Temporal and environmental factors drive community structure and function of methanotrophs in volcanic forest soils

Tokyo

2024

13 S.

Bandaufführung

13225S

40004562

Methanotrophs, organisms that obtain oxygen by oxidizing methane, are recognized as the only known biological sink for atmospheric CH4, and forest soil methanotrophs play crucial roles in mitigating global warming. The succession patterns of methanotrophic communities and functions in Wudalianchi volcano forest soils could provide a basis for the study of evolutionary mechanisms between soil microorganisms, the environment, and carbon cycling of temperate forest ecosystems under climate change. In this study, the characteristics and drivers of methanotrophic community structure and function of two volcanic soils at different stages of development are analyzed, including an old volcano and a new volcano, which most recently erupted 300 years and 17 − 19 × 105 years ago, respectively, and a non-volcano hills as control, based on space for time substitution and Miseq sequencing and bioinformation technology. The results showed that CH4 fluxes were significantly higher in old-stage volcano forest soilsKeywords: Methanotrophs; pmoA; Soil development stage; Volcanoes; Forest soils