title: Bioaugmentation of DDT-contaminated soil by dissemination of the catabolic plasmid pDOD.
abstract: A plasmid transfer-mediated bioaugmentation method for the enhancement of dichlorodiphenyltrichloroethane (DDT) degradation in soil was developed using the catabolic plasmid pDOD from Sphingobacterium sp. D-6. The pDOD plasmid could be transferred to soil bacteria, such as members of Cellulomonas, to form DDT degraders and thus accelerate DDT degradation. The transfer efficiency of pDOD was affected by the donor, temperature, moisture, and soil type. Approximately 50.7% of the DDT in the contaminated field was removed 210 days after the application of Escherichia coli TG I (pDOD-gfp). The results suggested that seeding pDOD into soil is an effective bioaugmentation method for enhancing the degradation of DDT.
authors.affiliation: Institute of Pesticide and Environmental Toxicology, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China.
authors.forename: Chunming
authors.initials: C
authors.lastname: Gao
authors.affiliation: Institute of Pesticide and Environmental Toxicology, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China.
authors.forename: Xiangxiang
authors.initials: X
authors.lastname: Jin
authors.affiliation: Institute of Pesticide and Environmental Toxicology, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China.
authors.forename: Jingbei
authors.initials: J
authors.lastname: Ren
authors.affiliation: Institute of Pesticide and Environmental Toxicology, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China. Electronic address: agri@zju.edu.cn.
authors.forename: Hua
authors.initials: H
authors.lastname: Fang
authors.affiliation: Institute of Pesticide and Environmental Toxicology, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China. Electronic address: ylyu@zju.edu.cn.
authors.forename: Yunlong
authors.initials: Y
authors.lastname: Yu
mesh_terms: D001673:Biodegradation, Environmental; D040143:Cellulomonas / Q000235:genetics / Q000378:metabolism*; D003634:DDT / Q000378:metabolism*; D052918:Environmental Restoration and Remediation / Q000379:methods*; D004926:Escherichia coli / Q000235:genetics / Q000378:metabolism; D010957:Plasmids / Q000235:genetics; D012988:Soil Microbiology; D012989:Soil Pollutants / Q000378:metabolism*; D045249:Sphingobacterium / Q000235:genetics*
chemical_list: D012989:Soil Pollutants; D003634:DDT
keywords: Bioaugmentation; Dichlorodiphenyltrichloroethane; Green fluorescent protein; Plasmid transfer; Soil