Distribution of methanogenic and methanotrophic consortia at soil-water interfaces in rice paddies across climate zones

Wang, Sichu, Sun, Pengfei, Liu, Junzhuo, Xu, Ying, Dolfing, Jan and Wu, Yonghong (2023) Distribution of methanogenic and methanotrophic consortia at soil-water interfaces in rice paddies across climate zones. iScience, 26 (1). p. 105851. ISSN 2589-0042

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Official URL: https://doi.org/10.1016/j.isci.2022.105851


Periphytic biofilms (PB) at the soil-water interface contributes 7–38% of the methane emission from rice paddies, yet the biogeographical mechanism underlying and affecting the process remain elusive. In this study, rice fields along an edapho-vclimatic gradient were sampled, and the environmental drivers affecting distribution of methanogenic and methanotrophic communities were evaluated. The methanogenic and methanotrophic communities at soil-water interface showed less complex inter/intra-generic interactions than those in soil, and their relative abundances were weakly driven by spatial distance, soil organic carbon, soil total nitrogen and pH. The nutrient supply and buffering capacity of extracellular polymeric substance released by PB reduced their interaction and enhanced the resilience on edaphic environment changes. Climate affected soil metal content, extracellular polymeric substance content, and thus the methane-related communities, and caused geographical variation in the impacts of PB on methane emissions from rice paddies. This study facilitates our understanding of geographical differences in the contribution of PB to methane emission.

Item Type: Article
Additional Information: Funding Information: This work was supported by the National Natural Science Foundation of China ( 41825021 , 42177232 , 41701301 , 41961144010 and 31772396 ), the Natural Science Foundation of Jiangsu Province ( BZ2019015 and BE2020731 ), the National Key Research and Development Program ( 2021YFD1700803 ), and the Original Innovation Project of Chinese Academy of Sciences ( ZDBS-LY-DQC024 ).
Uncontrolled Keywords: Biogeoscience, Global carbon cycle, Microbiology
Subjects: C500 Microbiology
C900 Others in Biological Sciences
Department: Faculties > Engineering and Environment > Mechanical and Construction Engineering
Depositing User: Rachel Branson
Date Deposited: 17 Jan 2023 15:58
Last Modified: 17 Jan 2023 16:00
URI: https://nrl.northumbria.ac.uk/id/eprint/51191

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