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Soil bacterial community mediates the effect of plant material on methanogenic decomposition of soil organic matter
Quan Yuan;  Marcela Hernández;  Marc G.Dumont;  Junpeng Rui;  Ana Fernández Scavino;  Ralf Conrad
2018
发表期刊Soil Biology & Biochemistry
卷号116页码:99-109
摘要

Input of plant material may strongly change decomposition rates of soil organic matter (SOM), i.e. causing priming effect (PE), but the underlying mechanisms are largely unknown. We found that rice straw addition in anoxic Fuyang (F) rice field soil stimulated CH4 production from SOM at the expense of CO2, whereas in Uruguay (U) soil it suppressed SOM degradation to CO2 plus CH4 (negative PE). Reciprocal inoculation experiments with non-sterile and sterile soils showed that the soils always displayed the effect of rice straw characteristic for the live microbial commtmity rather than for the soil physicochemical properties. Pyrosequencing of 16S rRNA genes showed that bacterial communities in these soil samples were separated into two clusters (F and U). Symbiobacterium was abtmdant or dominant in microbiota from U soil, but negligible in those from F soil. Network analysis indicated that the bacterial populations involved in SOM decomposition were different between soils of F and U clusters; moreover, they were more tightly connected to methanogens in U than in F clusters. Ultimately, our results suggested that the PE of rice straw is mediated by the composition and activity of soil microbial community.

关键词Soil Organic Matter Rice Field Soil Anoxia Priming Effect 16s Rrna Gene Microbial Community
收录类别SCI
语种英语
文献类型期刊论文
条目标识符http://ir.gyig.ac.cn/handle/42920512-1/8645
专题环境地球化学国家重点实验室
作者单位1.State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, China
2.Max Planck Institute for Terrestrial Microbiology, Marburg, Germany
3.Biological Sciences, University of Southampton, UK
4.Key Laboratory of Environmental and Applied Microbiology, Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, China
5.Departamento de Biociencias, Facultad de Quimica, Universidad de la Republica, Montevideo, Uruguay
推荐引用方式
GB/T 7714
Quan Yuan;Marcela Hernández;Marc G.Dumont;Junpeng Rui;Ana Fernández Scavino;Ralf Conrad. Soil bacterial community mediates the effect of plant material on methanogenic decomposition of soil organic matter[J]. Soil Biology & Biochemistry,2018,116:99-109.
APA Quan Yuan;Marcela Hernández;Marc G.Dumont;Junpeng Rui;Ana Fernández Scavino;Ralf Conrad.(2018).Soil bacterial community mediates the effect of plant material on methanogenic decomposition of soil organic matter.Soil Biology & Biochemistry,116,99-109.
MLA Quan Yuan;Marcela Hernández;Marc G.Dumont;Junpeng Rui;Ana Fernández Scavino;Ralf Conrad."Soil bacterial community mediates the effect of plant material on methanogenic decomposition of soil organic matter".Soil Biology & Biochemistry 116(2018):99-109.
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