Confirmation that Thiobacillus halophilus and Thiobacillus hydrothermalis are distinct species within the gamma-subclass of the Proteobacteria
UNSPECIFIED. (1998) Confirmation that Thiobacillus halophilus and Thiobacillus hydrothermalis are distinct species within the gamma-subclass of the Proteobacteria. ARCHIVES OF MICROBIOLOGY, 170 (2). pp. 138-140. ISSN 0302-8933Full text not available from this repository.
Thiobacillus halophilus and Thiobacillus hydrothermalis share 98.7% similarity in 16S rRNA sequence, possess similar gross DNA composition (64.2 and 67.4 mol% G+C values, respectively), and have similar physiological properties. While this might have indicated that they were strains of a single species, DNA-DNA hybridization between the type strains of the two species showed only 59% hybridization, indicating the organisms to be different at the species level. Thiobacillus neapolitanus is the phylogenetically nearest neighbour of T. halophilus and T. hydrothermalis (91.6-92.1% similarity in 16S rRNA sequence) and is the only other Thiobacillus in the gamma-subclass of the Proteobacteria that can be regarded as exclusively related to these two species. The 16S rRNA gene sequences of these three species are so different from those of the other thiobacilli in the gamma-subclass that they justify recognition as a distinct phyletic group. Their comparative properties are summarized.
|Item Type:||Journal Article|
|Subjects:||Q Science > QR Microbiology|
|Journal or Publication Title:||ARCHIVES OF MICROBIOLOGY|
|Official Date:||August 1998|
|Number of Pages:||3|
|Page Range:||pp. 138-140|
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