Pathway and kinetics of cyhalothrin biodegradation by Bacillus thuringiensis strain ZS-19

摘要: Cyhalothrin is a common environmental pollutant which poses increased risks to non-target organisms including human beings. This study reported for the first time newly isolated strain, Bacillus thuringiensis ZS-19 completely degraded cyhalothrin in minimal medium within 72 h. The bacterium transformed by cleavage of both ester linkage and diaryl bond yield six intermediate products. Moreover, novel degradation pathway strain was proposed on basis identified metabolites. In addition cyhalothrin, this found be capable degrading 3-phenoxybenzoic acid, metabolite pyrethroids. Furthermore, participated efficient wide range pyrethroids fenpropathrinn, deltamethrin, beta-cypermethrin, cyfluthrin bifenthrin. Taken together, our results provide insights into mechanism also highlight promising potentials B.thuringiensis bioremediation pyrethroid-contaminated environment. report (i) other B.thuringiensis, (ii) identification 3-phenoxyphenyl acetonitrile N-(2-isoproxy-phenyl)-4-phenoxy-benzamide as metabolites pyrethroids, (iii) microorganism.