Active Methanotrophs in Suboxic Alpine Swamp Soils of the Qinghai-Tibetan Plateau.

ABSTRACT: Methanotrophs are the only biofilters for reducing the flux of global methane (CH₄) emissions in water-logged wetlands. However, adaptation of aerobic methanotrophs to low concentrations of oxygen and nitrogen in typical swamps, such as that of the Qinghai-Tibetan Plateau, is poorly understood. In this study, we show that Methylobacter-like methanotrophs dominate methane oxidation and nitrogen fixation under suboxic conditions in alpine swamp soils. Following incubation with ¹³C-CH₄ and ¹⁵N-N₂ for 90 days under suboxic conditions with repeated flushing using an inert gas (i.e., argon), microbial carbon and nitrogen turnover was measured in swamp soils at different depths: 0-20 cm (top), 40-60 cm (intermediate), and 60-80 cm (dee

SUBMITTER: Mo Y 

PROVIDER: S-EPMC7689253 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature