Eperythrozoon (Mycoplasma) parvum

(Splitter, 1950)

Etymology

Gr. n. mukes – fungus, Gr. neut. n. plasma – anything formed, N.L. neut. n. Mycoplasma – fungus form; L. neut. adj. parvum – small

Taxonomy

Mycoplasmatales – Mycoplasmataceae – Mycoplasma – Mycoplasma parvum (Hemoplasma cluster, Eperythrozoon subcluster), related to Mycoplasma suis (16S rRNA gene sequence similarity – 95.49%) (Fig. 1), transfer of Eperythrozoon parvum to genus Mycoplasma has not been published

Type strain

not available, not cultivated in/on cell free media (Fig. 2, 16S rRNA gene sequence of isolate Indiana)

Genomes

one completed (Indiana – USA) (NCBI Genome deposit per 11/05/2024)

Cell morphology

spherical – coccoid – rod-shaped

Colony morphology

not cultured on a cell free medium

Metabolism

fermentation of glucose, assimilation of glycerol; non-arginine-hydrolyzing, non-urea-hydrolyzing

Host

swine

Habitat

blood

Disease(s)

considered to be apathogenic, commonly asymptomatic infection

Pathogenicity

factors unknown

Epidemiology

unknown, probably worldwide occurrence in domestic pigs

Diagnosis

PCR

Fig. 1. Maximum likelihood tree showing the phylogenetic positions of Mycoplasma parvum isolate Indiana within the Hemoplasma cluster of Mycoplasmataceae based on 16S rRNA gene sequences. The sequence of Mycoplasma hyopneumoniae J^T 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)

>Mycoplasma parvum isolate Indiana

CTGGTGGTATGCATAACACATGCAAGTCGAACGAAAAAGGTCTTCGGGCCTTTTTAGTGGCAAACGGGCGAGTAACACATATTTAACTTGCTCATCCGAGGAGAATAGCAGCCCGAAAGGGCTATTAATACGCCATAGTTTTAAATTAGTGAATTAATTTAAATTAAAGGAGGCTGCCGAAAGGTGGCCTCGCGGATGAATAGGAATATGTCCTATTAGGTCGTTGGAGAGGTAATGGCTCACCAAGCCGATGATGGGTAGCTGGACTGAGAGGTTGAACAGCCGCAATGGGATTGAGAAATGGCCCATATTCCTACGGGAAGCAGCAGTGAGGAATTTTTCACAATGGACGAAAGTCTGATGGAGCAATACCACGTGAACGATGAAGGTCTTCTGATTGTAAAGTTCTTTTATTTAGGAAAAAAAGCGCGGCAGGAAATGGCCGCGCCTTGATTGTACTAATTGAATAAGTGACAGCTAACTATGTGCCAGCAGCTGCGGTAAAACATAGGTCACGAGCATTATCCGGATTTATTGGGCGTAAAGGAAGCGTAGGCTGAAATGTGTATTCATTGTTAAAAATATTTGCTTAACAAGTGTTCGCGGTGAAGATTGCATTTCTAGAATTAGTTAGGGGGTACTGGAATTCAATGTGTAGTGGTGGAATACGTAGATATATTGAGGAACACCAGAGGCTAAGGCGAGTGCCTGGAACATAATTGACGCTGAGGCTTGAAAGCGTGGGTAGCAAATGGGATTAGATACCCCAGTAGTCCACGCCGTAAACGATGGGTATTAGTCATTTGGATTTAAGACTGAGTGATGTAGCTAACGCGTTAAATACCCCGCCTGGGTAGTATATATGCAAATATGAAACTCAAAGAAATTGACGGGGACCTGAACAAGTGGTGGAGCATGTTGCTTAATTCGTTAATACACGCAAAACCTTACCGAGGCTTGCAATCCTCCGCAACGCTATATAAATATAGTTGAGGTTATCGGAGTGACAGGTGGTGCATGGCTGTCGTCAGCTCGTGTCTTGAGATGTTTGGTTAAGTCCCGTAACGAGCGCAACCCTTCTTATTAGTTGCTTAGTTCTAATAAGACTGAATCGTAAGATCTAGGAAGGATGGGGCCAAGTCAAGTCATCATGCCCCTTATGCCTCGGGCTGCAAACGTGCTACAATGGTAGATACAATGTGTGACAATCTAGCGATAGTGAGTCAATCACCTAAAGTCTATCTCAGTCCGGATAAAAGGCTGCAATTCGCCTATTTGAAGATGGAATCACTAGTAATCCTGTGTCAGCTATATCAGGGTGAATACGTTCCCAGGTCTTGTACACACCGCCCGTCAAACTACGAAAGAAAGTACTAATTAAAACCGTATTTAATTACGTCTAGATTGGTAATTTTGATTGGAGTTAAGTCGTAACAAGGT

Fig. 2. 16S rRNA gene sequence of Mycoplasma parvum isolate Indiana^T(Accession number: CP006771)

Species assigned by: Splitter, E.J. 1950. Eperythrozoon suis n. sp. and Eperythrozoon parvum n. sp., two new blood parasites of swine. Science (Washington) 111: 513-514.