Mycoplasma verecundum
(Gourlay et al., 1974)
Etymology
Gr. n. mukes – fungus, Gr. neut. n. plasma – anything formed, N.L. neut. n. Mycoplasma – fungus form; L. neut. adj. verecundum – unobtrusive (referring to the lack of biochemical characteristics)
Taxonomy
Mycoplasmatales – Mycoplasmataceae – Mycoplasma – Mycoplasma verecundum (Synoviae cluster), related to Mycoplasma nasistruthionis (16S rRNA gene sequence similarity – 95.20%) (Fig. 1)
Type strain
107T (cattle, UK, 1973), (Fig. 2, 16S rRNA gene sequence)
Genomes
one completed (107T – UK), one draft genome (also the type strain) (NCBI Genome deposit per 11/05/2024)
Cell morphology
spherical – coccoid
Colony morphology
fried egg morphology (Fig. 3)
Metabolism
non-fermentative, non-arginine-hydrolyzing, non-urea-hydrolyzing
Host
cattle, possibly wild birds
Habitat
unknown
Disease(s)
singularly isolated from the eye of calves with conjunctivitis
Pathogenicity
factors unknown
Epidemiology
unknown, has also been isolated from wild birds (own observation)
Diagnosis
cultivation and species identification by MALDI-ToF MS, serology or genetically
Fig. 1. Maximum likelihood tree showing the phylogenetic position of Mycoplasma verecundum 107T within the Synoviae cluster of Mycoplasmataceae 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)
CTGGCTGTGTGCCTAATACATGCATGTCGAGCGGAGTTCTTCGGAACTTAGCGGCGAATGGGTGAGTAACACGTACTTAACGTACCTTTTAGATTGGGACAACGATGAGAAATTATCGCTAATACCGGATACTTATAAGGAAGGCATCTTCCTTATATAAAAGGAGCTTTCAAGCTCCACTAAAAGATCGGGGTGCGGAACATTAGCTAGTTGGTGAGGTAATGGCTCACCAAGGCTATGATGTTTAACGGGGTTGAGAGACTGATCCGTCACACTGGGACTGAGATACGGCCCAGACTCCTACGGGAGGCAGCAGTAGGGAATTTTCCACAATGGACGAAAGTCTGATGGAGCGACACAGCGTGCAGGATGAAGGCCTTCGGGTTGTAAACTGCTGTTATTTAGGATGAAAAAATAGTAGAGGAAATGCTATTATCTTGACAGTACTAAATCAGAAAGCAACGGCTAACTATGTGCCAGCAGCCGCGGTAATACATAGGTTGCAAGCGTTATCCGGAATTATTGGGCGTAAAGCGTCTGTAGGTTGTTTGTTAAGTCTGGCGTCAAAACTTGGGGCTCAACCCCAAATCGCGTTGGATACTGGCAAACTAGAATTGTGTAGAGGTTAACGGAATTCCTTGTGAAGCGGTGAAATGCGTAGATATAAGGAAGAACACCAACTTGGCGAAGGCAGTTAACTGGGCACATATTGACACTGAGAGACGAAAGCGTGGGGAGCAAACAGGATTAGATACCCTGGTAGTCCACGCCGTAAACGATGATGATTAGCTGATGGGAACCATCGGCGCAGCTAACGCATTAAATCATCCGCCTGAGTAGTATGCTCGCAAGAGTGAAACTTAAAGGAATTGACGGGGATCCGCACAAGCGGTGGAGCATGTGGTTTAATTTGAAGATACGCGTAGAACCTTACCCACTCTTGACATCTTCTGCAAAGCTATAGAGATATAGTGGAGGTTAACAGAATGACAGATGGTGCATGGTTGTCGTCAGCTCGTGTCGTGAGATGTTCGGTTAAGTCCTGCAACGAGCGCAACCCTTATCCTTAATTAAATACCTTAAGGAGACTGCCCGGGTAACTGGGAGGAAGGTGGGGACGACGTCAAATCATCATGCCTCTTACGAGTGGGGCAACACACGTGCTACAATGGAAGGTACAAAGAGAAGCAATATGGCGACATGGAGCAAATCTCAAAAAACCTTTCTCAGTTCGGATTGTAGTCTGCAACTCGACTACATGAAGTCGGAATCGCTAGTAATCGTAGATCAGCTACGCTACGGTGAATACGTTCTCGGGTCTTGTACACACCGCCCGTCACACCATGGGAGCTGGTAATGCCCGAAGTCGGTTTAGTCAACTACGGAGACAACTGCCTAAGGCAGGACTGGTGACTGGGGTGAAGTCGTAACAAGGT
Fig. 2. 16S rRNA gene sequence of Mycoplasma verecundum 107T (Accession number: NR_125608)
Fig. 3. Flat colonies of Mycoplasma verecundum 107T on modified Hayflick’s agar after 4 days of incubation exhibiting characteristic fried egg morphology. Bar, 1 mm. Credits: Joachim Spergser (Vetmeduni Vienna)