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	PCB removal, soil enzyme activities, and microbial community structures during the phytoremediation by alfalfa in field soils
	Tu, Chen1,2; Teng, Ying1,2; Luo, Yongming1,2; Sun, Xianghui2; Deng, Shaopo2; Li, Zhengao2; Liu, Wuxing1,2; Xu, Zhihong3,4
刊名	JOURNAL OF SOILS AND SEDIMENTS
	2011-06-01
卷号	11期号:4页码:649-656
关键词	Alfalfa Enzyme activity Microbial community structure PCBs Phytoremediation
ISSN号	1439-0108
DOI	10.1007/s11368-011-0344-5
通讯作者	Luo, Yongming(ymluo@issas.ac.cn)
英文摘要	Purpose An in situ phytoremediation trial was developed in order to investigate the function of alfalfa during a 2-year bioremediation of an agricultural soil contaminated with polychlorinated biphenyls (PCBs). The study was conducted with the aim to better understand the application potential of PCB phytoremediation at field scale. Materials and methods Two treatments were set up in this field study: (1) soil without planting as a control (CK), and (2) soil planted with alfalfa (P). Kinetics of soil PCB removal during the bioremediation treatment was determined using gas chromatography. Soil enzyme activities including dehydrogenase and fluorescein diacetate (FDA) esterase were detected by spectrophotometry. In addition, soil microbial community structures were investigated by using denaturing gradient gel electrophoresis (DGGE). Results and discussion After the first and second years of remediation, planting alfalfa significantly decreased the initial soil PCB concentrations by 31.4% and 78.4%, respectively. Moreover, the presence of alfalfa significantly increased soil dehydrogenase and FDA esterase activities during the remediation. Changes in soil bacterial community structure and diversity were observed by PCR-DGGE fingerprinting. Planting alfalfa significantly increased soil bacterial diversity. Some well-known PCB-degrading bacteria such as Chloroflexi sp. may have contributed to the rhizoremediation of PCBs. Conclusions Results of this field study suggest that alfalfa is a promising candidate for phytoremediation of PCB-contaminated agricultural soil.
收录类别	SCI
WOS关键词	POLYCHLORINATED-BIPHENYLS ; CONTAMINATED SOILS ; BIODEGRADATION ; REMEDIATION ; RHIZOBIUM ; BACTERIA ; PLANTS
WOS研究方向	Geology ; Agriculture
WOS类目	Geosciences, Multidisciplinary ; Soil Science
语种	英语
出版者	SPRINGER HEIDELBERG
WOS记录号	WOS:000292311900011
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2558988
专题	南京土壤研究所
通讯作者	Luo, Yongming
作者单位	1.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Soil Sci, Key Lab Soil Environm & Pollut Remediat, Nanjing 210008, Peoples R China 3.Griffith Univ, Environm Futures Ctr, Brisbane, Qld 4111, Australia 4.Griffith Univ, Sch Biomol & Phys Sci, Brisbane, Qld 4111, Australia
推荐引用方式 GB/T 7714	Tu, Chen,Teng, Ying,Luo, Yongming,et al. PCB removal, soil enzyme activities, and microbial community structures during the phytoremediation by alfalfa in field soils[J]. JOURNAL OF SOILS AND SEDIMENTS,2011,11(4):649-656.
APA	Tu, Chen.,Teng, Ying.,Luo, Yongming.,Sun, Xianghui.,Deng, Shaopo.,...&Xu, Zhihong.(2011).PCB removal, soil enzyme activities, and microbial community structures during the phytoremediation by alfalfa in field soils.JOURNAL OF SOILS AND SEDIMENTS,11(4),649-656.
MLA	Tu, Chen,et al."PCB removal, soil enzyme activities, and microbial community structures during the phytoremediation by alfalfa in field soils".JOURNAL OF SOILS AND SEDIMENTS 11.4(2011):649-656.

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