Acholeplasma vituli
(Angulo et al., 2000)
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. n. vitulus – calf, L. gen. n. vituli – of a calf (referring to the isolation of the organism from foetal calf serum)
Taxonomy
Acholeplasmatales – Acholeplasmataceae – Acholeplasma – Acholeplasma vituli, related to Acholeplasma morum (16S rRNA gene sequence similarity – 96.36%) (Fig. 1)
Type strain
FC 097-2T (fetal calf serum, The Netherlands, ≤2000), (Fig. 2, 16S rRNA gene sequence)
Genomes
one completed (92-19 – The Netherlands) (per 11/05/2024)
Cell morphology
spherical – coccoid
Colony morphology
small colonies with fried egg morphology
Metabolism
fermentation of glucose; non-arginine-hydrolyzing, non-urea-hydrolyzing; non-sterol requiring; temperature optimum for growth is 33°C
Host
unknown
Habitat
unknown
Disease(s)
unknown, considered to be a commensal or contaminant
Pathogenicity
factors unknown
Epidemiology
unknown, once isolated from fetal calf serum
Diagnosis
cultivation and species identification by MALDI-ToF MS or genetically
Fig. 1. Maximum likelihood tree showing the phylogenetic position of Acholeplasma vituli FC 097-2T 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)