一株氯氰菊酯降解菌的分离和鉴定

Isolation and identification of a cypermethrin degrading bacterium

从氯氰菊酯污染土壤中,分离到一株氯氰菊酯的降解菌,命名为HF12-8。根据形态、生理生化和16S rDNA聚类分析、Biolog GN测试等,将该菌株初步鉴定为铜绿假单胞菌。HF12-8能够以氯氰菊酯或联苯菊酯为唯一碳源生长,5 d内对20 mg.L-1的氯氰菊酯和联苯菊酯降解率分别为93.03%和58%。

A cypennethrin degrading bacterium, HF12-8, was isolated from cypennethrin contaminated soil. It was identified as Pseudomonas aeruginosa based on morphology, physiology, phylogenetic analysis of 16S rDNA gene sequence and Biolog GN. This strain was capble of using cypermethrin as sole carbon source. 93.03% of 20 mg·L^-1 cypennethrin and also 58% of 20 mg·L^-1 bifenthrin could be degraded in 5 days.