Electron shuttles facilitate anaerobic methane oxidation coupled to nitrous oxide reduction in paddy soil

被引：13

作者：

Zhang, Yaohong ^{[1
]}

Wang, Fangyuan ^{[1
,2
]}

Jia, Zhongjun ^{[2
]}

机构：

[1] Nanjing Univ Informat Sci & Technol, Collaborat Innovat Ctr Forecast & Evaluat Meteoro, Sch Appl Meteorol, Jiangsu Key Lab Agr Meteorol, Nanjing 210044, Peoples R China

[2] Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, Nanjing 210008, Peoples R China

来源：

SOIL BIOLOGY & BIOCHEMISTRY | 2021年 / 153卷

基金：

中国国家自然科学基金;

关键词：

Anaerobic methane oxidation; Electron shuttle; Nitrous oxide; Paddy soil;

D O I：

10.1016/j.soilbio.2020.108091

中图分类号：

S15 [土壤学];

学科分类号：

0903 ; 090301 ;

摘要：

Anaerobic oxidation of methane (AOM) coupled with simultaneous consumption of nitrous oxide (N2O) has been recently reported, but the underlying coupling mechanism remains unclear. Here, we investigated N2O-mediated AOM in paddy soil under amendment of electron shuttles (anthraquinone-2,6-disulphonate and methylviologen). Sixty-day anaerobic incubation showed that N2O-mediated AOM occurred in paddy soil, and that electron shuttles stimulated AOM coupled to N2O reduction. Approximate 60% of (CH4)-C-13-C was converted into soil organic matter in paddy soil during anaerobic oxidation. Our results suggest that electron shuttles may play important roles in mitigating the emission of greenhouse gases (CH4 and N2O) and increasing organic matter in paddy soils.

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页数：4

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