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题名: Isolation and characterization of comprehensive polychlorinated biphenyl-degrading bacterium, Enterobacter sp LY402
作者: Jia Ling-Yun1;  Zheng, Ai-Ping1;  Xu, Li1;  Huang, Xiao-Dong2, 3;  Zhang, Qing4;  Yang, Feng-Lin1
关键词: biodegradation ;  polychlorinated biphenyl (PCB) ;  aerobic
刊名: JOURNAL OF MICROBIOLOGY AND BIOTECHNOLOGY
发表日期: 2008-05-01
卷: 18, 期:5, 页:952-957
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Life Sciences & Biomedicine
类目[WOS]: Biotechnology & Applied Microbiology ;  Microbiology
研究领域[WOS]: Biotechnology & Applied Microbiology ;  Microbiology
英文摘要: A Gram-negative bacterium, named LY402, was isolated from contaminated soil. 16S rDNA sequencing and measurement of the physiological and biochemical characteristics identified it as belonging to the genus Enterobacter. Degradation experiments showed that LY402 had the ability to aerobically transform 79 of the 91 major congeners of Aroclor 1242, 1254, and 1260. However, more interestingly, the strain readily degraded certain highly chlorinated and recalcitrant polychlorinated biphenyls (PCBs). Almost all the tri- and tetra-chlorobiphenyls (CBs), except for 3,4,3',4'-CB, were degraded in 3 days, whereas 73% of 3,4,3',4'-, 92% of the penta-, 76% of the hexa-, and 37% of the hepta-CBs were transformed after 6 days. In addition, among 12 octa-CBs, 2,2',3,3',5,5',6,6-CB was obviously degraded, and 2,2',3,3',4,5,6,6'- and 2,2',3,3',4,5,5',6'-CB were slightly transformed. In a metabolite analysis, mono- and dichlorobenzoic acids (CBAs) were identified, and parts of them were also transformed by strain LY402. Analysis of PCB degradation indicated that strain LY402 could effectively degrade PCB congeners with chlorine substitutions in both orlho- and para-positions. Consequently, this is the first report of an Enterobacteria that can efficiently degrade both low and highly chlorinated PCBs under aerobic conditions.
关键词[WOS]: ALCALIGENES-EUTROPHUS H850 ;  PSEUDOMONAS-PSEUDOALCALIGENES ;  STRAIN LB400 ;  DEGRADATION ;  BIODEGRADATION ;  PCBS ;  GENE
语种: 英语
WOS记录号: WOS:000256238100023
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/141095
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Dalian Univ Technol, Dept Biosci & Biotechnol, Dalian 116024, Peoples R China
2.Univ Waterloo, Dept Biol, Waterloo, ON N2L 3G1, Canada
3.Dalian Maritime Univ, Coll Environm Sci, Dalian 116026, Peoples R China
4.Chinese Acad Sci, Dalian Inst Chem Phys, Adv Anal Ctr, Dalian 116023, Peoples R China

Recommended Citation:
Jia Ling-Yun,Zheng, Ai-Ping,Xu, Li,et al. Isolation and characterization of comprehensive polychlorinated biphenyl-degrading bacterium, Enterobacter sp LY402[J]. JOURNAL OF MICROBIOLOGY AND BIOTECHNOLOGY,2008,18(5):952-957.
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