Changing microbiome community structure and functional potential during permafrost thawing on the Tibetan Plateau

Tang, Xiaotong1; Zhang, Miao2; Fang, Zhengkun1; Yang, Qing2; Zhang, Wan2,3; Zhou, Jiaxing1; Zhao, Bixi2; Fan, Tongyu1; Wang, Congzhen1; Zhang, Chuanlun3; Xia, Yu2; Zheng, Yanhong1

2023-10-17

10.1093/femsec/fiad117

FEMS MICROBIOLOGY ECOLOGY   Impact Factor & Quartile

0168-6496

1574-6941

["Large amounts of carbon sequestered in permafrost on the Tibetan Plateau (TP) are becoming vulnerable to microbial decomposition in a warming world. However, knowledge about how the responsible microbial community responds to warming-induced permafrost thaw on the TP is still limited. This study aimed to conduct a comprehensive comparison of the microbial communities and their functional potential in the active layer of thawing permafrost on the TP. We found that the microbial communities were diverse and varied across soil profiles. The microbial diversity declined and the relative abundance of Chloroflexi, Bacteroidetes, Euryarchaeota, and Bathyarchaeota significantly increased with permafrost thawing. Moreover, warming reduced the similarity and stability of active layer microbial communities. The high-throughput qPCR results showed that the abundance of functional genes involved in liable carbon degradation and methanogenesis increased with permafrost thawing. Notably, the significantly increased mcrA gene abundance and the higher methanogens to methanotrophs ratio implied enhanced methanogenic activities during permafrost thawing. Overall, the composition and functional potentials of the active layer microbial community in the Tibetan permafrost region are susceptible to warming. These changes in the responsible microbial community may accelerate carbon degradation, particularly in the methane releases from alpine permafrost ecosystems on the TP.","Warming-induced permafrost thawing increased the abundance of anaerobic microorganisms and functional genes involved in labile carbon degradation and methane cycles, which could accelerate soil carbon degradation on TP."]

functional gene microbial community microbial network permafrost thaw Tibetan Plateau

SCI

English

Corresponding

This work was supported by the Natural Key Ramp;D Program of China (2018YFA0605800), National Natural Science Foundation of China Grants (41872031, 41372033, 42277103), the Key Scientific and Technological Team Project in Shaanxi Province, and funds from[2018YFA0605800] ; Natural Key Ramp;D Program of China["41872031","41372033","42277103"] ; Key Scientific and Technological Team Project in Shaanxi Province[SKLLQG1731]

Microbiology

Microbiology

WOS:001084203000004

OXFORD UNIV PRESS

MICROBIOLOGY

Web of Science

1.Northwest Univ, Dept Geol, State Key Lab Continental Dynam, 229 Taibai North Rd, Xian 710069, Shaanxi, Peoples R China
2.Southern Univ Sci & Technol, Coll Engn, Sch Environm Sci & Engn, Shenzhen 518055, Guangdong, Peoples R China
3.Southern Univ Sci & Technol, Dept Ocean Sci & Engn, Shenzhen Key Lab Marine Archaea Geoom, Shenzhen 518055, Guangdong, Peoples R China

Tang, Xiaotong,Zhang, Miao,Fang, Zhengkun,et al. Changing microbiome community structure and functional potential during permafrost thawing on the Tibetan Plateau[J]. FEMS MICROBIOLOGY ECOLOGY,2023,99(11).

Tang, Xiaotong.,Zhang, Miao.,Fang, Zhengkun.,Yang, Qing.,Zhang, Wan.,...&Zheng, Yanhong.(2023).Changing microbiome community structure and functional potential during permafrost thawing on the Tibetan Plateau.FEMS MICROBIOLOGY ECOLOGY,99(11).

Tang, Xiaotong,et al."Changing microbiome community structure and functional potential during permafrost thawing on the Tibetan Plateau".FEMS MICROBIOLOGY ECOLOGY 99.11(2023).