{{Short description|Genus of bacteria}} {{Italic title}} {{Automatic_taxobox | taxon = Acidisphaera | authority = Hiraishi ''et al''. 2000<ref name=sgmj/> | type_species = ''A. rubrifaciens'' | subdivision_ranks = Species }}
'''''Acidisphaera''''' is a genus in the phylum Pseudomonadota (Bacteria). The genus contains a single species,<ref name=main/> namely ''A. rubrifaciens'' with the following characteristics:<ref name=sgmj>{{Cite web |url=http://ijs.sgmjournals.org/cgi/content/abstract/50/4/1539 |title=''Acidisphaera rubrifaciens'' gen. nov., sp. nov., an aerobic bacteriochlorophyll-containing bacterium isolated from acidic environments -- Hiraishi et al. 50 (4): 1539 -- International Journal of Systematic and Evolutionary Microbiology |access-date=2011-05-27 |archive-url=https://web.archive.org/web/20061208043725/http://ijs.sgmjournals.org/cgi/content/abstract/50/4/1539 |archive-date=2006-12-08 |url-status=dead }}</ref> * 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''
==Etymology== The name ''Acidisphaera'' derives from:<br/>Neo-Latin noun ''acidum'' (from Latin adjective ''acidus'', sour), an acid; Latin feminine gender noun ''sphaera'', a ball, globe, sphere; Neo-Latin feminine gender noun ''Acidisphaera'', acid (-requiring) coccoid microorganism.<ref name=main>{{lpsn|a/acidisphaera.html|Acidisphaera}}</ref> <br/>While the specific epithet ''rubrifaciens'' comes from the Latin adjective ''ruber'' -''bra'' -''brum'', red; Latin v. ''facio'', to make; Neo-Latin participle adjective ''rubrifaciens'', red-producing.)<ref name=main/>
==See also== * Bacterial taxonomy * Microbiology
== References == {{Reflist|2}}
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Category:Bacteria genera Category:Rhodospirillales Category:Monotypic bacteria genera