中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Reductive dechlorination of polychlorinated biphenyls is coupled to nitrogen fixation by a legume-rhizobium symbiosis

文献类型:期刊论文

作者Tu, Chen1; Luo, Yongming1,2; Teng, Ying2; Christie, Peter2
刊名SCIENCE CHINA-EARTH SCIENCES
出版日期2018-03-01
卷号61期号:3页码:285-291
关键词Biogeochemical Cycling Legume-rhizobia Symbiosis Microbe-assisted Phytoremediation Nitrogen Fixation Polychlorinated Biphenyls Soil Pollution And Remediation Reductive Dechlorination
ISSN号1674-7313
DOI10.1007/s11430-017-9131-9
文献子类Article
英文摘要

Chlorinated persistent organic pollutants, including polychlorinated biphenyls (PCBs), represent a particularly serious environmental problem and human health risk worldwide. Leguminous plants and their symbiotic bacteria (rhizobia) are important components of the biogeochemical cycling of nitrogen in both agricultural and natural ecosystems. However, there have been relatively few detailed studies of the remediation of PCB-contaminated soils by legume-rhizobia symbionts. Here we report for the first time evidence of the reductive dechlorination of 2,4,4'-trichlorobiphenyl (PCB 28) by an alfalfa-rhizobium nitrogen fixing symbiont. Alfalfa (Medicago sativa L.) inoculated with wild-type Sinorhizobium meliloti had significantly larger biomass and PCB 28 accumulation than alfalfa inoculated with the nitrogenase negative mutant rhizobium SmY. Dechlorination products of PCB 28, 2,4'-dichlorobiphenyl (PCB 8), and the emission of chloride ion (Cl-) were also found to decrease significantly in the ineffective nodules infected by the mutant strain SmY. We therefore hypothesize that N2-fixation by the legume-rhizobium symbiont is coupled with the reductive dechlorination of PCBs within the nodules. The combination of these two processes is of great importance to the biogeochemical cycling and bioremediation of organochlorine pollutants in terrestrial ecosystems.

学科主题环境科学
URL标识查看原文
WOS关键词Sinorhizobium-meliloti ; Organic Pollutants ; Contaminated Soil ; Phytoremediation ; Pcbs ; Bioremediation ; Degradation ; Biodegradation ; Remediation ; Alfalfa
资助项目National Natural Science Foundation of China
WOS研究方向Geology
语种英语
WOS记录号WOS:000426574800004
源URL[http://ir.yic.ac.cn/handle/133337/23579]  
专题烟台海岸带研究所_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, Yongming
作者单位1.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Ecol Remediat
2.Chinese Acad Sci, Inst Soil Sci, Key Lab Soil Environm & Pollut Remediat
推荐引用方式
GB/T 7714
Tu, Chen,Luo, Yongming,Teng, Ying,et al. Reductive dechlorination of polychlorinated biphenyls is coupled to nitrogen fixation by a legume-rhizobium symbiosis[J]. SCIENCE CHINA-EARTH SCIENCES,2018,61(3):285-291.
APA Tu, Chen,Luo, Yongming,Teng, Ying,&Christie, Peter.(2018).Reductive dechlorination of polychlorinated biphenyls is coupled to nitrogen fixation by a legume-rhizobium symbiosis.SCIENCE CHINA-EARTH SCIENCES,61(3),285-291.
MLA Tu, Chen,et al."Reductive dechlorination of polychlorinated biphenyls is coupled to nitrogen fixation by a legume-rhizobium symbiosis".SCIENCE CHINA-EARTH SCIENCES 61.3(2018):285-291.

入库方式: OAI收割

来源:烟台海岸带研究所

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