Conditional Cooperation between Rhodococcus sp.YYL and Bacillus cereus HZX during the Degradation of

• 作 者: ZubiLiu;ZhixingHe;ZhenmeiLu;
• 机 构: College of Life Sciences,Zhejiang University,Hangzhou 310058,China
• 出 处: 第十八次全国环境微生物学学术研讨会
• 发表日期: 2015年期

　　Tetrahydrofuran(THF)is widely used in industry as the organic solvent and increasing emissions in the environment.We isolated a THF-degrading bacteria strain Rhodococcus sp.YYL and a non-degrading Bacillus cereus HZX from soil synchronously.The degradation rate of strain YYL can reach 137.6 mg THF/h·g dry weight,tolerance concentration of THF can reach 200 mM.During THF degradation,the interaction between THF-degrading strain YYL and no THF-degrading strain HZX depended on the cultural environment for strain YYL.Under the optimal initial pH 8.26,strain YYL could develop high THF-degrading ability on its own,and the presence of HZX didnt exhibit beneficial effects on THF degradation.Under the adverse initial pH 7.0,high abundance of HZX could stimulate gene thm(encoding tetrahydrofuran monooxygenase)expression to accelerate THF degradation,which resulted in decreasing pH and higher ratio of HZX.