Exopolymeric Substances Control Microbial Community Structure and Function by Contributing to both C and Fe Nutrition in Fe-Limited Southern Ocean Provinces
International audience Organic ligands such as exopolymeric substances (EPS) are known to form complexes with iron (Fe) and modulate phytoplankton growth. However, the effect of organic ligands on bacterial and viral communities remains largely unknown. Here, we assessed how Fe associated with organ...
Published in: | Microorganisms |
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Online Access: | https://hal.inrae.fr/hal-03151884 https://hal.inrae.fr/hal-03151884/document https://hal.inrae.fr/hal-03151884/file/2020_Blanco_Microorganisms.pdf https://doi.org/10.3390/microorganisms8121980 |
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ftunivsavoie:oai:HAL:hal-03151884v1 2024-04-14T08:10:57+00:00 Exopolymeric Substances Control Microbial Community Structure and Function by Contributing to both C and Fe Nutrition in Fe-Limited Southern Ocean Provinces Blanco-Ameijeiras, Sonia Cabanes, Damien Cable, Rachel Trimborn, Scarlett Jacquet, Stéphan Wiegmann, Sonja Völkner, Christian Lelchat, Florian Bracher, Astrid Duhaime, Melissa Hassler, Christel Université de Genève = University of Geneva (UNIGE) University of Michigan Dearborn University of Michigan System Helmholtz Ctr Polar & Marine Res, Alfred Wegener Inst, D-27570 Bremerhaven, Germany University of Bremen Centre Alpin de Recherche sur les Réseaux Trophiques et Ecosystèmes Limniques (CARRTEL) Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) Ecole Polytechnique Fédérale de Lausanne (EPFL) University of Geneva FNS PP00P2-138955Helmholtz Association (Young Investigators Group EcoTrace) VH-NG-901 2020-12 https://hal.inrae.fr/hal-03151884 https://hal.inrae.fr/hal-03151884/document https://hal.inrae.fr/hal-03151884/file/2020_Blanco_Microorganisms.pdf https://doi.org/10.3390/microorganisms8121980 en eng HAL CCSD MDPI info:eu-repo/semantics/altIdentifier/doi/10.3390/microorganisms8121980 info:eu-repo/semantics/altIdentifier/pmid/33322799 hal-03151884 https://hal.inrae.fr/hal-03151884 https://hal.inrae.fr/hal-03151884/document https://hal.inrae.fr/hal-03151884/file/2020_Blanco_Microorganisms.pdf doi:10.3390/microorganisms8121980 PUBMED: 33322799 WOS: 000602616200001 http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess ISSN: 2076-2607 Microorganisms https://hal.inrae.fr/hal-03151884 Microorganisms, 2020, 8 (12), pp.1980. ⟨10.3390/microorganisms8121980⟩ virus prokaryotes phytoplankton Southern Ocean exopolymeric substances iron [SDV.MP]Life Sciences [q-bio]/Microbiology and Parasitology info:eu-repo/semantics/article Journal articles 2020 ftunivsavoie https://doi.org/10.3390/microorganisms8121980 2024-03-21T17:00:37Z International audience Organic ligands such as exopolymeric substances (EPS) are known to form complexes with iron (Fe) and modulate phytoplankton growth. However, the effect of organic ligands on bacterial and viral communities remains largely unknown. Here, we assessed how Fe associated with organic ligands influences phytoplankton, microbial, and viral abundances and their diversity in the Southern Ocean. While the particulate organic carbon (POC) was modulated by Fe chemistry and bioavailability in the Drake Passage, the abundance and diversity of microbes and viruses were not governed by Fe bioavailability. Only following amendments with bacterial EPS did bacterial abundances increase, while phenotypic alpha diversity of bacterial and viral communities decreased. The latter was accompanied by significantly enhanced POC, pointing toward the relief of C limitation or other drivers of the microbial loop. Based on the literature and our findings, we propose a conceptual framework by which EPS may affect phytoplankton, bacteria, and viruses. Given the importance of the Southern Ocean for Earth's climate as well as the prevalence of viruses and their increasingly recognized impact on marine biogeochemistry and C cycling; the role of microbe-virus interactions on primary productivity in the Southern Ocean needs urgent attention. Article in Journal/Newspaper Drake Passage Southern Ocean Université Savoie Mont Blanc: HAL Drake Passage Southern Ocean Microorganisms 8 12 1980 |
institution |
Open Polar |
collection |
Université Savoie Mont Blanc: HAL |
op_collection_id |
ftunivsavoie |
language |
English |
topic |
virus prokaryotes phytoplankton Southern Ocean exopolymeric substances iron [SDV.MP]Life Sciences [q-bio]/Microbiology and Parasitology |
spellingShingle |
virus prokaryotes phytoplankton Southern Ocean exopolymeric substances iron [SDV.MP]Life Sciences [q-bio]/Microbiology and Parasitology Blanco-Ameijeiras, Sonia Cabanes, Damien Cable, Rachel Trimborn, Scarlett Jacquet, Stéphan Wiegmann, Sonja Völkner, Christian Lelchat, Florian Bracher, Astrid Duhaime, Melissa Hassler, Christel Exopolymeric Substances Control Microbial Community Structure and Function by Contributing to both C and Fe Nutrition in Fe-Limited Southern Ocean Provinces |
topic_facet |
virus prokaryotes phytoplankton Southern Ocean exopolymeric substances iron [SDV.MP]Life Sciences [q-bio]/Microbiology and Parasitology |
description |
International audience Organic ligands such as exopolymeric substances (EPS) are known to form complexes with iron (Fe) and modulate phytoplankton growth. However, the effect of organic ligands on bacterial and viral communities remains largely unknown. Here, we assessed how Fe associated with organic ligands influences phytoplankton, microbial, and viral abundances and their diversity in the Southern Ocean. While the particulate organic carbon (POC) was modulated by Fe chemistry and bioavailability in the Drake Passage, the abundance and diversity of microbes and viruses were not governed by Fe bioavailability. Only following amendments with bacterial EPS did bacterial abundances increase, while phenotypic alpha diversity of bacterial and viral communities decreased. The latter was accompanied by significantly enhanced POC, pointing toward the relief of C limitation or other drivers of the microbial loop. Based on the literature and our findings, we propose a conceptual framework by which EPS may affect phytoplankton, bacteria, and viruses. Given the importance of the Southern Ocean for Earth's climate as well as the prevalence of viruses and their increasingly recognized impact on marine biogeochemistry and C cycling; the role of microbe-virus interactions on primary productivity in the Southern Ocean needs urgent attention. |
author2 |
Université de Genève = University of Geneva (UNIGE) University of Michigan Dearborn University of Michigan System Helmholtz Ctr Polar & Marine Res, Alfred Wegener Inst, D-27570 Bremerhaven, Germany University of Bremen Centre Alpin de Recherche sur les Réseaux Trophiques et Ecosystèmes Limniques (CARRTEL) Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) Ecole Polytechnique Fédérale de Lausanne (EPFL) University of Geneva FNS PP00P2-138955Helmholtz Association (Young Investigators Group EcoTrace) VH-NG-901 |
format |
Article in Journal/Newspaper |
author |
Blanco-Ameijeiras, Sonia Cabanes, Damien Cable, Rachel Trimborn, Scarlett Jacquet, Stéphan Wiegmann, Sonja Völkner, Christian Lelchat, Florian Bracher, Astrid Duhaime, Melissa Hassler, Christel |
author_facet |
Blanco-Ameijeiras, Sonia Cabanes, Damien Cable, Rachel Trimborn, Scarlett Jacquet, Stéphan Wiegmann, Sonja Völkner, Christian Lelchat, Florian Bracher, Astrid Duhaime, Melissa Hassler, Christel |
author_sort |
Blanco-Ameijeiras, Sonia |
title |
Exopolymeric Substances Control Microbial Community Structure and Function by Contributing to both C and Fe Nutrition in Fe-Limited Southern Ocean Provinces |
title_short |
Exopolymeric Substances Control Microbial Community Structure and Function by Contributing to both C and Fe Nutrition in Fe-Limited Southern Ocean Provinces |
title_full |
Exopolymeric Substances Control Microbial Community Structure and Function by Contributing to both C and Fe Nutrition in Fe-Limited Southern Ocean Provinces |
title_fullStr |
Exopolymeric Substances Control Microbial Community Structure and Function by Contributing to both C and Fe Nutrition in Fe-Limited Southern Ocean Provinces |
title_full_unstemmed |
Exopolymeric Substances Control Microbial Community Structure and Function by Contributing to both C and Fe Nutrition in Fe-Limited Southern Ocean Provinces |
title_sort |
exopolymeric substances control microbial community structure and function by contributing to both c and fe nutrition in fe-limited southern ocean provinces |
publisher |
HAL CCSD |
publishDate |
2020 |
url |
https://hal.inrae.fr/hal-03151884 https://hal.inrae.fr/hal-03151884/document https://hal.inrae.fr/hal-03151884/file/2020_Blanco_Microorganisms.pdf https://doi.org/10.3390/microorganisms8121980 |
geographic |
Drake Passage Southern Ocean |
geographic_facet |
Drake Passage Southern Ocean |
genre |
Drake Passage Southern Ocean |
genre_facet |
Drake Passage Southern Ocean |
op_source |
ISSN: 2076-2607 Microorganisms https://hal.inrae.fr/hal-03151884 Microorganisms, 2020, 8 (12), pp.1980. ⟨10.3390/microorganisms8121980⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.3390/microorganisms8121980 info:eu-repo/semantics/altIdentifier/pmid/33322799 hal-03151884 https://hal.inrae.fr/hal-03151884 https://hal.inrae.fr/hal-03151884/document https://hal.inrae.fr/hal-03151884/file/2020_Blanco_Microorganisms.pdf doi:10.3390/microorganisms8121980 PUBMED: 33322799 WOS: 000602616200001 |
op_rights |
http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.3390/microorganisms8121980 |
container_title |
Microorganisms |
container_volume |
8 |
container_issue |
12 |
container_start_page |
1980 |
_version_ |
1796308618215161856 |