首页|Unique genes carried by abundant species enhance CH4 emissions during the growing season at the Tibetan Plateau

Unique genes carried by abundant species enhance CH4 emissions during the growing season at the Tibetan Plateau

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·CH4 emission rates followed an increased pattern during the growing season at Tibetan Plateau.·Unique genes carried by abundant species were positively correlated with CH4 emission rates.·Climate factors influenced CH4 emission rates by regulating microbial community and their genes.Microorganisms play pivotal roles in soil methane(CH4)emissions and their functional genes are origins of a key mechanism for soil CH4-cycling.However,understanding of the roles of specific genes(e.g.,unique or shared genes carried by species)underlying CH4-cycling remains elusive.Here,we measured CH4 emission rates and investigated variations in microbial community and the abundance of genes carried by species during the growing season in alpine meadow on the Tibetan Plateau.We discovered that CH4 emission rates increased from 394.4,745.9,and 1 092.7 pg CH4 m-2 h-1,in April,June,and August,respectively,and had a positive correlation with unique genes carried by abundant species during the growing season.Moreover,we found that unique genes carried by abundant species involved in methanogenesis processes have a higher abundance than methanotrophic processes.Further analysis indicated that climate factors(i.e.,mean monthly temperature(MMT)and mean monthly precipitation(MMP))influenced microbial community and their functional genes,and therefore affected the CH4 emission rates.Overall,the present study provides a novel insight into the variation of soil CH4 emissions from a functional gene perspective,highlighting the important roles of unique genes carried by abundant species in CH4 emissions in the Tibetan Plateau under seasonal variation.

soil CH4 emissionsunique genesabundant speciesCH4-cyclinggrowing season

Yue Liang、Liyuan He、Jieying Wang、Yanfang Liu、Wenying Wang、Chengjie Ren、Jun Wang、Yaoxin Guo、Ninglian Wang、Fazhu Zhao

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Shaanxi Key Laboratory of Earth Surface System and Environmental Carrying Capacity,Northwest University,Xi'an 710127,China

College of Urban and Environmental Sciences,Northwest University,Xi'an 710127,China

Department of Biology,San Diego State University,San Diego,CA 92182,USA

Key Laboratory of Biodiversity Formation Mechanism and Comprehensive Utilization in Qinghai-Tibet Plateau,School of Life Sciences,Qinghai Normal University,Xining 810008,China

College of Agronomy,Northwest A&F University,Yangling 712100,China

Carbon Neutrality College(Yulin),Northwest University,Xi'an 710127,China

The College of Life Sciences,Northwest University,Xi'an 710072,China

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National Natural Science Foundation of China2021 first funds for central government to guide local science and technology development in Qinghai ProvinceSecond Tibetan Plateau Scientific Expedition and Research ProgramSecond Tibetan Plateau Scientific Expedition and Research Program

422772842021ZY0022019QZKK0201022019OZKK0302

2024

10.1007/s42832-023-0202-6

土壤生态学快报(英文)

土壤生态学快报(英文)

ISSN：
年,卷(期)：2024.6(2)