Rhizoremediation of a dioxin-like PCB polluted soil by alfalfa: Dynamic characterization at temporal and spatial scale
文献类型：期刊论文
| 作者 | Tu C ; Ma LY; Guo PP; Song F; Teng Y; Zhang HB; Luo YM
|
| 刊名 | Chemosphere
 |
| 出版日期 | 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 |
| ISSN号 | 0045-6535 |
| DOI | 10.1016/j.chemosphere.2017.09.091 |
| 产权排序 | 1 |
| 文献子类 | Article |
| 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. |
| WOS关键词 | Alfalfa ; Dioxin-like PCBs ; Microbial community structure ; Microbial metabolic diversity ; Rhizoremediation ; Rhizosphere |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000414817900056 |
| 源URL | [http://ir.yic.ac.cn/handle/133337/24140]  |
| 专题 | 烟台海岸带研究所_近岸生态与环境实验室 烟台海岸带研究所_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 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. |
入库方式： OAI收割
来源：烟台海岸带研究所
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