FN Archimer Export Format PT J TI Microbial iron and carbon metabolism as revealed by taxonomy-specific functional diversity in the Southern Ocean BT AF Sun, Ying Debeljak, Pavla Obernosterer, Ingrid AS 1:1;2:1,2;3:1; FF 1:;2:;3:; C1 CNRS, Sorbonne Université, Laboratoire d’Océanographie Microbienne, LOMIC, F-66650, Banyuls/mer, France University of Vienna, Department of Functional and Evolutionary Ecology, A-1090, Vienna, Austria C2 CNRS, FRANCE UNIV VIENNA, AUSTRIA IF 11.217 TC 7 UR https://archimer.ifremer.fr/doc/00693/80483/83626.pdf https://archimer.ifremer.fr/doc/00693/80483/83648.docx https://archimer.ifremer.fr/doc/00693/80483/83649.pdf https://archimer.ifremer.fr/doc/00693/80483/83651.pdf https://archimer.ifremer.fr/doc/00693/80483/83652.pdf https://archimer.ifremer.fr/doc/00693/80483/83653.pdf https://archimer.ifremer.fr/doc/00693/80483/83654.pdf https://archimer.ifremer.fr/doc/00693/80483/83655.pdf https://archimer.ifremer.fr/doc/00693/80483/83656.pdf https://archimer.ifremer.fr/doc/00693/80483/83657.pdf https://archimer.ifremer.fr/doc/00693/80483/83658.pdf https://archimer.ifremer.fr/doc/00693/80483/83659.pdf https://archimer.ifremer.fr/doc/00693/80483/83660.pdf https://archimer.ifremer.fr/doc/00693/80483/83661.pdf https://archimer.ifremer.fr/doc/00693/80483/83662.pdf https://archimer.ifremer.fr/doc/00693/80483/83663.pdf https://archimer.ifremer.fr/doc/00693/80483/83664.xlsx https://archimer.ifremer.fr/doc/00693/80483/83665.xlsx https://archimer.ifremer.fr/doc/00693/80483/83666.xlsx https://archimer.ifremer.fr/doc/00693/80483/83667.xlsx https://archimer.ifremer.fr/doc/00693/80483/83668.xlsx https://archimer.ifremer.fr/doc/00693/80483/83669.xlsx LA English DT Article CR MOBYDICK-THEMISTO BO Marion Dufresne AB Marine microbes are major drivers of all elemental cycles. The processing of organic carbon by heterotrophic prokaryotes is tightly coupled to the availability of the trace element iron in large regions of the Southern Ocean. However, the functional diversity in iron and carbon metabolism within diverse communities remains a major unresolved issue. Using novel Southern Ocean meta-omics resources including 133 metagenome-assembled genomes (MAGs), we show a mosaic of taxonomy-specific ecological strategies in naturally iron-fertilized and high nutrient low chlorophyll (HNLC) waters. Taxonomic profiling revealed apparent community shifts across contrasting nutrient regimes. Community-level and genome-resolved metatranscriptomics evidenced a moderate association between taxonomic affiliations and iron and carbon-related functional roles. Diverse ecological strategies emerged when considering the central metabolic pathways of individual MAGs. Closely related lineages appear to adapt to distinct ecological niches, based on their distribution and gene regulation patterns. Our in-depth observations emphasize the complex interplay between the genetic repertoire of individual taxa and their environment and how this shapes prokaryotic responses to iron and organic carbon availability in the Southern Ocean. PY 2021 PD OCT SO Isme Journal SN 1751-7362 PU Springer Science and Business Media LLC VL 15 IS 10 UT 000646545900001 BP 2933 EP 2946 DI 10.1038/s41396-021-00973-3 ID 80483 ER EF