【作者】 吴学玲； 张真真； 刘莉莉； 邓凡凡；

【Author】 Xueling Wu Zhenzhen Zhang Lili Liu Fanfan Deng Key Laboratory of Biometallurgy,Ministry of Education,School of Minerals processing and Bioengineering,Central South University,Changsha 410083,China I

【机构】 中南大学资源加工与生物工程学院 生物冶金教育部重点实验室；

【摘要】 通过摇瓶实验测定6株嗜酸氧化亚铁硫杆菌（Acidithiobacillus ferrooxidans,At.ferrooxidans）DX5、DY15、DY26、YTW、GD-0和GD-B对Cu²⁺、Zn²⁺耐受能力的差异。结果表明:不同菌株对重金属离子的耐受能力有显著差异,6株At.ferrooxidans在150 mM Cu²⁺存在的培养条件下,它们的亚铁氧化活性从高到低依次是DY26、DX5、DY15、GD-B、GD-0、YTW;在含有200 mM Zn²⁺的培养条件下,它们的亚铁氧化活性从高到低依次是YTW、GD-B、DY26、GD-0、DX5、DY15;同一菌株对不同重金属的抗性是不同步的,菌株DX5对铜离子具有高的耐受能力而对锌离子非常敏感;菌株YTW对铜离子耐受能力最低,但是却有最高的锌离子耐受能力。更多还原

【Abstract】 The effects of Cu²⁺ and Zn²⁺on the oxidation activity of six Acidithiobacillus ferrooxidans strains were investigated.The results show that different strains have significantly different tolerance to heavy metal ions.Under 150 mM Cu²⁺,the ferrous oxidation activity of six Atferrooxidans strains from high to little is DY26、DX5、DY15、GD-B、GD-0、YTW.When the culture solution containing 200 mM Zn²⁺,the ferrous oxidation activity of six At.ferrooxidans strains from high to little is YTW、GD-B、DY26、GD-0、DX5、DY15.The same strain resistant to different heavy metals is not synchronized.DX5 has a high tolerance to copper but it is very sensitive to zinc.On the other hand,YTW has lowest tolerance to copper, but can resist to high concentration of znic.更多还原