Microbial Selection and Survival in Subseafloor Sediment
Many studies have examined relationships of microorganisms to geochemical zones in subseafloor sediment. However, responses to selective pressure and patterns of community succession with sediment depth have rarely been examined. Here we use 16S rDNA sequencing to examine the succession of microbial...
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ftpubmed:oai:pubmedcentral.nih.gov:6527604 2023-05-15T15:43:34+02:00 Microbial Selection and Survival in Subseafloor Sediment Kirkpatrick, John B. Walsh, Emily A. D’Hondt, Steven 2019-05-14 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6527604/ http://www.ncbi.nlm.nih.gov/pubmed/31139156 https://doi.org/10.3389/fmicb.2019.00956 en eng Frontiers Media S.A. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6527604/ http://www.ncbi.nlm.nih.gov/pubmed/31139156 http://dx.doi.org/10.3389/fmicb.2019.00956 Copyright © 2019 Kirkpatrick, Walsh and D’Hondt. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms. CC-BY Microbiology Text 2019 ftpubmed https://doi.org/10.3389/fmicb.2019.00956 2019-06-02T00:23:38Z Many studies have examined relationships of microorganisms to geochemical zones in subseafloor sediment. However, responses to selective pressure and patterns of community succession with sediment depth have rarely been examined. Here we use 16S rDNA sequencing to examine the succession of microbial communities at sites in the Indian Ocean and the Bering Sea. The sediment ranges in depth from 0.16 to 332 m below seafloor and in age from 660 to 1,300,000 years. The majority of subseafloor taxonomic diversity is present in the shallowest depth sampled. The best predictor of sequence presence or absence in the oldest sediment is relative abundance in the near-seafloor sediment. This relationship suggests that perseverance of specific taxa into deep, old sediment is primarily controlled by the taxonomic abundance that existed when the sediment was near the seafloor. The operational taxonomic units that dominate at depth comprise a subset of the local seafloor community at each site, rather than a grown-in group of geographically widespread subseafloor specialists. At both sites, most taxa classified as abundant decrease in relative frequency with increasing sediment depth and age. Comparison of community composition to cell counts at the Bering Sea site indicates that the rise of the few dominant taxa in the deep subseafloor community does not require net replication, but might simply result from lower mortality relative to competing taxa on the long timescale of community burial. Text Bering Sea PubMed Central (PMC) Bering Sea Indian Perseverance ENVELOPE(162.200,162.200,-76.800,-76.800) Frontiers in Microbiology 10 |
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PubMed Central (PMC) |
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ftpubmed |
language |
English |
topic |
Microbiology |
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Microbiology Kirkpatrick, John B. Walsh, Emily A. D’Hondt, Steven Microbial Selection and Survival in Subseafloor Sediment |
topic_facet |
Microbiology |
description |
Many studies have examined relationships of microorganisms to geochemical zones in subseafloor sediment. However, responses to selective pressure and patterns of community succession with sediment depth have rarely been examined. Here we use 16S rDNA sequencing to examine the succession of microbial communities at sites in the Indian Ocean and the Bering Sea. The sediment ranges in depth from 0.16 to 332 m below seafloor and in age from 660 to 1,300,000 years. The majority of subseafloor taxonomic diversity is present in the shallowest depth sampled. The best predictor of sequence presence or absence in the oldest sediment is relative abundance in the near-seafloor sediment. This relationship suggests that perseverance of specific taxa into deep, old sediment is primarily controlled by the taxonomic abundance that existed when the sediment was near the seafloor. The operational taxonomic units that dominate at depth comprise a subset of the local seafloor community at each site, rather than a grown-in group of geographically widespread subseafloor specialists. At both sites, most taxa classified as abundant decrease in relative frequency with increasing sediment depth and age. Comparison of community composition to cell counts at the Bering Sea site indicates that the rise of the few dominant taxa in the deep subseafloor community does not require net replication, but might simply result from lower mortality relative to competing taxa on the long timescale of community burial. |
format |
Text |
author |
Kirkpatrick, John B. Walsh, Emily A. D’Hondt, Steven |
author_facet |
Kirkpatrick, John B. Walsh, Emily A. D’Hondt, Steven |
author_sort |
Kirkpatrick, John B. |
title |
Microbial Selection and Survival in Subseafloor Sediment |
title_short |
Microbial Selection and Survival in Subseafloor Sediment |
title_full |
Microbial Selection and Survival in Subseafloor Sediment |
title_fullStr |
Microbial Selection and Survival in Subseafloor Sediment |
title_full_unstemmed |
Microbial Selection and Survival in Subseafloor Sediment |
title_sort |
microbial selection and survival in subseafloor sediment |
publisher |
Frontiers Media S.A. |
publishDate |
2019 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6527604/ http://www.ncbi.nlm.nih.gov/pubmed/31139156 https://doi.org/10.3389/fmicb.2019.00956 |
long_lat |
ENVELOPE(162.200,162.200,-76.800,-76.800) |
geographic |
Bering Sea Indian Perseverance |
geographic_facet |
Bering Sea Indian Perseverance |
genre |
Bering Sea |
genre_facet |
Bering Sea |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6527604/ http://www.ncbi.nlm.nih.gov/pubmed/31139156 http://dx.doi.org/10.3389/fmicb.2019.00956 |
op_rights |
Copyright © 2019 Kirkpatrick, Walsh and D’Hondt. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms. |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.3389/fmicb.2019.00956 |
container_title |
Frontiers in Microbiology |
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10 |
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1766377744198795264 |