Seven organophosphate pesticide-degrading bacteria, namely mp-1 to mp-7, were isolated from a long-term organophosphate pesticide-contaminated soil using selective culture medium with organophosphate pesticide as the sole carbon and energy source. Comparative studies were performed on their morphological, physiological and biochemical characteristics. The genomic DNA of the seven bacteria was extracted by the method of high-salt-concentration precipitation and their 16S rDNA was amplified with the bacterial...