Biodegradation of dicofol by Microbacterium sp. D-2 isolated from pesticide-contaminated agricultural soil

被引:1
作者
Peng Lu
Hong-ming Liu
Ai-min Liu
机构
[1] Anhui Normal University,College of Life Sciences
来源
Applied Biological Chemistry | 2019年 / 62卷
关键词
Dicofol; Biodegradation; sp. D-2; Bioremediation;
D O I
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学科分类号
摘要
Dicofol is an organochlorine insecticide widely used to prevent pests worldwide. Consequently, serious environmental problems have arisen from the application of dicofol. Bioremediation is an effective solution for dicofol persistence in the environment. In this study, a bacterial strain D-2, identified to genus Microbacterium, capable of degrading dicofol was isolated from dicofol-contaminated agricultural soil. This represents the first dicofol degrading bacterium isolated from this genus. Microbacterium sp. D-2 degraded 50 mg/L dicofol within 24 h at a rate of 85.1%. Dicofol was dechlorinated by D-2 and the further degradation metabolite was indentified as p,p′-dichlorobenzophenone(DCBP). Soils inoculated with Microbacterium sp. D-2 degraded 81.9% of the dicofol, while soils without D-2 only degraded 20.5% of the dicofol present. This finding suggests that strain D-2 has great potential in bioremediation of dicofol-contaminated soils.
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