org/10.1128/AEM.68.3.1157-1164.2002 |
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1759033361538482176 |