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Veterinary bacteriology: information about important bacteria
Veterinary bacteriology

Species/Subspecies: Mycoplasmopsis synoviae
Etymology: Genus name: fungus shaped.
Species epithet: of joint fluid.
Significance:Worldwide distribution.
Alternative Species Name(s):Mycoplasma synoviae
Type Strain: WVU 1853 = ATCC 25204 = NCTC 10124.
Macromorphology (smell): Forms small colonies where some are very typical umbonated ("fried egg appearance") and some lack the "yolk". The macro morphology can be observed in a microscope.
Micromorphology: Very small and pleomorphic. Nonmotile.
Gram +/Gram -:G-, but is normally not gram stained because the cells will then be fragmented.
Fermentation of carbohydrates: Glucose +
Spec. Char.: Lacks a cell wall. Optimal growth temperature: 37°C.
HostsDiseaseClinical picture
Chicken and turkeyInfectious synovitis (avian mycoplasmosis or infectious sinusitis)Subclinical or mild respiratory symptoms. Lame and stiff gait. Decreased egg production and eggshell apex abnormalities (EAA).
Genome Sequence:
Acc-noStrainSize (bp)Genome
 53 0 799 476 1c + 1c 

16S rRNA Seq.:
Acc-noStrainNumber of NTOperon
X52083 WVU 1853T 1538 

Mycoplasmopsis is the largest genus among mollicutes of veterinary importance and about 55 species have been described so far within this genus. M. synoviae is related to M. cynos och M. felis. See the phylogenetic tree (Fig. 214:1) where M can mean Mycoplasma, Mesomycoplasma, Metamycoplasma, Mycoplasmoides or Mycoplasmopsis.
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


New names of bacterial phyla

The taxonomic category phylum was previously not regulated by the International Code of Nomenclature of Prokaryotes (ICNP), but now this has changed and it was decided to revise the names of bacterial phyla. All phyla must be written in italics (which has been done on VetBact also before) and have the ending -ota.

Published 2023-03-01. Read more...
The taxonomy of chlamydias

Species within the family Chlamydiaceae were previously divided into two genera Chlamydia and Chlamydophila. However, the differences between these two genera were not that great and many research groups have not accepted this division. Therefore, the genus Chlamydophila has been returned to the genus Chlamydia and this change has now been incorporated in VetBact

Published 2023-03-15. Read more...

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