Upland Soil Cluster Gamma dominates methanotrophic communities in upland grassland soils

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	Upland Soil Cluster Gamma dominates methanotrophic communities in upland grassland soils
	Deng, Yongcui ; Che, Rongxiao ; Wang, Fang ; Conrad, Ralf ; Dumont, Marc ; Yun, Juanli ; Wu, Yibo ; Hu, Ang ; Fang, Jie ; Xu, Zhihong
刊名	SCIENCE OF THE TOTAL ENVIRONMENT
	2019-06-20
卷号	670 页码:826-836
关键词	Methanotrophs USC gamma Upland grassland soil Qinghai-Tibetan Plateau Biogeography
ISSN号	0048-9697
英文摘要	Aerobic methanotrophs in upland soils consume atmospheric methane, serving as a critical counterbalance to global warming; however, the biogeographic distribution patterns of their abundance and community composition are poorly understood, especial at a large scale. In this study, soils were sampled from 30 grasslands across >2000 km on the Qinghai-Tibetan Plateau to determine the distribution patterns of methanotrophs and their driving factors at a regional scale. Methanotroph abundance and community composition were analyzed using quantitative PCR and Illumina Miseq sequencing of pmoA genes, respectively. The pmoA gene copies ranged from 8.2 x 10(5) to 1.1 x 10(8) per gram dry soil. Among the 30 grassland soil samples, Upland Soil Cluster Gamma (USC gamma) dominated the methanotroph communities in 26 samples. Jasper Ridge Cluster (JR3) was the most dominant methanotrophic cluster in two samples; while Methylocystis, cluster FWs, and Methylobacter were abundant in other two wet soil samples. Interestingly, reanalyzing the pmoA genes sequencing data from existing publications suggested that USC gamma was also the main methanotrophic cluster in grassland soils in other regions, especially when their mean annual precipitation was <500 mm. Canonical Analysis of Principal Coordinates including all soil samples indicated that the methanotrophic community composition was significantly correlated with local environmental factors, among which mean annual precipitation and pH showed the strongest correlations. Variance partitioning analysis showed that environmental factors and spatial distance were significant factors affecting the community structure of methanotrophs, and environmental properties were more important factors. Collectively, these findings indicate that atmospheric methane may be mainly oxidized by USC gamma in upland soils. They also highlight the key role of water availability and pH in determining the abundance and community profiles of grassland soil methanotrophs. (C) 2019 The Authors. Published by Elsevier B.V.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/42824]
专题	生态环境研究中心_城市与区域生态国家重点实验室
作者单位	1.Nanjing Normal Univ, Sch Geog, Nanjing 210023, Jiangsu, Peoples R China 2.Yunnan Univ, Inst Int Rivers & Ecosecur, Kunming 650091, Yunnan, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Griffith Univ, Environm Futures Res Inst, Sch Environm & Sci, Brisbane, Qld 4111, Australia 5.Max Planck Inst Terr Microbiol, Karl von Frisch Str 10, D-35043 Marburg, Germany
推荐引用方式 GB/T 7714	Deng, Yongcui,Che, Rongxiao,Wang, Fang,et al. Upland Soil Cluster Gamma dominates methanotrophic communities in upland grassland soils[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2019,670:826-836.
APA	Deng, Yongcui.,Che, Rongxiao.,Wang, Fang.,Conrad, Ralf.,Dumont, Marc.,...&Wang, Yanfen.(2019).Upland Soil Cluster Gamma dominates methanotrophic communities in upland grassland soils.SCIENCE OF THE TOTAL ENVIRONMENT,670,826-836.
MLA	Deng, Yongcui,et al."Upland Soil Cluster Gamma dominates methanotrophic communities in upland grassland soils".SCIENCE OF THE TOTAL ENVIRONMENT 670(2019):826-836.