| Species/Subspecies: | Mesomycoplasma dispar | ||||||||||
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| Etymology: | Genus name: between other mycoplasmas (fungus shaped). Species epithet: different. | ||||||||||
| Significance: | [Of minor importance] | ||||||||||
| Alternative Species Name(s): | Mycoplasma dispar | ||||||||||
| Taxonomy: | Class Mollicutes Order Mycoplasmoidales Family Metamycoplasmataceae Genus Mesomycoplasma |
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| Type Strain: | 462/2 = ATCC 27140 = NTCC 10125 | ||||||||||
| Macromorphology (smell): | Forms small and atypical colonies, which are not umbonated (no "fried egg appearance") and should be observed in a microscope. | ||||||||||
| Micromorphology: | The small cells are coccoid or short filamentous. | ||||||||||
| Gram +/Gram -: | G-, but is normally not gram stained because the cells will then be fragmented. | ||||||||||
| Metabolism: | Facultatively anaerobic. M. dispar is a glucose fermenter, which lowers the pH in the growth medium. | ||||||||||
| Catalase/Oxidase: | |||||||||||
| Spec. Char.: | |||||||||||
| Special Media: | |||||||||||
| Disease: | Pneumonia and sometimes mastitis.
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| Virulence Factors: | Can produce hydrogen peroxide (H2O2) and biofilm. | ||||||||||
| Genome Sequence: |
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| 16S rRNA Seq.: |
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| Taxonomy/phylogeny:
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About 15 species have been described within the genus Mesomycoplasma. Mesomycoplasma dispar is closely related to M. ovipneumoniae, M. hyopneumoniae as well as M. flocculare.
Note that the letter M in the phylogenetic tree (Fig. 230:1) can mean Mycoplasma, Mesomycoplasma, Metamycoplasma, Mycoplasmoides or Mycoplasmopsis. |
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| Comment: | Based on whole genome sequencing, the taxonomy of mycoplasmas has recently undergone a comprehensive revision. The new taxonomy has now been introduced in VetBact, but it will still be possible to search for the alternative species names. Read more about the revised taxonomy of the mollicutes under the Term list of VetBact and see also reference 164 below. | ||||||||||
| Reference(s): | No. 164, 168 | ||||||||||
| Updated: | 2023-03-15 |