Rhizoremediation of a dioxin-like PCB polluted soil by alfalfa: Dynamic characterization at temporal and spatial scale

doi:10.1016/j.chemosphere.2017.09.091

YIC-IR > 中国科学院海岸带环境过程与生态修复重点实验室 > 海岸带环境过程实验室

	Rhizoremediation of a dioxin-like PCB polluted soil by alfalfa: Dynamic characterization at temporal and spatial scale
	Tu C; Ma LY; Guo PP; Song F; Teng Y; Zhang HB; Luo YM
发表期刊	Chemosphere
ISSN	0045-6535
	2017
卷号	189 期号:189 页码:517-524
关键词	Alfalfa Dioxin-like PCBs Microbial community structure Microbial metabolic diversity Rhizoremediation Rhizosphere
研究领域	Environmental Sciences
DOI	10.1016/j.chemosphere.2017.09.091
产权排序	1
作者部门	海岸带环境过程实验室
英文摘要	This study investigates the temporal and spacial dissipation dynamics of a dioxin-like polychlorinated biphenyl (PCB 77) in the rhizosphere of alfalfa. A three-chamber rhizobox was designed to compare the PCB 77 dissipation efficiency in the rhizosphere, near-rhizosphere, and far-rhizosphere zones. Culture independent techniques, including quantitative PCR (qPCR), Biolog-ECO plate, and denatured gradient gel electrophoresis (DGGE) were employed to investigate the variation of bacterial quantity, metabolic diversity and community structure in the alfalfa-rhizobium symbiosis rhizosphere at different rhizoremediation stages. PCB dissipation rates in different rhizosphere zones were in the order: rhizosphere (90.9%) > near-rhizosphere (80.5%) > far-rhizosphere (31.7%). The number of the bacterial 16S rRNA gene copies in the rhizosphere zone in the polluted treatment reached the highest value of all the treatments. Microbial metabolic diversity, as indicated by average well color development (AWCD) in both rhizosphere and near-rhizosphere zones, had recovered from the PCB 77 pollution. The soil bacterial community diversity improved greatly in the rhizosphere of alfalfa, with some new species appeared in the rhizosphere and near-rhizosphere zones. In conclusion, the dissipation of PCB 77, the quantity of total soil bacteria, soil microbial metabolic diversity, and soil microbial community structure were significantly improved in rhizosphere and near-rhizosphere zones of alfalfa. (C) 2017 Elsevier Ltd. All rights reserved.
文章类型	Article
收录类别	SCI
语种	英语
关键词[WOS]	Alfalfa ; Dioxin-like PCBs ; Microbial community structure ; Microbial metabolic diversity ; Rhizoremediation ; Rhizosphere
研究领域[WOS]	Environmental Sciences & Ecology
WOS记录号	WOS:000414817900056
引用统计	被引频次：23[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.yic.ac.cn/handle/133337/24140
专题	中国科学院海岸带环境过程与生态修复重点实验室_海岸带环境过程实验室中国科学院海岸带环境过程与生态修复重点实验室
通讯作者	Luo YM
推荐引用方式 GB/T 7714	Tu C,Ma LY,Guo PP,et al. Rhizoremediation of a dioxin-like PCB polluted soil by alfalfa: Dynamic characterization at temporal and spatial scale[J]. Chemosphere,2017,189(189):517-524.
APA	Tu C.,Ma LY.,Guo PP.,Song F.,Teng Y.,...&Luo YM.(2017).Rhizoremediation of a dioxin-like PCB polluted soil by alfalfa: Dynamic characterization at temporal and spatial scale.Chemosphere,189(189),517-524.
MLA	Tu C,et al."Rhizoremediation of a dioxin-like PCB polluted soil by alfalfa: Dynamic characterization at temporal and spatial scale".Chemosphere 189.189(2017):517-524.