Biogeochemical Implications of N₂O-Reducing Thermophilic Campylobacteria in Deep-Sea Vent Fields, and the Description of Nitratiruptor labii sp. nov.

ABSTRACT: Nitrous oxide (N₂O) is a potent greenhouse gas and has significantly increased in the atmosphere. Deep-sea hydrothermal fields are representative environments dominated by mesophilic to thermophilic members of the class Campylobacteria that possess clade II nosZ encoding nitrous oxide reductase. Here, we report a strain HRV44^T representing the first thermophilic campylobacterium capable of growth by H₂ oxidation coupled to N₂O reduction. On the basis of physiological and genomic properties, it is proposed that strain HRV44^T (=JCM 34002 = DSM 111345) represents a novel species of the genus Nitratiruptor, Nitratiruptor labii sp. nov. The comparison of the N₂O consumption ability of strain HRV44

SUBMITTER: Fukushi M 

PROVIDER: S-EPMC7476070 | biostudies-literature | 2020 Sep

REPOSITORIES: biostudies-literature