Seasonal shifts in Fe-acquisition strategies in Southern Ocean microbial communities revealed by metagenomics and autonomous sampling
Iron (Fe) governs the cycling of organic carbon in large parts of the Southern Ocean. The strategies of diverse microbes to acquire the different chemical forms of Fe under seasonally changing organic carbon regimes remain, however, poorly understood. Here, we report high-resolution seasonal metagen...
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2023
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Online Access: | https://archimer.ifremer.fr/doc/00836/94758/102280.pdf https://doi.org/10.1111/1462-2920.16397 https://archimer.ifremer.fr/doc/00836/94758/ |
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ftarchimer:oai:archimer.ifremer.fr:94758 2024-06-09T07:49:42+00:00 Seasonal shifts in Fe-acquisition strategies in Southern Ocean microbial communities revealed by metagenomics and autonomous sampling Zhang, Rui Debeljak, Pavla Blain, Stéphane Obernosterer, Ingrid 2023-10 application/pdf https://archimer.ifremer.fr/doc/00836/94758/102280.pdf https://doi.org/10.1111/1462-2920.16397 https://archimer.ifremer.fr/doc/00836/94758/ eng eng Wiley / Blackwell https://archimer.ifremer.fr/doc/00836/94758/102280.pdf doi:10.1111/1462-2920.16397 https://archimer.ifremer.fr/doc/00836/94758/ info:eu-repo/semantics/openAccess restricted use Environmental Microbiology (1462-2912) (Wiley / Blackwell), 2023-10 , Vol. 25 , N. 10 , P. 1816-1829 text Article info:eu-repo/semantics/article 2023 ftarchimer https://doi.org/10.1111/1462-2920.16397 2024-05-16T09:24:32Z Iron (Fe) governs the cycling of organic carbon in large parts of the Southern Ocean. The strategies of diverse microbes to acquire the different chemical forms of Fe under seasonally changing organic carbon regimes remain, however, poorly understood. Here, we report high-resolution seasonal metagenomic observations from the region off Kerguelen Island (Indian Sector of the Southern Ocean) where natural Fe-fertilization induces consecutive spring and summer phytoplankton blooms. Our data illustrate pronounced, but distinct seasonal patterns in the abundance of genes implicated in the transport of different forms of Fe and organic substrates, of siderophore biosynthesis and carbohydrate-active enzymes. The seasonal dynamics suggest a temporal decoupling in the prokaryotic requirements of Fe and organic carbon during the spring phytoplankton bloom and a concerted access to these resources after the summer bloom. Taxonomic assignments revealed differences in the prokaryotic groups harbouring genes of a given Fe-related category and pronounced seasonal successions were observed. Using MAGs we could decipher the respective Fe- and organic substrate-related genes of individual taxa assigned to abundant groups. The ecological strategies related to Fe-acquisition provide insights on how this element could shape microbial community composition with potential implications on organic matter transformations in the Southern Ocean. Article in Journal/Newspaper Southern Ocean Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) Southern Ocean Kerguelen Indian Kerguelen Island ENVELOPE(69.500,69.500,-49.250,-49.250) Environmental Microbiology 25 10 1816 1829 |
institution |
Open Polar |
collection |
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) |
op_collection_id |
ftarchimer |
language |
English |
description |
Iron (Fe) governs the cycling of organic carbon in large parts of the Southern Ocean. The strategies of diverse microbes to acquire the different chemical forms of Fe under seasonally changing organic carbon regimes remain, however, poorly understood. Here, we report high-resolution seasonal metagenomic observations from the region off Kerguelen Island (Indian Sector of the Southern Ocean) where natural Fe-fertilization induces consecutive spring and summer phytoplankton blooms. Our data illustrate pronounced, but distinct seasonal patterns in the abundance of genes implicated in the transport of different forms of Fe and organic substrates, of siderophore biosynthesis and carbohydrate-active enzymes. The seasonal dynamics suggest a temporal decoupling in the prokaryotic requirements of Fe and organic carbon during the spring phytoplankton bloom and a concerted access to these resources after the summer bloom. Taxonomic assignments revealed differences in the prokaryotic groups harbouring genes of a given Fe-related category and pronounced seasonal successions were observed. Using MAGs we could decipher the respective Fe- and organic substrate-related genes of individual taxa assigned to abundant groups. The ecological strategies related to Fe-acquisition provide insights on how this element could shape microbial community composition with potential implications on organic matter transformations in the Southern Ocean. |
format |
Article in Journal/Newspaper |
author |
Zhang, Rui Debeljak, Pavla Blain, Stéphane Obernosterer, Ingrid |
spellingShingle |
Zhang, Rui Debeljak, Pavla Blain, Stéphane Obernosterer, Ingrid Seasonal shifts in Fe-acquisition strategies in Southern Ocean microbial communities revealed by metagenomics and autonomous sampling |
author_facet |
Zhang, Rui Debeljak, Pavla Blain, Stéphane Obernosterer, Ingrid |
author_sort |
Zhang, Rui |
title |
Seasonal shifts in Fe-acquisition strategies in Southern Ocean microbial communities revealed by metagenomics and autonomous sampling |
title_short |
Seasonal shifts in Fe-acquisition strategies in Southern Ocean microbial communities revealed by metagenomics and autonomous sampling |
title_full |
Seasonal shifts in Fe-acquisition strategies in Southern Ocean microbial communities revealed by metagenomics and autonomous sampling |
title_fullStr |
Seasonal shifts in Fe-acquisition strategies in Southern Ocean microbial communities revealed by metagenomics and autonomous sampling |
title_full_unstemmed |
Seasonal shifts in Fe-acquisition strategies in Southern Ocean microbial communities revealed by metagenomics and autonomous sampling |
title_sort |
seasonal shifts in fe-acquisition strategies in southern ocean microbial communities revealed by metagenomics and autonomous sampling |
publisher |
Wiley / Blackwell |
publishDate |
2023 |
url |
https://archimer.ifremer.fr/doc/00836/94758/102280.pdf https://doi.org/10.1111/1462-2920.16397 https://archimer.ifremer.fr/doc/00836/94758/ |
long_lat |
ENVELOPE(69.500,69.500,-49.250,-49.250) |
geographic |
Southern Ocean Kerguelen Indian Kerguelen Island |
geographic_facet |
Southern Ocean Kerguelen Indian Kerguelen Island |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_source |
Environmental Microbiology (1462-2912) (Wiley / Blackwell), 2023-10 , Vol. 25 , N. 10 , P. 1816-1829 |
op_relation |
https://archimer.ifremer.fr/doc/00836/94758/102280.pdf doi:10.1111/1462-2920.16397 https://archimer.ifremer.fr/doc/00836/94758/ |
op_rights |
info:eu-repo/semantics/openAccess restricted use |
op_doi |
https://doi.org/10.1111/1462-2920.16397 |
container_title |
Environmental Microbiology |
container_volume |
25 |
container_issue |
10 |
container_start_page |
1816 |
op_container_end_page |
1829 |
_version_ |
1801382452742062080 |