联苯菊酯降解菌的筛选及降解特性研究  

Screening and Degradation Characters of Bifenthrin Degrading Bacterium

作　　者：赵宇蕾[1] 呼世斌[2] 秦宝福[1] 许炳云[1] 余磊[3] 

机构地区：[1]西北农林科技大学生命科学学院,陕西杨凌712100 [2]西北农林科技大学理学院,陕西杨凌712100 [3]西北农林科技大学资源与环境学院,陕西杨凌712100

出　　处：《西北农业学报》2009年第3期273-276,共4页Acta Agriculturae Boreali-occidentalis Sinica

基　　金：中央环境保护专项基金(财建[2006]859)

摘　　要：从杨凌某农药生产厂的下水道污泥中分离出一株联苯菊酯降解菌。根据形态、生理生化分析,初步鉴定为假单胞菌属,并命名为LBX3。该菌可以联苯菊酯为唯一碳源生长。试验结果表明,LBX3降解联苯菊酯的最适pH为7.0,最适温度为30℃。在pH为7的基础盐培养基中,150 r/min摇床培养第5天,LBX3对200 mg/L的联苯菊酯的降解率达到72.5%。A bacterial strain named LBX3, which could use bifenthrin as sole carbon source, was isolated from activated sludge collected from pesticide manufacturer. It has been identified as Pseudomonas sp. based on morphology and physiology analysis. The optimal pH and temperature for the degradation were 7.0 and 30°C, respectively. When bacterial strain LBX3 was incubated in mineral salt medium contained 200 mg/L bifenthrin at pH 7.0, after 5 days shaking at 150 r/min, the degradation rate of bifenthrin reached 72.5 %.

关 键 词：联苯菊酯 降解菌 筛选 降解特性 

分 类 号：X172[环境科学与工程—环境科学]