Enrichment and Genomic Characterization of a N₂O-Reducing Chemolithoautotroph From a Deep-Sea Hydrothermal Vent.

ABSTRACT: Nitrous oxide (N₂O) is a greenhouse gas and also leads to stratospheric ozone depletion. In natural environments, only a single N₂O sink process is the microbial reduction of N₂O to N₂, which is mediated by nitrous oxide reductase (NosZ) encoded by nosZ gene. The nosZ phylogeny has two distinct clades, clade I and formerly overlooked clade II. In deep-sea hydrothermal environments, several members of the class Campylobacteria are shown to harbor clade II nosZ gene and perform the complete denitrification of nitrate to N₂; however, little is known about their ability to grow on exogenous N₂O as the sole electron acceptor. Here, we obtained an enrichment culture from a deep-sea hydrothermal vent in

SUBMITTER: Mino S 

PROVIDER: S-EPMC6279868 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature