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	Assessment of microbial activity and bacterial community composition in the rhizosphere of a copper accumulator and a non-accumulator
	Wang, YuanPeng（Zhejiang Univ, Dept Environm Sci & Technol） ; Li, QingBiao ; Li QB(李清彪) ; Shi, JiYan（Zhejiang Univ, Dept Environm Sci & Technol） ; Lin, Qi（Zhejiang Univ, Dept Environm Sci & Technol） ; Chen, XinCai（Zhejiang Univ, Dept Environm Sci & Technol） ; Wu, Weixiang（Zhejiang Univ, Dept Environm Sci & Technol） ; Chen, YingXu（Zhejiang Univ, Dept Environm Sci & Technol）
	2008-01
关键词	copper-contaminated soil PCR-DGGE Elsholtzia splendens Trifolium repens rhizosphere copper accumulator
英文摘要	Soil microorganisms may play an important role in the uptake of heavy metals from soils. However, assessments of bacterial activity and community composition in the rhizosphere of accumulators have been largely ignored. We studied potential effects of a copper (Cu)-accumulator, Elsholtzia splendens, and a non-Cu-accumulator plant, Trifolium repens, on soil microbial activity and community composition with increasing Cu addition. The results showed that concentrations of Cu in the shoots of E splendens were 2.1, 2.2 and 2.4 times those or T. repens under the treatment of different Cu concentrations. Soil microbial biomass and phosphatase activity in the rhizosphere of E. splendens were higher than those of T. repens. PCR-denaturing gradient gel electrophoresis (PCR-DGGE) fingerprint analysis revealed that addition of Cu decreased the number of bands in bare soil and soil with T repens. However, there was a significant increase in the number of bands in soil with E. splendens incorporated with either 200 or 500 mg kg(-1) CU. The abundances of five phylogenetic groups related most closely to alpha-, beta-, gamma-proteobacteria, Gram-positive bacteria and CFB group, respectively, were determined in the rhizosphere of plants. Some specific clone such as E13 (metal-contaminated soil clone K20-64) was found in the rhizosphere of E. splendens. Results indicated that E. splendens, as a Cu-accumulator, played an important role in governing soil microbial activity and bacterial community composition in the rhizosphere in response to Cu stress. (C) 2008 Elsevier Ltd. All rights reserved.
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
内容类型	期刊论文
源URL	[http://dx.doi.org/doi:10.1016/j.soilbio.2007.12.010]
专题	化学化工－已发表论文
推荐引用方式 GB/T 7714	Wang, YuanPeng,Li, QingBiao,Li QB,et al. Assessment of microbial activity and bacterial community composition in the rhizosphere of a copper accumulator and a non-accumulator[J],2008.
APA	Wang, YuanPeng.,Li, QingBiao.,李清彪.,Shi, JiYan.,Lin, Qi.,...&Chen, YingXu.(2008).Assessment of microbial activity and bacterial community composition in the rhizosphere of a copper accumulator and a non-accumulator..
MLA	Wang, YuanPeng,et al."Assessment of microbial activity and bacterial community composition in the rhizosphere of a copper accumulator and a non-accumulator".(2008).

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