Characterization of XXXX sp. nov., a moderately thermophilic acidophile.

@entity3884 @entity17464 @entity404 @entity39337 @entity599 @entity375 @entity413
Two isolates of a novel, moderately thermophilic Thiobacillus species have been studied. The isolates, KU and BC13, are Gram-negative, motile bacteria having a pH optimum for growth of 2-2.5 and an optimum growth temperature of 45 degrees C. Both isolates are capable of chemolithotrophic growth on reduced @entity599 substrates. They can also use molecular @entity3884 as an electron donor. These two isolates can grow mixotrophically with @entity599 or @entity17464 and @entity375 extract or @entity413 . The G+C content is 63.1-63.9 mol% and the isolates exhibit no significant DNA homology to any other Thiobacillus species. Strains KU and BC13 both contain ubiquinone Q-8. 16S rRNA analysis indicates that these strains belong to a group of bacteria which includes other chemolithotrophic @entity599 oxidizers such as @entity404 and T. thiooxidans. These characteristics distinguish KU and BC13 from any other species described previously and they thus represent the first acidophilic, thermophilic Thiobacillus species, named @entity39337 sp. nov., to be described. The type strain, referred to as strain KU in this paper, has been deposited in the Deutsche Sammlung von Mikroorganismen, Braunschweig, FRG, with the accession number @entity39337 .
