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Swedish University of Agricultural Sciences

Veterinary bacteriology: information about important bacteria
Veterinary bacteriology


Species/Subspecies: Mycoplasma suis
Etymology: Genus name: fungus shaped.
Species epithet: of pig.
Significance:  [Important]   
Old Species Name(s):Eperythrozoon suis (rickettsia)
Taxonomy:
Phylum
Tenericutes
Class
Mollicutes
Order
Mycoplasmatales
Family
Mycoplasmataceae 
Genus
Mycoplasma
Type Strain: Finns ej definierad.
Macromorphology (smell): Cannot be cultivated on artificial media.
Micromorphology: Very small and pleomorphic
Gram +/Gram -:G-, but is normally not gram stained because the cells will then be fragmented.
Catalase/Oxidase:
Spec. Char.: Lacks a cell wall.
Disease:Anemia
Hosts: Pig
Clinical Picture:
Genome Sequence:
Acc-noStrainSize (bp)Genome
CP002525 Illinois 0 742 431 1c + 0 
Two strains have been sequenced and plasmids have not been found.

16S rRNA Seq.:
Acc-noStrainNumber of NTOperon
AY492086 Guangdong 1 468 

Taxonomy/phylogeny:
 
About 125 species have been described within the genus Mycoplasma. M. suis belongs to the hemotropic mycoplasmas and they form a phylogenetic cluster of their own. However, they are distantly related to mycoplasmas within the M. pneumoniae cluster and the Ureaplasma cluster. They are, therefore, included in the phylogenetic pneumoniae group. See phylogenetic tree (Fig. 41:1). It was believed for a long time that the hemotropic mycoplasmas were rickettsias, but by phylogenetic methods among others, it has been proved that they really are mycoplasmas.
Comment:Colonizes the surface of erythrocytes. Note that the mycoplasmas have recently been transferred to a new phylum, Tenericutes.
Updated:2016-01-27

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