Reduced trace gas oxidizers as a response to organic carbon availability linked to oligotrophs in desert fertile islands.

ABSTRACT: Atmospheric trace gases, such as H₂ and CO, are important energy sources for microbial growth and maintenance in various ecosystems, especially in arid deserts with little organic substrate. Nonetheless, the impact of soil organic C availability on microbial trace gas oxidation and the underlying mechanisms are unclear at the community level. This study investigated the energy and life-history strategies of soil microbiomes along an organic C gradient inside and out of Hedysarum scoparium islands dispersed in the Mu Us Desert, China. Metagenomic analysis showed that with increasing organic C availability from bare areas into "fertile islands", the abundance of trace gas oxidizers (TGOs) decreased, but that of trace gas nonoxidizers (TGNOs) increased. The variation in their abund

SUBMITTER: Li S 

PROVIDER: S-EPMC10356767 | biostudies-literature | 2023 Aug

REPOSITORIES: biostudies-literature