Acidimicrobium ferrooxidans gen nov, sp nov: Mixed-culture ferrous iron oxidation with Sulfobacillus species
Acidimicrobium ferrooxidans gen nov, sp nov: Mixed-culture ferrous iron oxidation with Sulfobacillus species
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DOI：
10.1099/00221287-142-4-785
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发表时间：
1996-04-01
期刊：
影响因子：
--
通讯作者：
Norris, PR
中科院分区：
文献类型：
--
作者：
Clark, DA;Norris, PR
本文描述了一种新的氧化亚铁、中等嗜热、嗜酸细菌--氧化亚铁酸微生物。该物种的两个菌株的不同之处只在于其中一个菌株，以前被称为Th3菌株，在细丝中生长的倾向。染色体DNA碱基组成在67-69摩尔%G+C之间。该物种从空气中固定二氧化碳的能力强于硫杆菌属的铁氧化耐热嗜酸细菌，后者需要更高的二氧化碳浓度才能实现最佳的自养生长。在空气中，氧化亚铁硫杆菌与硫杆菌或嗜酸硫杆菌混合培养的亚铁氧化比这三个菌株的纯培养更广泛，混合培养中亚铁氧化的大部分可能是硫杆菌的活性所致，硫杆菌对铁的耐受性较强，可能是利用氧化亚铁硫杆菌的有机化合物进行混合营养生长的。
A new species of ferrous-iron-oxidizing, moderately thermophilic, acidophilic bacteria, Acidimicrobium ferrooxidans, has been described. Two isolates of the species differed only in the tendency of one, previously known as strain TH3, to grow in filaments. The chromosomal DNA base composition is between 67 and 69 mol% G + C. The capacity of this species to fix CO2 from air was greater than that of iron-oxidizing thermoacidophiles of the genus Sulfobacillus, which required an enhanced CO2 concentration for optimum autotrophic growth. Under air, ferrous iron oxidation in mixed cultures of A. ferrooxidans with either Sulfobacillus thermosulfidooxidans or Sulfobacillus acidophilus was more extensive than in pure cultures of these three strains, The greater part of ferrous iron oxidation in mixed cultures probably resulted from activity of the Sulfobacillus species, which possess a greater tolerance of ferric iron, and which presumably grew mixotrophically utilizing organic compounds from A. ferrooxidans.