Acholeplasma cavigenitalium
(Hill, 1992)
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; N.L. n. cavia – a guinea pig, L. pl. n. genitalia – the genitals, N.L. pl. gen. n. cavigenitalium – of the genitals of a guinea pig
Taxonomy
Acholeplasmatales – Acholeplasmataceae – Acholeplasma – Acholeplasma cavigenitalium, related to Acholeplasma axanthum (16S rRNA gene sequence similarity – 91.02%) (Fig. 1)
Type strain
GP3T (guinea pig, UK, ≤1992), (Fig. 2, 16S rRNA gene sequence)
Genomes
no genomes published (per 11/05/2024)
Cell morphology
spherical – coccoid
Colony morphology
fried egg morphology
Metabolism
non-fermentative, non-arginine-hydrolyzing, non-urea-hydrolyzing, non-sterol requiring; temperature optimum for growth is 33°C
Host
guinea pig
Habitat
genital tract
Disease(s)
unknown, considered to be a commensal
Pathogenicity
factors unknown
Epidemiology
unknown, once isolated from the vaginas of several guinea pigs
Diagnosis
cultivation and species identification by MALDI-ToF MS or genetically
Fig. 1. Maximum likelihood tree showing the phylogenetic position of Acholeplasma cavigenitalium GP3T 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)