Deep ocean metagenomes provide insight into the metabolic architecture of bathypelagic microbial communities

descriptionPublicationkeyboard_double_arrow_right Article , Other literature type 21 May 2021Embargo end date: 21 May 2021 Belgium, United States, France, Spain, Switzerland, Belgium, Belgium, Saudi Arabia, Australia, Spain English Publisher:Springer Science and Business Media LLCJournal:Communications Biology, volume 4 (eissn: 2399-3642,

Copyright policy )Funded by:TARA | Tara Oceans

Authors: Silvia G. Acinas; Pablo Sánchez; Guillem Salazar; Francisco M. Cornejo-Castillo; Marta Sebastián; Ramiro Logares; Marta Royo-Llonch; +22 Authors

doi: 10.1038/s42003-021-02112-2 , 10.3929/ethz-b-000488398

pmid: 34021239

pmc: PMC8139981

handle: 10553/107460 , 10261/241901 , 2078.1/249249 , 10508/11551 , 20.500.11850/488398 , 10754/669234 , 2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/326866

Deep ocean metagenomes provide insight into the metabolic architecture of bathypelagic microbial communities

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Abstract

Abstract The deep sea, the largest ocean’s compartment, drives planetary-scale biogeochemical cycling. Yet, the functional exploration of its microbial communities lags far behind other environments. Here we analyze 58 metagenomes from tropical and subtropical deep oceans to generate the Malaspina Gene Database. Free-living or particle-attached lifestyles drive functional differences in bathypelagic prokaryotic communities, regardless of their biogeography. Ammonia and CO oxidation pathways are enriched in the free-living microbial communities and dissimilatory nitrate reduction to ammonium and H 2 oxidation pathways in the particle-attached, while the Calvin Benson-Bassham cycle is the most prevalent inorganic carbon fixation pathway in both size fractions. Reconstruction of the Malaspina Deep Metagenome-Assembled Genomes reveals unique non-cyanobacterial diazotrophic bacteria and chemolithoautotrophic prokaryotes. The widespread potential to grow both autotrophically and heterotrophically suggests that mixotrophy is an ecologically relevant trait in the deep ocean. These results expand our understanding of the functional microbial structure and metabolic capabilities of the largest Earth aquatic ecosystem.

Countries

Belgium, United States, France, Spain, Switzerland, Belgium, Belgium, Saudi Arabia, Australia, Spain

Related Organizations

Spanish National Research Council
Spain
PSL Research University
France
Spanish Institute of Oceanography
Spain
ETH Zurich
Switzerland
Mediterranean Institute of Oceanography
France

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Keywords

Life Sciences & Biomedicine - Other Topics, Biomedical and clinical sciences, Ecology and Evolutionary Biology, DNA VIRUSES, deep ocean metagenomes, 551, ammonia, Microbial ecology, CARBON SEQUESTRATION, aquatic ecosystem, [SDV.EE.ECO] Life Sciences [q-bio]/Ecology, environment/Ecosystems, Biology (General), Photosynthesis, [SDV.BIBS] Life Sciences [q-bio]/Quantitative Methods [q-bio.QM], Ecology, Environmental microbiology, Bacterial, Life Sciences, Biological Sciences, MARINE SNOW, Multidisciplinary Sciences, Biological sciences, Environmental microbiology; Microbial biooceanography; Microbial ecology, BACTERIA, 2510 Oceanografía, Science & Technology - Other Topics, SP-NOV., bathypelagic microbial communities, Life Sciences & Biomedicine, deep water, DNA, Bacterial, 570, Terrestrial and Aquatic Ecology, QH301-705.5, oxidation, MAJOR ROLE, exploration, Microbiology, DARK, Article, Carbon Cycle, ORGANIC-CARBON, BICARBONATE ASSIMILATION, Seawater, Life Below Water, [SDV.MP] Life Sciences [q-bio]/Microbiology and Parasitology, Biology, ammonium compounds, Microbial biooceanography, Science & Technology, Bacteria, 31 Biological sciences, 500, Généralités, DNA, 32 Biomedical and clinical sciences, metabolic architecture, Metagenome, ZOOPLANKTON FECAL PELLETS

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