MECHANISM OF BIODEGRADATION OF ORGANOPHOSPHATE PESTICIDES IN AQUATIC ECOSYSTEM 4. THE INDUCIBLE SYNTHESIS CHARACTER OF PARATHION HYDROLASE IN PSEUDOMONAS SP. CTP-01

Parathion hydrolase may rapidly hydrolyze P-O bond of parathion molecule. Experiments show that the parathion-indueed formation of the enzyme in Pseudomonas sp. CTP-01 is responsible for parathion degradation. Methyl parathion and p-nitrophenol also served as inducers of the enzyme. Response of stationary phase cells to substrate induction is much faster than response of cells at the exponential phase of growth.