Microbial catabolism of chemical herbicides: Microbial resources, metabolic pathways and catabolic genes

• Published in: Pesticide biochemistry and physiology Vol. 143; pp. 272 - 297
• Main Authors: Huang, Xing, He, Jian, Yan, Xin, Hong, Qing, Chen, Kai, He, Qin, Zhang, Long, Liu, Xiaowei, Chuang, Shaochuang, Li, Shunpeng, Jiang, Jiandong
• Format: Journal Article
• Language: English
• Published: United States Elsevier Inc 01.11.2017
• Subjects: Bacteria - genetics; Bacteria - metabolism; benzene; benzoic acid; biochemical pathways; Biodegradation; Catabolic gene; crops; diphenyl ethers; environmental fate; genes; herbicide resistance; Herbicides; Herbicides - metabolism; Metabolic Networks and Pathways - genetics; Metabolic pathway; metabolism; microbial activity; Microbial source; microorganisms; toxicity; weed control; AMPA; CDHB; MNBA; MEHQ; 3-OH-MEHQ; DCGA; AHAS; DK; ALS; HPP; HQ; 4-IA; MDIPU; Metabolic pathway; IPU; 4-IPC; Herbicides; DCSA; ESA; THF; PUHs; IFT; Microbial source; Catabolic gene; OH-Sim; CMEPA; HO-MDIPU; DADK; Biodegradation; DEA; MCPA; 2,4-D; CDEPA; DKN; DBHB; MEA; GST; GP; DES; AMBA; CMBA; EPTC; FA; GAT; AOPPs; DCMP; DA; FE
• ISSN: 0048-3575; 1095-9939; 1095-9939
• DOI: 10.1016/j.pestbp.2016.11.010

Chemical herbicides are widely used to control weeds and are frequently detected as contaminants in the environment. Due to their toxicity, the environmental fate of herbicides is of great concern. Microbial catabolism is considered the major pathway for the dissipation of herbicides in the environment. In recent decades, there have been an increasing number of reports on the catabolism of various herbicides by microorganisms. This review presents an overview of the recent advances in the microbial catabolism of various herbicides, including phenoxyacetic acid, chlorinated benzoic acid, diphenyl ether, tetra-substituted benzene, sulfonamide, imidazolinone, aryloxyphenoxypropionate, phenylurea, dinitroaniline, s-triazine, chloroacetanilide, organophosphorus, thiocarbamate, trazinone, triketone, pyrimidinylthiobenzoate, benzonitrile, isoxazole and bipyridinium herbicides. This review highlights the microbial resources that are capable of catabolizing these herbicides and the mechanisms involved in the catabolism. Furthermore, the application of herbicide-degrading strains to clean up herbicide-contaminated sites and the construction of genetically modified herbicide-resistant crops are discussed.