Fe^2＋对嗜铁钩端螺旋菌L.ferriphilum生长活性的影响  

Effect of Fe^(2+) on growth activity of L. ferriphilum

作　　者：高健[1] 康健[1] 吴学玲[1] 徐竞竞 李邦梅[1] 邱冠周[1] 

机构地区：[1]中南大学资源加工与生物工程学院

出　　处：《中国有色金属学报》2008年第1期159-162,共4页The Chinese Journal of Nonferrous Metals

基　　金：国家创新群体资助项目(50621063);国家重点基础研究发展计划资助项目(2004CB619201)

摘　　要：以分离于江西某铜矿的嗜铁钩端螺旋菌(L.ferriphilum YSK)菌株为研究对象,报道不同Fe2+浓度对L.ferriphilum生长活性的影响。结果表明,YSK菌株生长最适宜的Fe2+浓度约为0.1 mol/L。当初始Fe2+浓度为0.4 mol/L时,进入对数生长期前很明显需要一个较长的延迟期,表明该Fe2+浓度对细胞的生长产生较强的抑制作用;当初始Fe2+浓度为0.6 mol/L时,YSK菌株的生长完全受到抑制。尽管高浓度的Fe2+抑制细胞的生长,但受到抑制而不生长繁殖的YSK细胞仍然具有氧化Fe2+的能力。The effect of different ferrous iron concentrations on the growth activity of L. ferriphilum was reported with L. ferriphilum YSK being developed objective of this research. The results show that YSK optimally grows at 0.1 mol/L of ferrous iron. In the culture initially containing 0.4 mol/L of ferrous iron, a long period of lag is observed, which is followed by exponential phase of microbial growth. However, in the culture initially containing 0.6 mol/L of ferrous iron, no evidence of bacterial growth is observed. Although ferrous iron is concentrations of 0.4 mol/L can prohibit the growth of cells completely, the non-growing population ofL. ferriphilum YSK strain is able to oxidize ferrous iron.

关 键 词：L.ferriphilum YSK菌株 Fe^+2 生长活性 

分 类 号：TF18[冶金工程—冶金物理化学]