acidisoma acidisoma acidisoma is a genus in the phylum pseudomonadota (bacteria). it contains two species, acidisoma tundrae and acidisoma sibiricum, both two acidophilic (ph 3.0–7.6) and psychrotolerant (2–30 °c) bacteria with poly-β-hydroxybutyrate granules, isolated from acidic sphagnum-dominated tundra and siberian wetlands in russia. acidisoma scientific classification domain: bacteria phylum: pseudomonadota class: alphaproteobacteria order: rhodospirillales family: acetobacteraceae genus: acidisomabelova et al., 2009 type species a. tundrae belova et al., 2009 etymology the name acidisoma derives from:neo-latin noun acidum (from latin adjective acidus -a -um, sour, tart, acid), an acid; greek neuter gender noun soma (σῶμα), body; neo-latin neuter gender noun acidisoma, an acid (-requiring) body.