Exploring the Microdiversity Within Marine Bacterial Taxa: Toward an Integrated Biogeography in the Southern Ocean
International audience Most of the microbial biogeographic patterns in the oceans have been depicted at the whole community level, leaving out finer taxonomic resolution (i.e., microdiversity) that is crucial to conduct intra-population phylogeographic study, as commonly done for macroorganisms. Her...
Published in: | Frontiers in Microbiology |
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Online Access: | https://hal-amu.archives-ouvertes.fr/hal-03663126 https://hal-amu.archives-ouvertes.fr/hal-03663126/document https://hal-amu.archives-ouvertes.fr/hal-03663126/file/fmicb-12-703792.pdf https://doi.org/10.3389/fmicb.2021.703792 |
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ftunivnantes:oai:HAL:hal-03663126v1 2023-05-15T14:03:53+02:00 Exploring the Microdiversity Within Marine Bacterial Taxa: Toward an Integrated Biogeography in the Southern Ocean Schwob, Guillaume Segovia, Nicolás González-Wevar, Claudio Cabrol, Léa Orlando, Julieta Poulin, Elie Institut méditerranéen d'océanologie (MIO) Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS) 2021-07-14 https://hal-amu.archives-ouvertes.fr/hal-03663126 https://hal-amu.archives-ouvertes.fr/hal-03663126/document https://hal-amu.archives-ouvertes.fr/hal-03663126/file/fmicb-12-703792.pdf https://doi.org/10.3389/fmicb.2021.703792 en eng HAL CCSD Frontiers Media info:eu-repo/semantics/altIdentifier/doi/10.3389/fmicb.2021.703792 hal-03663126 https://hal-amu.archives-ouvertes.fr/hal-03663126 https://hal-amu.archives-ouvertes.fr/hal-03663126/document https://hal-amu.archives-ouvertes.fr/hal-03663126/file/fmicb-12-703792.pdf doi:10.3389/fmicb.2021.703792 IRD: fdi:010082637 PUBMEDCENTRAL: PMC8317501 http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess ISSN: 1664-302X EISSN: 1664-302X Frontiers in Microbiology https://hal-amu.archives-ouvertes.fr/hal-03663126 Frontiers in Microbiology, Frontiers Media, 2021, 12, ⟨10.3389/fmicb.2021.703792⟩ [SDE]Environmental Sciences info:eu-repo/semantics/article Journal articles 2021 ftunivnantes https://doi.org/10.3389/fmicb.2021.703792 2022-08-02T22:55:06Z International audience Most of the microbial biogeographic patterns in the oceans have been depicted at the whole community level, leaving out finer taxonomic resolution (i.e., microdiversity) that is crucial to conduct intra-population phylogeographic study, as commonly done for macroorganisms. Here, we present a new approach to unravel the bacterial phylogeographic patterns combining community-wide survey by 16S rRNA gene metabarcoding and intra-species resolution through the oligotyping method, allowing robust estimations of genetic and phylogeographic indices, and migration parameters. As a proof-of-concept, we focused on the bacterial genus Spirochaeta across three distant biogeographic provinces of the Southern Ocean; maritime Antarctica, sub-Antarctic Islands, and Patagonia. Each targeted Spirochaeta operational taxonomic units were characterized by a substantial intrapopulation microdiversity, and significant genetic differentiation and phylogeographic structure among the three provinces. Gene flow estimations among Spirochaeta populations support the role of the Antarctic Polar Front as a biogeographic barrier to bacterial dispersal between Antarctic and sub-Antarctic provinces. Conversely, the Antarctic Circumpolar Current appears as the main driver of gene flow, connecting sub-Antarctic Islands with Patagonia and maritime Antarctica. Additionally, historical processes (drift and dispersal limitation) govern up to 86% of the spatial turnover among Spirochaeta populations. Overall, our approach bridges the gap between microbial and macrobial ecology by revealing strong congruency with macroorganisms distribution patterns at the populational level, shaped by the same oceanographic structures and ecological processes. Article in Journal/Newspaper Antarc* Antarctic Antarctica Southern Ocean Université de Nantes: HAL-UNIV-NANTES Antarctic Southern Ocean The Antarctic Patagonia Frontiers in Microbiology 12 |
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Université de Nantes: HAL-UNIV-NANTES |
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ftunivnantes |
language |
English |
topic |
[SDE]Environmental Sciences |
spellingShingle |
[SDE]Environmental Sciences Schwob, Guillaume Segovia, Nicolás González-Wevar, Claudio Cabrol, Léa Orlando, Julieta Poulin, Elie Exploring the Microdiversity Within Marine Bacterial Taxa: Toward an Integrated Biogeography in the Southern Ocean |
topic_facet |
[SDE]Environmental Sciences |
description |
International audience Most of the microbial biogeographic patterns in the oceans have been depicted at the whole community level, leaving out finer taxonomic resolution (i.e., microdiversity) that is crucial to conduct intra-population phylogeographic study, as commonly done for macroorganisms. Here, we present a new approach to unravel the bacterial phylogeographic patterns combining community-wide survey by 16S rRNA gene metabarcoding and intra-species resolution through the oligotyping method, allowing robust estimations of genetic and phylogeographic indices, and migration parameters. As a proof-of-concept, we focused on the bacterial genus Spirochaeta across three distant biogeographic provinces of the Southern Ocean; maritime Antarctica, sub-Antarctic Islands, and Patagonia. Each targeted Spirochaeta operational taxonomic units were characterized by a substantial intrapopulation microdiversity, and significant genetic differentiation and phylogeographic structure among the three provinces. Gene flow estimations among Spirochaeta populations support the role of the Antarctic Polar Front as a biogeographic barrier to bacterial dispersal between Antarctic and sub-Antarctic provinces. Conversely, the Antarctic Circumpolar Current appears as the main driver of gene flow, connecting sub-Antarctic Islands with Patagonia and maritime Antarctica. Additionally, historical processes (drift and dispersal limitation) govern up to 86% of the spatial turnover among Spirochaeta populations. Overall, our approach bridges the gap between microbial and macrobial ecology by revealing strong congruency with macroorganisms distribution patterns at the populational level, shaped by the same oceanographic structures and ecological processes. |
author2 |
Institut méditerranéen d'océanologie (MIO) Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Schwob, Guillaume Segovia, Nicolás González-Wevar, Claudio Cabrol, Léa Orlando, Julieta Poulin, Elie |
author_facet |
Schwob, Guillaume Segovia, Nicolás González-Wevar, Claudio Cabrol, Léa Orlando, Julieta Poulin, Elie |
author_sort |
Schwob, Guillaume |
title |
Exploring the Microdiversity Within Marine Bacterial Taxa: Toward an Integrated Biogeography in the Southern Ocean |
title_short |
Exploring the Microdiversity Within Marine Bacterial Taxa: Toward an Integrated Biogeography in the Southern Ocean |
title_full |
Exploring the Microdiversity Within Marine Bacterial Taxa: Toward an Integrated Biogeography in the Southern Ocean |
title_fullStr |
Exploring the Microdiversity Within Marine Bacterial Taxa: Toward an Integrated Biogeography in the Southern Ocean |
title_full_unstemmed |
Exploring the Microdiversity Within Marine Bacterial Taxa: Toward an Integrated Biogeography in the Southern Ocean |
title_sort |
exploring the microdiversity within marine bacterial taxa: toward an integrated biogeography in the southern ocean |
publisher |
HAL CCSD |
publishDate |
2021 |
url |
https://hal-amu.archives-ouvertes.fr/hal-03663126 https://hal-amu.archives-ouvertes.fr/hal-03663126/document https://hal-amu.archives-ouvertes.fr/hal-03663126/file/fmicb-12-703792.pdf https://doi.org/10.3389/fmicb.2021.703792 |
geographic |
Antarctic Southern Ocean The Antarctic Patagonia |
geographic_facet |
Antarctic Southern Ocean The Antarctic Patagonia |
genre |
Antarc* Antarctic Antarctica Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctica Southern Ocean |
op_source |
ISSN: 1664-302X EISSN: 1664-302X Frontiers in Microbiology https://hal-amu.archives-ouvertes.fr/hal-03663126 Frontiers in Microbiology, Frontiers Media, 2021, 12, ⟨10.3389/fmicb.2021.703792⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.3389/fmicb.2021.703792 hal-03663126 https://hal-amu.archives-ouvertes.fr/hal-03663126 https://hal-amu.archives-ouvertes.fr/hal-03663126/document https://hal-amu.archives-ouvertes.fr/hal-03663126/file/fmicb-12-703792.pdf doi:10.3389/fmicb.2021.703792 IRD: fdi:010082637 PUBMEDCENTRAL: PMC8317501 |
op_rights |
http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.3389/fmicb.2021.703792 |
container_title |
Frontiers in Microbiology |
container_volume |
12 |
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1766274754602336256 |