Tu C
; Ma LY; Guo PP; Song F; Teng Y; Zhang HB; Luo YM发表期刊Chemosphere
ISSN0045-6535
2017
卷号189期号:189页码:517-524
关键词AlfalfaDioxin-like PCBsMicrobial community structureMicrobial metabolic diversityRhizoremediationRhizosphere
研究领域Environmental Sciences
DOI10.1016/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：17[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.cnhttp://ir.yic.ac.cn/handle/133337/24140
专题中科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
中科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 7714Tu 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.
APATu 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.
MLATu 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.
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