Metaproteomic analysis decodes trophic interactions of microorganisms in the dark ocean.
Journal
Nature communications
ISSN: 2041-1723
Titre abrégé: Nat Commun
Pays: England
ID NLM: 101528555
Informations de publication
Date de publication:
30 Jul 2024
30 Jul 2024
Historique:
received:
14
07
2023
accepted:
24
07
2024
medline:
31
7
2024
pubmed:
31
7
2024
entrez:
30
7
2024
Statut:
epublish
Résumé
Proteins in the open ocean represent a significant source of organic matter, and their profiles reflect the metabolic activities of marine microorganisms. Here, by analyzing metaproteomic samples collected from the Pacific, Atlantic and Southern Ocean, we reveal size-fractionated patterns of the structure and function of the marine microbiota protein pool in the water column, particularly in the dark ocean (>200 m). Zooplankton proteins contributed three times more than algal proteins to the deep-sea community metaproteome. Gammaproteobacteria exhibited high metabolic activity in the deep-sea, contributing up to 30% of bacterial proteins. Close virus-host interactions of this taxon might explain the dominance of gammaproteobacterial proteins in the dissolved fraction. A high urease expression in nitrifiers suggested links between their dark carbon fixation and zooplankton urea production. In summary, our results uncover the taxonomic contribution of the microbiota to the oceanic protein pool, revealing protein fluxes from particles to the dissolved organic matter pool.
Identifiants
pubmed: 39080340
doi: 10.1038/s41467-024-50867-z
pii: 10.1038/s41467-024-50867-z
doi:
Substances chimiques
Bacterial Proteins
0
Proteome
0
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
6411Subventions
Organisme : Austrian Science Fund (Fonds zur Förderung der Wissenschaftlichen Forschung)
ID : I5942-N
Organisme : Austrian Science Fund (Fonds zur Förderung der Wissenschaftlichen Forschung)
ID : P34304-B
Organisme : Austrian Science Fund (Fonds zur Förderung der Wissenschaftlichen Forschung)
ID : TAI534
Organisme : Austrian Science Fund (Fonds zur Förderung der Wissenschaftlichen Forschung)
ID : P35248
Organisme : Austrian Science Fund (Fonds zur Förderung der Wissenschaftlichen Forschung)
ID : P35619-B
Organisme : Austrian Science Fund (Fonds zur Förderung der Wissenschaftlichen Forschung)
ID : P28781-B21
Organisme : Austrian Science Fund (Fonds zur Förderung der Wissenschaftlichen Forschung)
ID : AP3558721
Organisme : National Science Foundation (NSF)
ID : OCE 1634009
Informations de copyright
© 2024. The Author(s).
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