Active metabolic pathways of anaerobic methane oxidation in paddy soils

doi:10.1016/j.soilbio.2021.108215

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	Active metabolic pathways of anaerobic methane oxidation in paddy soils
	Fan,Lichao ; Schneider,Dominik ; Dippold,Michaela A.; Poehlein,Anja ; Wu,Weichao ; Gui,Heng ; Ge,Tida ; Wu,Jinshui ; Thiel,Volker ; Kuzyakov,Yakov ; Dorodnikov,Maxim
	2021
发表期刊	SOIL BIOLOGY & BIOCHEMISTRY
ISSN	0038-0717
卷号	156 页码:108215
摘要	Anaerobic oxidation of methane (AOM) is a globally important CH4 sink. However, the AOM pathways in paddy soils, the largest agricultural source of methane emissions (31 Mio tons per year) are not yet well described. Here, a combination of C-13 isotope tracer, phospholipid fatty acids (PLFA) analyses, and microbial community analysis was used to identify AOM pathways in fertilized (pig manure, biochar, NPK, and the control) paddy soils amended with alternative electron acceptors (AEAs) (NO3-, Fe3+, SO42-, humic acids, and the reference without AEAs addition). After 84 days of anaerobic incubation, the microbial co-occurrence network got tightened and became more complex relative to unincubated samples. Fertilization and AEAs addition led to a strong divergence of the microbial community structure as indicated by abundances of AOM-related microbiota and C-13 incorporation into microbial PLFA, thus suggesting an environmental niche differentiation of AOM-involved microorganisms. Comparative analyses revealed a set of major and minor AOM pathways with synergistic relations to complementary anaerobic microbial groups. NO3--driven AOM, performed by members of the candidate group ANME-2d, was the major AOM pathway. Minor AOM pathways involved NO2- reduction by NC10, reduction of humic acids and Fe3+ by Geobacter species, and SO42- reduction by sulfate-reducing bacteria linked with anaerobic methanotrophs. As identified by the network analysis, these active AOM pathways compensated a fraction of CH4 produced during ongoing methanogenesis. From a broader ecological perspective, nitrogendriven AOM will become a more important methane sink in the future with the increases of nitrogen fertilization and deposition.
关键词	Anaerobic oxidation of methane Lipid biomarkers CH4 turnover Co-occurrence network Paddy soil Greenhouse gas emission ELECTRON-ACCEPTORS HUMIC SUBSTANCES FATTY-ACIDS REDUCTION PATTERNS MICROORGANISMS PHOSPHOLIPIDS COOCCURRENCE CONSUMPTION WATERS
DOI	10.1016/j.soilbio.2021.108215
WOS记录号	WOS:000640189100001
引用统计	被引频次：49[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/73702
专题	中国科学院昆明植物研究所
作者单位	1.Univ Gottingen, Dept Soil Sci Temperate Ecosyst, Busgenweg 2, D-37077 Gottingen, Germany 2.Univ Gottingen, Inst Microbiol & Genet, D-37077 Gottingen, Germany 3.Univ Gottingen, Dept Biogeochem Agroecosyst, D-37077 Gottingen, Germany 4.Stockholm Univ, Dept Environm Sci & Analyt Chem, S-10691 Stockholm, Sweden 5.Chinese Acad Sci, Kunming Inst Bot, Key Lab Plant Divers & Biogeog East Asia, Kunming 650201, Yunnan, Peoples R China 6.Chinese Acad Sci, Inst Subtrop Agr, Key Lab Agroecol Proc Subtrop Reg & Changsha Res, Changsha 410125, Hunan, Peoples R China 7.Univ Gottingen, Geosci Ctr, Geobiol, D-37077 Gottingen, Germany 8.Univ Gottingen, Dept Agr Soil Sci, D-37077 Gottingen, Germany 9.RUDN Univ, Agrotechnol Inst, Moscow 117198, Russia
推荐引用方式 GB/T 7714	Fan,Lichao,Schneider,Dominik,Dippold,Michaela A.,et al. Active metabolic pathways of anaerobic methane oxidation in paddy soils[J]. SOIL BIOLOGY & BIOCHEMISTRY,2021,156:108215.
APA	Fan,Lichao.,Schneider,Dominik.,Dippold,Michaela A..,Poehlein,Anja.,Wu,Weichao.,...&Dorodnikov,Maxim.(2021).Active metabolic pathways of anaerobic methane oxidation in paddy soils.SOIL BIOLOGY & BIOCHEMISTRY,156,108215.
MLA	Fan,Lichao,et al."Active metabolic pathways of anaerobic methane oxidation in paddy soils".SOIL BIOLOGY & BIOCHEMISTRY 156(2021):108215.

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