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Veterinary bacteriology: information about important bacteria
Veterinary bacteriology


Species/Subspecies: Mycoplasma hyorhinis
Etymology: Genus name: fungus shaped.
Species epithet: from the pig nose.
Significance:Worldwide distribution.
  [Important]   
Taxonomy:
Phylum
Tenericutes
Class
Mollicutes
Order
Mycoplasmatales
Family
Mycoplasmataceae 
Genus
Mycoplasma
Type Strain: BTS7 = ATCC 17981 = NCTC 10130.
Macromorphology (smell):
 
Forms small and atypical colonies, which lack a clearly defined nipple (no "fried egg appearance") and should be observed in a microscope.
Micromorphology: Very small and pleomorphic.
Gram +/Gram -:G-, but is normally not gram stained since the cells are fragile and fragmented by this staining method.
Catalase/Oxidase:
Fermentation of carbohydrates: Glucose +
Spec. Char.: Optimal growth temperature: 37°C.
Disease:Arthritis and polyserositis in pigs from 3 up to 10 weeks of age.
Hosts: Pigs
Clinical Picture: Fever, difficulty in breathing, paralysis and swollen joints.
Genome Sequence:
Acc-noStrainSize (bp)Genome
CP002669 MCLD 0 829 709 1c + 0 
Three strains have been sequenced, plasmids have not been found.

16S rRNA Seq.:
Acc-noStrainNumber of NTOperon
AF412982 BTS7T 1468 

Taxonomy/phylogeny:
 
About 125 species have been described within the genus Mycoplasma. M. hyorhinis is closely related to M. dispar, M. ovipneumoniae, M. hyopneumoniae as well as M. flocculare and belongs to the M. neurolyticum cluster within the hominis group.
Comment:Often found as a contaminant of cell cultures.
Updated:2021-10-07

News

"Dear child has many names" (call it what you will...)

For a long time, Rhodococcus hoagii was refer­red to Rhodo­coccus equi on VetBact, because we experienced some resistance to the name that is now considered to be the correct one, i.e. Rhodococcus hoagii. Now you can find the bacterium in question under the correct name in VetBact, but you can also find the bacterium when searching for the old name. 

Published 2021-10-10. Read more...

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