一株降解咪唑乙烟酸荧光假单胞杆菌的特性研究  

A strain of Pseudomonas fluorescens degrading imazethapyr and its feature

作　　者：宗娟[1] 孙庆元[1] 杨红[1] 李阳[1] 韩婷婷[1] 

机构地区：[1]大连工业大学生物与食品工程学院,辽宁大连116034

出　　处：《大连工业大学学报》2009年第6期408-411,共4页Journal of Dalian Polytechnic University

摘　　要：通过诱变荧光假单胞杆菌单菌株得到一株咪唑乙烟酸降解菌株qsun-1。菌株qsun-1能以咪唑乙烟酸为氮源生长。咪唑乙烟酸降解菌株qsun-1可以利用多种含碳物质为碳源,但当以甘露醇为碳源时,菌体生长情况最好。结果表明,当pH为6、温度为28℃、接种量为5%时,100 mg/L咪唑乙烟酸经过72 h,降解率最高,利用高效液相色谱测定降解率达到88%。A mutant qsun-1 induced by a chemical method from Pseudomonas fluorescens was isolated. qsun-1 could grow with imazethapyr as a nitrogen source while it utilized many carbon containing materials though mannitol was the best. When pH, temperature and imazethapyr concentration were 6, 28 ℃ and 100 mg/L respectively, 88% of imazethapyr could be degraded by a 5% inoculation rate of qsun-1 within 72 h determined with reversed-phase high performance liquid chromatography.

关 键 词：咪唑乙烟酸 荧光假单胞杆菌 微生物降解 

分 类 号：Q939.96[生物学—微生物学] S151.22[农业科学—土壤学]