Isolation, identification and cyfluthrin-degrading potential of a novel Lysinibacillus sphaericus strain, FLQ-11-1
文献类型： 外文期刊
作者： Hu, Gui Ping 1 ; Zhao, Yan 1 ; Song, Feng Qing 1 ; Liu, Bo 3 ; Vasseur, Liette 1 ; Douglas, Carl 1 ; You, Min Sheng 1 ;
作者机构： 1.Fujian Agr & Forestry Univ, Inst Appl Ecol, Fuzhou 350002, Fujian, Peoples R China
2.Minist Agr, Key Lab Integrated Pest Management Fujian Taiwan, Beijing, Peoples R China
3.Fujian Acad Agr Sci, Agr Bioresources Inst, Fuzhou 350003, Peoples R China
4.Brock Univ, Dept Biol Sci, St Catharines, ON L2S 3A1, Canada
5.Univ British Columbia, Dept Bo
关键词： Lysinibacillus sphaericus;Biodegradation;Metabolite;Pyrethroid
期刊名称：RESEARCH IN MICROBIOLOGY （ 2020影响因子：3.992； 五年影响因子：4.061 ）
收录情况： SCI
摘要： Strain FLQ-11-1, isolated from sewage sludge, was able to degrade cyfluthrin and was identified as Lysinibacillus sphaericus based on its morphology, 16S rRNA sequence and fatty acid methyl ester (FAME) analyses. This strain could use cyfluthrin as its carbon or nitrogen source. Response surface methodology (RSM) analysis showed that the optimum conditions for degradation were at pH 7.0 and 35 degrees C, using an inoculum amount with an OD600nm value of 1.6. Under these conditions, approximately 80.4% of cyfiuthrin (50 mg l(-1)) was degraded within five days (d) of incubation. Four metabolic compounds were detected during cyfluthrin degradation and identified as methy1-3-(2,2-dichlorovinyl)2,2-dimethyl-(1-cyclopropane)-carboxylate, 4-fluoro-3-phenoxy-benzoic acid methyl ester, methyl-3-phenoxybenzoate, 3-phenoxy-benzaldehyde by gas chromatography mass spectrometry (GC MS) and tandem mass spectrum (MS/MS) analysis and no cyfluthrin was detected after seven days of incubation. A possible degradation pathway was proposed, and our data showed that cyfluthrin could be efficiently degraded by FLQ-11-1, indicating that this strain could potentially be used to eliminate the contamination of pyrethroid herbicides. (C) 2013 Institut Pasteur. Published by Elsevier Masson SAS. All rights reserved.
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