Seasonal dynamics of prokaryotes and their associations with diatoms in the Southern Ocean as revealed by an autonomous sampler
Summary The Southern Ocean remains one of the least explored marine environments. The investigation of temporal microbial dynamics has thus far been hampered by the limited access to this remote ocean. We present here high‐resolution seasonal observations of the prokaryotic community composition dur...
Published in: | Environmental Microbiology |
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crwiley:10.1111/1462-2920.15184 2024-06-23T07:56:54+00:00 Seasonal dynamics of prokaryotes and their associations with diatoms in the Southern Ocean as revealed by an autonomous sampler Liu, Yan Blain, Stéphane Crispi, Olivier Rembauville, Mathieu Obernosterer, Ingrid China Scholarship Council Fondation BNP Paribas Institut Polaire Français Paul Emile Victor 2020 http://dx.doi.org/10.1111/1462-2920.15184 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2F1462-2920.15184 https://onlinelibrary.wiley.com/doi/pdf/10.1111/1462-2920.15184 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/1462-2920.15184 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Environmental Microbiology volume 22, issue 9, page 3968-3984 ISSN 1462-2912 1462-2920 journal-article 2020 crwiley https://doi.org/10.1111/1462-2920.15184 2024-06-11T04:50:41Z Summary The Southern Ocean remains one of the least explored marine environments. The investigation of temporal microbial dynamics has thus far been hampered by the limited access to this remote ocean. We present here high‐resolution seasonal observations of the prokaryotic community composition during phytoplankton blooms induced by natural iron fertilization. A total of 18 seawater samples were collected by a moored remote autonomous sampler over 4 months at 5–11 day intervals in offshore surface waters (central Kerguelen Plateau). Illumina sequencing of the 16S rRNA gene revealed that among the most abundant amplicon sequence variants, SAR92 and Aurantivirga were the first bloom responders, Pseudomonadaceae , Nitrincolaceae and Polaribacter had successive peaks during the spring bloom decline, and Amylibacter increased in relative abundance later in the season. SAR11 and SUP05 were abundant prior to and after the blooms. Using network analysis, we identified two groups of diatoms representative of the spring and summer bloom that had opposite correlation patterns with prokaryotic taxa. Our study provides the first seasonal picture of microbial community dynamics in the open Southern Ocean and thereby offers biological insights to the cycling of carbon and iron, and to an important puzzling issue that is the modest nitrate decrease associated to iron fertilization. Article in Journal/Newspaper Southern Ocean Wiley Online Library Kerguelen Southern Ocean Environmental Microbiology 22 9 3968 3984 |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Summary The Southern Ocean remains one of the least explored marine environments. The investigation of temporal microbial dynamics has thus far been hampered by the limited access to this remote ocean. We present here high‐resolution seasonal observations of the prokaryotic community composition during phytoplankton blooms induced by natural iron fertilization. A total of 18 seawater samples were collected by a moored remote autonomous sampler over 4 months at 5–11 day intervals in offshore surface waters (central Kerguelen Plateau). Illumina sequencing of the 16S rRNA gene revealed that among the most abundant amplicon sequence variants, SAR92 and Aurantivirga were the first bloom responders, Pseudomonadaceae , Nitrincolaceae and Polaribacter had successive peaks during the spring bloom decline, and Amylibacter increased in relative abundance later in the season. SAR11 and SUP05 were abundant prior to and after the blooms. Using network analysis, we identified two groups of diatoms representative of the spring and summer bloom that had opposite correlation patterns with prokaryotic taxa. Our study provides the first seasonal picture of microbial community dynamics in the open Southern Ocean and thereby offers biological insights to the cycling of carbon and iron, and to an important puzzling issue that is the modest nitrate decrease associated to iron fertilization. |
author2 |
China Scholarship Council Fondation BNP Paribas Institut Polaire Français Paul Emile Victor |
format |
Article in Journal/Newspaper |
author |
Liu, Yan Blain, Stéphane Crispi, Olivier Rembauville, Mathieu Obernosterer, Ingrid |
spellingShingle |
Liu, Yan Blain, Stéphane Crispi, Olivier Rembauville, Mathieu Obernosterer, Ingrid Seasonal dynamics of prokaryotes and their associations with diatoms in the Southern Ocean as revealed by an autonomous sampler |
author_facet |
Liu, Yan Blain, Stéphane Crispi, Olivier Rembauville, Mathieu Obernosterer, Ingrid |
author_sort |
Liu, Yan |
title |
Seasonal dynamics of prokaryotes and their associations with diatoms in the Southern Ocean as revealed by an autonomous sampler |
title_short |
Seasonal dynamics of prokaryotes and their associations with diatoms in the Southern Ocean as revealed by an autonomous sampler |
title_full |
Seasonal dynamics of prokaryotes and their associations with diatoms in the Southern Ocean as revealed by an autonomous sampler |
title_fullStr |
Seasonal dynamics of prokaryotes and their associations with diatoms in the Southern Ocean as revealed by an autonomous sampler |
title_full_unstemmed |
Seasonal dynamics of prokaryotes and their associations with diatoms in the Southern Ocean as revealed by an autonomous sampler |
title_sort |
seasonal dynamics of prokaryotes and their associations with diatoms in the southern ocean as revealed by an autonomous sampler |
publisher |
Wiley |
publishDate |
2020 |
url |
http://dx.doi.org/10.1111/1462-2920.15184 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2F1462-2920.15184 https://onlinelibrary.wiley.com/doi/pdf/10.1111/1462-2920.15184 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/1462-2920.15184 |
geographic |
Kerguelen Southern Ocean |
geographic_facet |
Kerguelen Southern Ocean |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_source |
Environmental Microbiology volume 22, issue 9, page 3968-3984 ISSN 1462-2912 1462-2920 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/1462-2920.15184 |
container_title |
Environmental Microbiology |
container_volume |
22 |
container_issue |
9 |
container_start_page |
3968 |
op_container_end_page |
3984 |
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1802650291260096512 |