Biodegradation of chlorpyrifos and 3,5,6-trichloro-2-pyridinol by a newly isolated Paracoccus sp strain TRP
文献类型: 外文期刊
第一作者: Wang, Shenghui
作者: Wang, Shenghui;Yan, Yanchun;Xu, Gangming;Xu, Gangming;Zheng, Wei;Li, Yingying;Zhang, Jingshun
作者机构:
关键词: chlorpyrifos;3,5,6-trichloro-2-pyridinol;degrading bacterium;Paracoccus sp.;complete mineralization
期刊名称:INTERNATIONAL BIODETERIORATION & BIODEGRADATION ( 影响因子:4.32; 五年影响因子:4.719 )
ISSN: 0964-8305
年卷期: 2008 年 62 卷 1 期
页码:
收录情况: SCI
摘要: A bacterium, isolated from activated sludge and named strain TRP, could biodegrade chlorpyrifos and 3,5,6-trichloro-2-pyridinol. Phenotypic features, physiological and chemotaxonomic characteristics, and phylogenetic analysis of 16S rRNA sequence revealed that the isolate belongs to the genus of Paracoccus. Strain TRP could also degrade pyridine, methyl parathion and carbonfuran when provided as sole carbon and energy sources. Native-PAGE and enzymatic degradation assay of the cell-free extracts indicated that an alternative degradation mechanism might involve an inducible enzyme. Degradation study of chlorpyrifos by strain TRP was examined by GC-MS and HPLC no persistent accumulated metabolite was observed. To the best of our knowledge, this is the first report of a bacterium that could completely mineralize chlorpyrifos. This isolate will be potentially useful in biotreatment of wastewaters and bioremediation of contaminated soils. (C) 2007 Elsevier Ltd. All rights reserved.
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