Wikipedia
Acidisphaera
Acidisphaera is a genus in the phylum Proteobacteria ( Bacteria). The genus contains a single species, namely A. rubrifaciens with the following characteristics:
- strictly aerobic, light preferred
- mesophilic
- acidophilic (3.5–6.0 pH, optima of 4.5-5.0)
- bacteriochlorophyll (BChl a) and carotenoids production (salmon-pink colonies), the former contained zinc if grown in the presence of 1 mM zinc sulfate.
- chemo-organotrophic
- Gram-negative, as expected from a proteobacterium
- isolated from acidic hot springs and mine drainage
- non-motile
- cocci / coccobacilli
- Part of the major acidophilic alphaproteobacterial group with the genera Acidiphilium and Rhodopila