环境工程学报2013，Vol.7Issue(2)：783-790,8.
一株高效MC-RR降解菌的分离鉴定及其降解特性
Isolation and identification of a MC-RR degradation bacillus and its degradation characteristics
摘要
Abstract
In order to obtain a bacillus which can degrade microcystin-RR, a MC-RR degradation bacterium CM1 was isolated from Taihu Lake by heating for gathering of bacterial spore. The CM1 was identified as Ly-sinibacillus boronitolerans by morphological features, physiological and biochemical characteristics, as well as phylogenetic analysis of 16S rDNA sequences. The effects of the temperature and pH on the biodegradation activity of MC-RR by strain CM1 were investigated. MC-RR was degraded from 12.77 μg/mL to 1.67 μg/mL in 60 h with the degradation rate of 86. 90% . The optimal temperature and pH for biodegradation of MC-RR were 37℃ and 7.0, respectively. Based on the research of MC-RR degradation by the extracellular and intracellular substances, both of them could degrade MC-RR, furthermore, intracellular substance had a stronger degradation activity, MC-RR of 7. 27 μg/mL could be completely degradated in 12 h. The research of pure MC-RR degradation bacteria and removing MC-RR in water was useful for the further application of the bacteria of L. boronitolerans.关键词
微囊藻毒素/耐硼赖氨酸芽孢杆菌/生物降解/16S rDNAKey words
microcystin/ Lysinibacillus boronitolerans/ biodegradation/ 16S rDNA分类
资源环境引用本文复制引用
崔亚青,俞鲁,高雪莲,马田田,杨兴明,沈其荣..一株高效MC-RR降解菌的分离鉴定及其降解特性[J].环境工程学报,2013,7(2):783-790,8.基金项目
江苏省科技支撑计划(SDE201078305) （SDE201078305）
