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中文摘要：
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Fe^2＋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Fe^2＋浓度约为0.1 mol/L。当初始Fe^2＋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Fe^2＋浓度对细胞的生长产生较强的抑制作用；当初始Fe^2＋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Fe^2＋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Fe^2＋的能力。
英文摘要：
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.
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