Respiration and growth of Paracoccus denitrificans R-1 with nitrous oxide as an electron acceptor.

ABSTRACT: In the nitrogen biogeochemical cycle, the reduction of nitrous oxide (N₂O) to N₂ by N₂O reductase, which is encoded by nosZ gene, is the only biological pathway for N₂O consumption. In this study, we successfully isolated a strain of denitrifying Paracoccus denitrificans R-1 from sewage treatment plant sludge. This strain has strong N₂O reduction capability, and the average N₂O reduction rate was 5.10 ± 0.11 × 10^-9 µmol·h^-1·cell^-1 under anaerobic condition in a defined medium. This reduction was accompanied by the stoichiometric consumption of acetate over time when N₂O served as the sole electron acceptor and the reduction can yield energy to support microbial growth

SUBMITTER: Zhou J 

PROVIDER: S-EPMC11237620 | biostudies-literature | 2024 Jun

REPOSITORIES: biostudies-literature