Partitioning of the denitrification pathway and other nitrite metabolisms within global oxygen deficient zones.

ABSTRACT: Oxygen deficient zones (ODZs) account for about 30% of total oceanic fixed nitrogen loss via processes including denitrification, a microbially mediated pathway proceeding stepwise from NO₃^- to N₂. This process may be performed entirely by complete denitrifiers capable of all four enzymatic steps, but many organisms possess only partial denitrification pathways, either producing or consuming key intermediates such as the greenhouse gas N₂O. Metagenomics and marker gene surveys have revealed a diversity of denitrification genes within ODZs, but whether these genes co-occur within complete or partial denitrifiers and the identities of denitrifying taxa remain open questions. We assemble genomes from metagenomes spanning the ETNP and Arabian Sea, an

SUBMITTER: Zhang IH 

PROVIDER: S-EPMC10359470 | biostudies-literature | 2023 Jul

REPOSITORIES: biostudies-literature