Halothiobacillus is a genus in the class Gammaproteobacteria. Both species are obligate aerobic bacteria; they require oxygen to grow. They are also halotolerant; they live in environments with high concentrations of salt or other solutes, but don't require them in order to grow.
GENUS
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Halothiobacillus is a genus in the class Gammaproteobacteria. Both species are obligate aerobic bacteria; they require oxygen to grow. They are also halotolerant; they live in environments with high concentrations of salt or other solutes, but don't require them in order to grow.
The type species of this genus, Halothiobacillus neapolitanus used to be members of the genus Thiobacillus, before they were reclassified in 2000. A further two former Thiobacillus spp. were also reclassified as Halothiobacillus halophilus and Halothiobacillus hydrothermalis, both of which were obligate halophiles rather than being halotolerant and showed comparatively low 16S rRNA gene identity to Halothiobacillus neapolitanus and so were reclassified to the newly designated genus Guyparkeria in 2017, as Guyparkeria halophila and Guyparkeria hydrothermalis.
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