Incomplete denitrification phenotypes in diverse Thermus species from diverse geothermal spring sediments and adjacent soils in southwest China.

ABSTRACT: A few members of the bacterial genus Thermus have been shown to be incomplete denitrifiers, terminating with nitrite (NO₂^-) or nitrous oxide (N₂O). However, the denitrification abilities of the genus as a whole remain poorly characterized. Here, we describe diverse denitrification phenotypes and genotypes of a collection of 24 strains representing ten species, all isolated from a variety of geothermal systems in China. Confirmed terminal products of nitrate reduction were nitrite or N₂O, while nitric oxide (NO) was inferred as the terminal product in some strains. Most strains produced N₂O; complete denitrification was not observed. Denitrification phenotypes were largely consistent with the presence of denitrification genes, and strai

SUBMITTER: Mefferd CC 

PROVIDER: S-EPMC9270275 | biostudies-literature | 2022 Jul

REPOSITORIES: biostudies-literature