Biodegradation of buprofezin by Rhodococcus sp. strain YL-1 isolated from rice field soil

Journal of Agricultural and Food Chemistry
Chao LiShun-peng Li

Abstract

A buprofezin-degrading bacterium, YL-1, was isolated from rice field soil. YL-1 was identified as Rhodococcus sp. on the basis of the comparative analysis of 16S rDNA sequences. The strain could use buprofezin as the sole source of carbon and nitrogen for growth and was able to degrade 92.4% of 50 mg L(-1) buprofezin within 48 h in liquid culture. During the degradation of buprofezin, four possible metabolites, 2-tert-butylimino-3-isopropyl-1,3,5-thiadiazinan-4-one, N-tert-butyl-thioformimidic acid formylaminomethyl ester, 2-isothiocyanato-2-methyl-propane, and 2-isothiocyanato-propane, were identified using gas chromatography-mass spectrometry (GC-MS) analysis. The catechol 2,3-dioxygenase activity was strongly induced during the degradation of buprofezin. A novel microbial biodegradation pathway for buprofezin was proposed on the basis of these metabolites. The inoculation of soils treated with buprofezin with strain YL-1 resulted in a higher degradation rate than that observed in noninoculated soils, indicating that strain YL-1 has the potential to be used in the bioremediation of buprofezin-contaminated environments.

References

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Citations

Sep 27, 2014·Bulletin of Environmental Contamination and Toxicology·Smriti SharmaV K Gupta
May 23, 2016·Journal of Environmental Management·Guangli WangYuan Liu
Jul 24, 2014·Environmental Monitoring and Assessment·Smriti SharmaV K Gupta
Jul 16, 2017·Applied and Environmental Microbiology·Xueting ChenXin Yan
Mar 20, 2015·Environmental Science & Technology·Tingting KuNan Sang

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