Community Composition of Nitrous Oxide Consuming Bacteria in the Oxygen Minimum Zone of the Eastern Tropical South Pacific.

ABSTRACT: The ozone-depleting and greenhouse gas, nitrous oxide (N₂O), is mainly consumed by the microbially mediated anaerobic process, denitrification. N₂O consumption is the last step in canonical denitrification, and is also the least O₂ tolerant step. Community composition of total and active N₂O consuming bacteria was analyzed based on total (DNA) and transcriptionally active (RNA) nitrous oxide reductase (nosZ) genes using a functional gene microarray. The total and active nosZ communities were dominated by a limited number of nosZ archetypes, affiliated with bacteria from marine, soil and marsh environments. In addition to nosZ genes related to those of known marine denitrifiers, atypical nosZ genes, related to th

SUBMITTER: Sun X 

PROVIDER: S-EPMC5487485 | biostudies-literature | 2017

REPOSITORIES: biostudies-literature