Biodegradation of organophosphorus insecticide methyl parathion by soil microorganisms

Organophosphorus compounds (OPs) have been widely used as effective insecticides. As a result, using too many OPs causes the residues of pesticides to be washed away into water or soil, not only polluting and also directly indirectly affecting environment human health. Besides countries terrorists use them chemical warfare weapons. They are very dangerous neurotoxins humans, animals environment. In there microorganisms that can degrade OPs, helping release accumulation these toxic substances. this study, two OP-degrading bacterial strains P9 H14 has isolated from agricultural land in Ha Nam province, Vietnam. We had DNA barcodes (16S rRNA) molecular identification Klebsiella variicola (P9) Priestia aryabhattai (H14) deposited GenBank MW644772, MW644771, respectively. Moreover, at an initial concentration methyl parathion 50 mg/L, investigative culture mediums conditions, strain degraded 100% after 7 days Luria-Bertani (LB) liquid culture. Maximum growth was observered 6 incubation (OD600=3.34). This study is effort open direction applying treatment contaminated soils water.