文献类型： 外文期刊

作者： Lin, Xiao-Yan ¹ ; Yang, Yu-Yi ² ; Zhao, Yu-Hua ³ ; Fu, Qing-Lin ⁴ ;

作者机构： 1.China Natl Rice Res Inst, Rice Prod Qual Inspect & Supervis Testing Ctr, Hangzhou 310006, Zhejiang, Peoples R China

2.Zhongnan Univ Econ & Law, Sch Informat & Safety Engn, Wuhan 430073, Peoples R China

3.Zhejiang Univ, Inst Microbiol, Coll Life Sci, Hangzhou 310058, Zhejiang, Peoples R China

4.Zhejiang Acad Agr Sci, Hangzhou 310021, Zhejiang, Peoples R China

关键词： Bensulfuron-methyl;Biodegradation;Denaturing gradient gel electrophoresis (DGGE);Bacterial community structure

期刊名称：ECOTOXICOLOGY （ 影响因子：2.823； 五年影响因子：2.958 ）

ISSN： 0963-9292

年卷期： 2012 年 21 卷 5 期

页码：

收录情况： SCI

摘要： Bensulfuron-methyl (BSM) is a new kind of sulfonylurea herbicide widely used to control broad-leaf weeds in rice paddies. The aim of this work was to study BSM biodegradation in paddy soils with BSM-degrading bacteria Bacillus megaterium L1 and Brevibacterium sp. BH and its effect on the structures of soil bacterial community. More than 90 % of BSM could be degraded in paddy soils with 0.0355 mg kg(-1) BSM concentration. Addition of BSM-degrading bacterial strains Bacillus megaterium L1 into BSM contaminated paddy soil could have the half-life time of BSM compared to treatment without Bacillus megaterium L1 inoculation. Denaturing gradient gel electrophoresis and principle component analysis indicated that the diversity of the soil microbial community structure changed along with the addition of BSM, which recovered at the end of the experiment (5 weeks). Addition of BSM-degrading bacteria Bacillus megaterium L1 enriched the diversity of soil microbial community structure in paddy soils. This study provides information on the biodegradation of BSM and BSM's influences on the soil bacteria microbial community structures.