Asteroleplasma anaerobium
(Robinson & Freundt, 1987)
Etymology
Gr. pref. a – not, without, N.L. n. sterolum – sterol, Gr. neut. n. plasma – anything formed, N.L. neut. n. Asteroleplasma – a form for which sterol is not required for growth; Gr. pref. an – not, without, Gr. n. aer – air, Gr. n. bios – life, N.L. neut. adj. anaerobium – not living in air
Taxonomy
Anaeroplasmatales – Anaeroplasmataceae – Asteroleplasma – Asteroleplasma anaerobium, separated branch (Fig. 1), type and only species of genus Asteroleplasma
Type strain
161T (not available, initially isolated from ovine rumen, USA, ≤1972), (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; no sterol required for growth
Host
ruminants
Habitat
rumen
Disease(s)
natural inhabitant of the rumen
Pathogenicity
apathogenic
Epidemiology
unknown
Diagnosis
anaerobic cultivation and genetic species identification
Fig. 1. Maximum likelihood tree showing the phylogenetic positions of Asteroleplasma anaerobium 161T next to genus Anaeroplasma and Acholeplasma based on 16S rRNA gene sequences. 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)