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

Scientific Reports
Shaohua ChenLian-Hui Zhang

Abstract

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

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Citations

Oct 4, 2016·Frontiers in Microbiology·Mariusz Cycoń, Zofia Piotrowska-Seget
Feb 11, 2018·Environmental Science and Pollution Research International·Jiewei TianYongqiang Tian
Feb 20, 2018·Frontiers in Microbiology·Hui ZhanShaohua Chen
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Aug 21, 2019·Frontiers in Microbiology·Pankaj BhattShaohua Chen
Dec 19, 2019·Scientific Reports·Mostafa Galal AboelkheirFernando Gomes de Souza
Apr 1, 2020·Frontiers in Microbiology·Yanmei FengShaohua Chen
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Aug 21, 2019·Frontiers in Microbiology·Yaohua HuangShaohua Chen
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Jan 3, 2021·Environmental Research·Yaohua HuangShaohua Chen
Mar 2, 2021·Frontiers in Bioengineering and Biotechnology·Sandhya MishraShaohua Chen
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Datasets Mentioned

BETA
KJ206072
KF290567

Methods Mentioned

BETA
scanning electron microscopy
PCR

Software Mentioned

Matrix Laboratory ( MATLAB )
BLAST
Clustal X
MEGA

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