Anaeroplasma abactoclasticum
(Robinson et al., 1975)
Etymology
Gr. pref. a – not, without, Gr. n. aer – air, Gr. neut. n. plasma – anything formed, N.L. neut. n. Anaeroplasma – a form not living with air; Gr. pref. a – not, without, N.L. dim. n. bact- – part of N.L. n. bacterium – a small rod, N.L. adj. clasticus – breaking, N.L. neut. adj. abactoclasticum – not bacteriolytic (referring to the organism’s inability to digest bacterial cells)
Taxonomy
Anaeroplasmatales – Anaeroplasmataceae – Anaeroplasma – Anaeroplasma abactoclasticum, related to Anaeroplasma bactoclasticum and Anaeroplasma varium (16S rRNA gene sequence similarities – 92.12 and 92.58%, respectively) (Fig. 1); type species of genus Anaeroplasma
Type strain
6-1T (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 starch, maltose, and cellobiose; non-arginine-hydrolyzing, non-urea-hydrolyzing
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 position of Anaeroplasma abactoclasticum 6-1T close to genus 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)