Pesticide-degrading bacteria

Ecology of Pesticide-Degrading Bacteria Degradation of Organophosphonis and Carbamate Insecticides... 

In conclusion, the flavoprotein systems isolated from the algae and the bacteria, have a good potential to play significant roles in pesticide degradation in aquatic environments. Such flavoprotein systems are active in degradation of xenobiotics both under aerobic and anaerobic conditions by promoting photochemical and reductive reactions. 

Aryl-Hydroxylation, This is occasionally observed as the initial transformation of aromatic pesticides. The vast majority of aromatic pesticide degradation products are susceptible to aryl-hydroxylation, representing either cometaboHsm or the initial step in mineralization (17). Numerous genera of bacteria and fungi possess the monooxygenases and dioxygenases responsible for hydroxylation of aromatic products. Examples of aromatic products susceptible to aryl-hydroxylation include 2,4-dichlorophenol [120-83-2] (from 2,4-D) (eq. 3), 4-nitrophenol (from parathion) (eq. 4), 3,4-dichloroaniHne [95-76-1] (from propanil), and 3,6-dichlorosaHcyHc acid [3401-80-7] (from dicamba). 

Molecular Genetics of Pesticide Degradation by Soil Bacteria... 

J. S. Karns, Molecular Genetics of Pesticide Degradation by Soil Bacteria , in K. D. Racke and J. R. Coats, Eds., Enhanced Biodegradation of Pesticides in the Environment, ACS Symposium Series No. 426, American Chemical Society, Washington, D.C. 1990, pp. 141-152. 

There have been more biodegradation studies of pyrethroid pesticides by bacteria than by fungi consequently, the biodegradation pathway for bacterial degradation is better understood, since some metabolites and even biodegradation pathways have been elucidated. However, the next section reviews the researches results on fungal biodegradation of these pesticides. 

---