Seasonal dynamics of prokaryotes and their associations with diatoms in the Southern Ocean as revealed by an autonomous sampler
International audience 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...
Published in: | Environmental Microbiology |
---|---|
Main Authors: | , , , , |
Other Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2020
|
Subjects: | |
Online Access: | https://hal.science/hal-02917040 https://hal.science/hal-02917040/document https://hal.science/hal-02917040/file/Liu_2020_HAL.pdf https://doi.org/10.1111/1462-2920.15184 |
id |
ftsorbonneuniv:oai:HAL:hal-02917040v1 |
---|---|
record_format |
openpolar |
spelling |
ftsorbonneuniv:oai:HAL:hal-02917040v1 2024-09-15T18:37:02+00:00 Seasonal dynamics of prokaryotes and their associations with diatoms in the Southern Ocean as revealed by an autonomous sampler Liu, Yan Blain, Stephane Crispi, Olivier Rembauville, Mathieu Obernosterer, Ingrid Laboratoire d'Océanographie Microbienne (LOMIC) Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Observatoire océanologique de Banyuls (OOB) Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) Ocean University of China (OUC) 2020 https://hal.science/hal-02917040 https://hal.science/hal-02917040/document https://hal.science/hal-02917040/file/Liu_2020_HAL.pdf https://doi.org/10.1111/1462-2920.15184 en eng HAL CCSD Society for Applied Microbiology and Wiley-Blackwell info:eu-repo/semantics/altIdentifier/doi/10.1111/1462-2920.15184 hal-02917040 https://hal.science/hal-02917040 https://hal.science/hal-02917040/document https://hal.science/hal-02917040/file/Liu_2020_HAL.pdf doi:10.1111/1462-2920.15184 info:eu-repo/semantics/OpenAccess ISSN: 1462-2912 EISSN: 1462-2920 Environmental Microbiology https://hal.science/hal-02917040 Environmental Microbiology, In press, ⟨10.1111/1462-2920.15184⟩ [SDV.MP]Life Sciences [q-bio]/Microbiology and Parasitology [SDV.EE.IEO]Life Sciences [q-bio]/Ecology environment/Symbiosis [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography info:eu-repo/semantics/article Journal articles 2020 ftsorbonneuniv https://doi.org/10.1111/1462-2920.15184 2024-07-25T23:47:58Z International audience 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 was 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 ASVs, 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 HAL Sorbonne Université Environmental Microbiology 22 9 3968 3984 |
institution |
Open Polar |
collection |
HAL Sorbonne Université |
op_collection_id |
ftsorbonneuniv |
language |
English |
topic |
[SDV.MP]Life Sciences [q-bio]/Microbiology and Parasitology [SDV.EE.IEO]Life Sciences [q-bio]/Ecology environment/Symbiosis [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
spellingShingle |
[SDV.MP]Life Sciences [q-bio]/Microbiology and Parasitology [SDV.EE.IEO]Life Sciences [q-bio]/Ecology environment/Symbiosis [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography Liu, Yan Blain, Stephane 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 |
topic_facet |
[SDV.MP]Life Sciences [q-bio]/Microbiology and Parasitology [SDV.EE.IEO]Life Sciences [q-bio]/Ecology environment/Symbiosis [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
description |
International audience 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 was 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 ASVs, 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 |
Laboratoire d'Océanographie Microbienne (LOMIC) Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Observatoire océanologique de Banyuls (OOB) Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) Ocean University of China (OUC) |
format |
Article in Journal/Newspaper |
author |
Liu, Yan Blain, Stephane Crispi, Olivier Rembauville, Mathieu Obernosterer, Ingrid |
author_facet |
Liu, Yan Blain, Stephane 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 |
HAL CCSD |
publishDate |
2020 |
url |
https://hal.science/hal-02917040 https://hal.science/hal-02917040/document https://hal.science/hal-02917040/file/Liu_2020_HAL.pdf https://doi.org/10.1111/1462-2920.15184 |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_source |
ISSN: 1462-2912 EISSN: 1462-2920 Environmental Microbiology https://hal.science/hal-02917040 Environmental Microbiology, In press, ⟨10.1111/1462-2920.15184⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1111/1462-2920.15184 hal-02917040 https://hal.science/hal-02917040 https://hal.science/hal-02917040/document https://hal.science/hal-02917040/file/Liu_2020_HAL.pdf doi:10.1111/1462-2920.15184 |
op_rights |
info:eu-repo/semantics/OpenAccess |
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 |
_version_ |
1810481238657466368 |