Suppression of AMF accelerates N₂O emission by altering soil bacterial community and genes abundance under varied precipitation conditions in a semiarid grassland.

ABSTRACT: Nitrous oxide (N₂O) is one of the most important greenhouse gases contributing to global climate warming. Recently, studies have shown that arbuscular mycorrhizal fungi (AMF) could reduce N₂O emissions in terrestrial ecosystems; however, the microbial mechanisms of how AMF reduces N₂O emissions under climate change are still not well understood. We tested the influence of AMF on N₂O emissions by setting up a gradient of precipitation intensity (+50%, +30%, ambient (0%), -30%, -50%, and -70%) and manipulating the presence or exclusion of AMF hyphae in a semiarid grassland located in northeast China. Our results showed that N₂O fluxes dramatically declined with the decrease in precipitation gradient during the peak growing season (June-A

SUBMITTER: Li J 

PROVIDER: S-EPMC9393504 | biostudies-literature | 2022

REPOSITORIES: biostudies-literature