Warming Shapes nirS- and nosZ-Type Denitrifier Communities and Stimulates N₂O Emission in Acidic Paddy Soil.

ABSTRACT: Warming strongly stimulates soil nitrous oxide (N₂O) emission, contributing to the global warming trend. Submerged paddy soils exhibit huge N₂O emission potential; however, the N₂O emission pathway and underlying mechanisms for warming are not clearly understood. We conducted an incubation experiment using ¹⁵N to investigate the dynamics of N₂O emission at controlled temperatures (5, 15, 25, and 35°C) in 125% water-filled pore space. The community structures of nitrifiers and denitrifiers were determined via high-throughput sequencing of functional genes. Our results showed that elevated temperature sharply enhanced soil N₂O emission from submerged paddy soil. Denitrification was the main contributor, accounting for more tha

SUBMITTER: Xing XY 

PROVIDER: S-EPMC8174758 | biostudies-literature | 2021 May

REPOSITORIES: biostudies-literature