ISSN:
1432-072X
Keywords:
Thiobacillus hydrothermalis
;
Obligate chemolithoautotroph
;
Hydrothermal vent
;
Ubiquinone
;
Q-8
;
16S rRNA
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Abstract A novel obligately chemolithotrophic Thiobacillus species isolated from a deep-sea hydrothermal vent is described. This organism grows lithoautotrophically on thiosulphate, tetrathionate, sulphide and sulphur which are oxidized to sulphate. The isolate is slightly halophilic and markedly halotolerant, showing optimum growth at pH 7.5 and at 35°C. The G+C content of the DNA is 67.1 mol%. The 16S rRNA sequence is distinct from any other Thiobacilli sequences. Phylogenetic analysis shows the organism to be a representative of the γ-group of proteobacteria and a specific relative of Thiobacillus neapolitanus. The ubiquinone is ubiquinone-8. These characters distinguish the isolate from any other Thiobacillus or Thiomicrospira species previously reported and is a new species described as Thiobacillus hydrothermalis. The type strain is isolate R3, DSM7121.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00244261