Biodegradation of dicofol by Pseudomonas strains isolated from tea rhizosphere microflora.

Abstract

This study was aimed to determine the degradation potential of Pseudomonas sp. isolated from tea rhizosphere towards the pesticide dicofol. A total number of 13 Pseudomonas strains had been isolated and screened for their tolerance level against dicofol concentrations of dicofol (5, 7 and 10 mg/L). Results indicated that out of 13 strains, only two strains could tolerate the highest concentration of dicofol. These two strains were subjected to degradation of dicofol at the level of 10 mg /L. Results indicated that in the presence of glucose, strain no. P9 and P13 could degrade dicofol up to 70.0% and 32.0% respectively whereas up to 38.0% and 14.2% in the absence of glucose., which may be due to the role of glucose as an inducer for the growth of the organism.