Diversity and biogeography of SAR11 bacteria from the Arctic Ocean
The Arctic Ocean is relatively isolated from other oceans and consists of strongly stratified water masses with distinct histories, nutrient, temperature, and salinity characteristics, therefore providing an optimal environment to investigate local adaptation. The globally distributed SAR11 bacteria...
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ftpubmed:oai:pubmedcentral.nih.gov:6908578 2023-05-15T14:32:16+02:00 Diversity and biogeography of SAR11 bacteria from the Arctic Ocean Kraemer, Susanne Ramachandran, Arthi Colatriano, David Lovejoy, Connie Walsh, David A. 2019-09-09 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6908578/ http://www.ncbi.nlm.nih.gov/pubmed/31501503 https://doi.org/10.1038/s41396-019-0499-4 en eng Nature Publishing Group UK http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6908578/ http://www.ncbi.nlm.nih.gov/pubmed/31501503 http://dx.doi.org/10.1038/s41396-019-0499-4 © The Author(s), under exclusive licence to International Society for Microbial Ecology 2019 ISME J Article Text 2019 ftpubmed https://doi.org/10.1038/s41396-019-0499-4 2021-01-03T01:20:01Z The Arctic Ocean is relatively isolated from other oceans and consists of strongly stratified water masses with distinct histories, nutrient, temperature, and salinity characteristics, therefore providing an optimal environment to investigate local adaptation. The globally distributed SAR11 bacterial group consists of multiple ecotypes that are associated with particular marine environments, yet relatively little is known about Arctic SAR11 diversity. Here, we examined SAR11 diversity using ITS analysis and metagenome-assembled genomes (MAGs). Arctic SAR11 assemblages were comprised of the S1a, S1b, S2, and S3 clades, and structured by water mass and depth. The fresher surface layer was dominated by an ecotype (S3-derived P3.2) previously associated with Arctic and brackish water. In contrast, deeper waters of Pacific origin were dominated by the P2.3 ecotype of the S2 clade, within which we identified a novel subdivision (P2.3s1) that was rare outside the Arctic Ocean. Arctic S2-derived SAR11 MAGs were restricted to high latitudes and included MAGs related to the recently defined S2b subclade, a finding consistent with bi-polar ecotypes and Arctic endemism. These results place the stratified Arctic Ocean into the SAR11 global biogeography and have identified SAR11 lineages for future investigation of adaptive evolution in the Arctic Ocean. Text Arctic Arctic Ocean PubMed Central (PMC) Arctic Arctic Ocean Pacific The ISME Journal 14 1 79 90 |
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Article Kraemer, Susanne Ramachandran, Arthi Colatriano, David Lovejoy, Connie Walsh, David A. Diversity and biogeography of SAR11 bacteria from the Arctic Ocean |
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The Arctic Ocean is relatively isolated from other oceans and consists of strongly stratified water masses with distinct histories, nutrient, temperature, and salinity characteristics, therefore providing an optimal environment to investigate local adaptation. The globally distributed SAR11 bacterial group consists of multiple ecotypes that are associated with particular marine environments, yet relatively little is known about Arctic SAR11 diversity. Here, we examined SAR11 diversity using ITS analysis and metagenome-assembled genomes (MAGs). Arctic SAR11 assemblages were comprised of the S1a, S1b, S2, and S3 clades, and structured by water mass and depth. The fresher surface layer was dominated by an ecotype (S3-derived P3.2) previously associated with Arctic and brackish water. In contrast, deeper waters of Pacific origin were dominated by the P2.3 ecotype of the S2 clade, within which we identified a novel subdivision (P2.3s1) that was rare outside the Arctic Ocean. Arctic S2-derived SAR11 MAGs were restricted to high latitudes and included MAGs related to the recently defined S2b subclade, a finding consistent with bi-polar ecotypes and Arctic endemism. These results place the stratified Arctic Ocean into the SAR11 global biogeography and have identified SAR11 lineages for future investigation of adaptive evolution in the Arctic Ocean. |
format |
Text |
author |
Kraemer, Susanne Ramachandran, Arthi Colatriano, David Lovejoy, Connie Walsh, David A. |
author_facet |
Kraemer, Susanne Ramachandran, Arthi Colatriano, David Lovejoy, Connie Walsh, David A. |
author_sort |
Kraemer, Susanne |
title |
Diversity and biogeography of SAR11 bacteria from the Arctic Ocean |
title_short |
Diversity and biogeography of SAR11 bacteria from the Arctic Ocean |
title_full |
Diversity and biogeography of SAR11 bacteria from the Arctic Ocean |
title_fullStr |
Diversity and biogeography of SAR11 bacteria from the Arctic Ocean |
title_full_unstemmed |
Diversity and biogeography of SAR11 bacteria from the Arctic Ocean |
title_sort |
diversity and biogeography of sar11 bacteria from the arctic ocean |
publisher |
Nature Publishing Group UK |
publishDate |
2019 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6908578/ http://www.ncbi.nlm.nih.gov/pubmed/31501503 https://doi.org/10.1038/s41396-019-0499-4 |
geographic |
Arctic Arctic Ocean Pacific |
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Arctic Arctic Ocean Pacific |
genre |
Arctic Arctic Ocean |
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Arctic Arctic Ocean |
op_source |
ISME J |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6908578/ http://www.ncbi.nlm.nih.gov/pubmed/31501503 http://dx.doi.org/10.1038/s41396-019-0499-4 |
op_rights |
© The Author(s), under exclusive licence to International Society for Microbial Ecology 2019 |
op_doi |
https://doi.org/10.1038/s41396-019-0499-4 |
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The ISME Journal |
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14 |
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1 |
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79 |
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90 |
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1766305709490700288 |