|Categories:||Motile; notifiable diseases and bacteria|
|Etymology:||Genus name: similar to mycoplasma (fungus shaped).|
Species epithet: chicken poisoning (infecting).
|Alternative Species Name(s):||Mycoplasma gallisepticum|
|Type Strain:||PG31 = ATCC 19610 = NCTC 10115.|
||Forms small very typical umbonated colonies ("fried egg appearance"). The macro morphology can be observed in a microscope.|
|Micromorphology:||Very small and flask-shaped. M. gallisepticum has gliding motility on surfaces.|
|Gram +/Gram -:||G-, but is normally not gram stained because the cells will then be fragmented.|
|Metabolism:||Facultatively anaerobic. Glucose fermenter.|
|Fermentation of carbohydrates:||Glucose +|
|Spec. Char.:||Lacks a cell wall.|
|Disease:||Avian mycoplasmosis (Chronic respiratory disease in chickens and infectious sinusitis in turkey).
|Diagnostics:||Cultivation and immunofluorescens, PCR.|
|16S rRNA Seq.:|
||About 10 species have been described within the genus Mycoplasmoides. M. gallisepticum is rather closely related to M. pneumoniae. See the phylogenetic tree (Fig. 36:2) where M can mean Mycoplasma, Mesomycoplasma, Metamycoplasma, Mycoplasmoides or Mycoplasmopsis.|
|Legislation:||Avian mycoplasmosis caused by M. gallisepticum is included in OIE's B-list of major animal diseases. The disease is notifyable in Sweden|
|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. 29, 164|
|New families introduced within the order Enterobacterales|
The order Enterobacterales (formerly called Enterobacteriales) previously consisted of bacteria with different properties and phylogenetically, these bacteria were far apart. In order for the taxonomy to be more in line with phylogeny, some of these bacteria have, therefore, been sorted into 6 new families.Published 2022-04-13. Read more...