P. Xiao
2013
Citations
0
Influential Citations
3
Citations
Journal
Chinese Journal of Appplied Environmental Biology
Abstract
Endrin is an organochlorine pesticide that was extensively used for the control of agricultural pests in the past several decades around the world.In this study,degradation characteristics and mechanism of endrin was investigated using a white rot fungus,Phlebia acanthocystis TMIC34875,which is capable of degrading dieldrin.The degradation rate was about 57% when the strain with an inoculum amount of 15% was incubated for 10 d.This strain showed the comparatively greatest degradation rate(0.053 μmol L-1h-1) with initial endrin concentration of 20 μmol L-1.The optimal pH and temperature for endrin degradation were 4.5-5.5 and 25-35 ℃,respectively.The strain showed the higher degradation activity of endrin in the PDB medium than in Kirk medium.At least five metabolites of endrin including three hydroxylated products and a carboxylic acid product were detected from fungal culture using GC/MS analysis,indicating that the metabolic mechanism of endrin degradation by P.acanthocystis TMIC34875 is different from the known pathway.