The metabolic and physiological properties of strain
CIR29812T are very similar to those of T. hydrogeniphilum
SL6T. Contrary to other members of the family Thermodesulfobacteriaceae,
both organisms are thermophilic,
chemolithoautotrophic, sulfate-reducing bacteria, which
are non-fermenting, unable to reduce thiosulfate or sulfite,
and require NaCl for growth (Table 1). However, their
optimal temperature and NaCl range for growth and their
resistance to streptomycin and penicillin represent phenotypic
characteristics that distinguish these sulfate-reducing
chemolithoautotrophs from one another. In addition,
the 16S rRNA gene sequences of strain CIR29812T and
T. hydrogeniphilum SL6T are very different (10?3% distance).
Moreover, when analysed using the same method
(HPLC), a 15% difference discriminates the G+C content
of their DNA. Lastly, the major fatty acids present in
strain CIR29812T differed from those of T. commune,
the type species of the type genus of the family.
The metabolic and physiological properties of strainCIR29812T are very similar to those of T. hydrogeniphilumSL6T. Contrary to other members of the family Thermodesulfobacteriaceae,both organisms are thermophilic,chemolithoautotrophic, sulfate-reducing bacteria, whichare non-fermenting, unable to reduce thiosulfate or sulfite,and require NaCl for growth (Table 1). However, theiroptimal temperature and NaCl range for growth and theirresistance to streptomycin and penicillin represent phenotypiccharacteristics that distinguish these sulfate-reducingchemolithoautotrophs from one another. In addition,the 16S rRNA gene sequences of strain CIR29812T andT. hydrogeniphilum SL6T are very different (10?3% distance).Moreover, when analysed using the same method(HPLC), a 15% difference discriminates the G+C contentof their DNA. Lastly, the major fatty acids present instrain CIR29812T differed from those of T. commune,the type species of the type genus of the family.
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