Potential role of nitrite-dependent anaerobic methane oxidation in methane consumption and nitrogen removal in Chinese paddy fields
文献类型： 外文期刊
作者： Yang, Wang-ting 1 ; Wang, Wei-qi 2 ; Shen, Li-dong 1 ; Bai, Ya-nan 1 ; Liu, Xin 1 ; Tian, Mao-hui 1 ; Wang, Chun 2 ; Feng, Yan-fang 3 ; Liu, Yang 4 ; Yang, Yu-ling 1 ; Liu, Jia-qi 1 ; Geng, Cai-yu 1 ;
作者机构： 1.Nanjing Univ Informat Sci & Technol, Inst Ecol, Collaborat Innovat Ctr Forecast & Evaluat Meteorol, Sch Appl Meteorol, Nanjing 210044, Peoples R China
2.Fujian Normal Univ, Key Lab Humid Subtrop Ecogeog Proc, Minist Educ, Fuzhou 350007, Peoples R China
3.Jiangsu Acad Agr Sci, Inst Agr Resources & Environm, Key Lab Agroenvironm Downstream Yangtze Plain, Minist Agr & Rural Affairs, Nanjing 210044, Peoples R China
4.Jiangsu Acad Agr Sci, Informat Ctr, Nanjing 210014, Peoples R China
关键词： Nitrite-dependent anaerobic methane oxidation; Methane consumption; Nitrogen removal; Community; Climate zones; Large-scale
期刊名称：SCIENCE OF THE TOTAL ENVIRONMENT （ 影响因子：10.753； 五年影响因子：10.237 ）
ISSN： 0048-9697
年卷期： 2022 年 838 卷
页码：
收录情况： SCI
摘要： Nitrite-dependent anaerobic methane oxidation (n-damo), catalyzed by bacteria closely related to Candidatus Methylomirabilis oxyfera, links the global carbon and nitrogen cycles. Currently, the contribution of n-damo in controlling methane emissions and nitrogen removal, and the key regulatory factors of this process in Chinese paddy fields are poorly known. Here, soil samples from 20 paddy fields located in different climate zones across China were collected to examine the n-damo activity and bacterial communities. The n-damo activity and bacterial abundance varied from 1.05 to 5.97 nmol CH4 g(-1) (dry soil) d(-1) and 2.59 x 10(5) to 2.50 x 107 copies g-1 dry soil, respectively. Based on the n-damo activity, it was estimated that approximately 0.91 Tg CH4 and 2.17 Tg N could be consumed annually via n-damo in Chinese paddy soils. The spatial variations in n-damo activity and community structure of n-damo bacteria were significantly (p < 0.05) affected by the soil ammonium content, labile organic carbon content and pH. Furthermore, significant differences in n-damo activity, bacterial abundance and community composition were
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