School of Biological Sciences, College of Natural Sciences, Bangor University, Bangor LL57 2UW, UK.
Int J Syst Evol Microbiol. 2013 Nov;63(Pt 11):4018-4025. doi: 10.1099/ijs.0.049759-0. Epub 2013 May 24.
Twelve strains of iron-oxidizing acidithiobacilli isolated from acidic sites throughout the world, including some previously shown by multi-locus sequence analyses and DNA-DNA hybridization to comprise a distinct species, were characterized in terms of their physiologies. The bacteria were shown to be obligately chemolithotrophic, acidophilic and mesophilic, and grew in both oxic and anoxic environments, using ferrous iron, reduced sulfur or hydrogen as electron donors and oxygen or ferric iron as electron acceptors. Some of the strains grew at lower pH than those reported for the two recognized iron-oxidizing Acidithiobacillus species, Acidithiobacillus ferrooxidans and Acidithiobacillus ferrivorans. Tolerance of transition metals and aluminium, and also specific rates of iron oxidation and reduction, were more similar to those of A. ferrooxidans (to which the strains are more closely related) than to A. ferrivorans. The name Acidithiobacillus ferridurans sp. nov. is proposed to accommodate the 12 strains, with the type strain being JCM 18981(T) ( = ATCC 33020(T)).
从世界各地的酸性环境中分离出的 12 株氧化亚铁硫杆菌菌株，包括一些先前通过多位点序列分析和 DNA-DNA 杂交显示构成独特物种的菌株，在生理方面进行了特征描述。这些细菌被证明是专性化能自养、嗜酸和中温的，能够在有氧和无氧环境中生长，使用亚铁离子、还原硫或氢气作为电子供体，氧气或高铁离子作为电子受体。一些菌株的生长 pH 值低于已报道的两种公认的氧化亚铁硫杆菌物种，即氧化亚铁硫杆菌和高铁硫杆菌。对过渡金属和铝的耐受性，以及铁的氧化和还原的特定速率，与氧化亚铁硫杆菌（与菌株的亲缘关系更密切）更相似，而与高铁硫杆菌不同。建议用 Acidithiobacillus ferridurans sp. nov. 来容纳这 12 株菌株，其中的模式菌株为 JCM 18981(T)（ = ATCC 33020(T)）。
