Molecular polymorphism of chlorpyrifos-degrading strains in soil treated with controlled and non-controlled release formulations of chlorpyrifos
文献类型: 外文期刊
第一作者: Chen, Liezhong
作者: Chen, Liezhong;Li, Yanli;Wang, Ting;Chen, Liezhong;Yu, Yunlong
作者机构:
关键词: Chlorpyrifos;Soil;Degrading microorganism;Molecular polymorphism;Microcapsules;Emulsifiable concentrate
期刊名称:APPLIED SOIL ECOLOGY ( 影响因子:4.046; 五年影响因子:4.884 )
ISSN:
年卷期:
页码:
收录情况: SCI
摘要: The molecular polymorphisms of chlorpyrifos (CPF)-degrading strains in soil treated with microcapsule (MC) and emulsifiable concentrate (EC) formulations of CPF were studied by laboratory experiments. Results showed that CPF residue in MC-treated soil was maintained at a certain level during 60 days, and the residual period reached 120 days. CPF residue decreased via a first-order model with a residual period of 60 days in EC-treated soil. A total of 16 and 9 degrading strains capable of utilizing CPF as a sole source of carbon and energy were isolated from these two treatments, respectively. All degrading strains were grouped into 16 different types based on enterobacterial repetitive intergenic consensus (ERIC)-PCR pattern similarities. Strains isolated from MC- and EC-treated soils belonged to 14 and 8 ERIC-types, respectively. Six groups of strains that were isolated from MC-and EC-treated soils belonged to similar ERIC-types. All ERIC-type strains were similar to nine known species according to BLAST analysis at the NCBI website. The results indicated that the population and degradation abilities of CPF-degrading strains in soil were visibly strengthened by the controlled-release formulation of CPF compared with those by the non-controlled release formulation. (C) 2014 Elsevier B.V. All rights reserved.
分类号: S154.1
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