Acholeplasma parvum
(Atobe et al., 1983)
Etymology
Gr. pref. a – not, without, Gr. n. chole – bile, Gr. neut. n. plasma – anything formed, N.L. neut. n. Acholeplasma – a form for which cholesterol (a constituent of bile) is not required for growth; L. neut. adj. parvum – small
Taxonomy
Acholeplasmatales – Acholeplasmataceae – Acholeplasma – Acholeplasma parvum, related to Acholeplasma palmae (16S rRNA gene sequence similarity – 94.54%) (Fig. 1)
Type strain
H23MT (horse, Japan, ≤1983), (Fig. 2, 16S rRNA gene sequence)
Genomes
no genome published (per 11/05/2024)
Cell morphology
spherical – coccoid
Colony morphology
fried egg morphology
Metabolism
fermentation of glucose; non-arginine-hydrolyzing, non-urea-hydrolyzing; non-sterol requiring; temperature optimum for growth is 33°C
Host
horse
Habitat
mouth
Disease(s)
unknown, considered to be a commensal
Pathogenicity
factors unknown
Epidemiology
unknown
Diagnosis
cultivation and species identification by MALDI-ToF MS or genetically
Fig. 1. Maximum likelihood tree showing the phylogenetic position of Acholeplasma parvum H23MT within genus Acholeplasma based on 16S rRNA gene sequences. The sequence of Mycoplasma hyopneumoniae JT was used as out-group (Hyopneumoniae cluster). Numbers at nodes represent bootstrap confidence values (1000 replications). Only values > 80% are shown. Bar, number of substitutions per nucleotide position. Credits: Joachim Spergser (Vetmeduni Vienna)