VetBact
VetBact logo

VetBact

Swedish University of Agricultural Sciences

Veterinary bacteriology: information about important bacteria
Veterinary bacteriology


Species/Subspecies: Mycoplasma hyopneumoniae
Etymology: Genus name: fungus shaped.
Species epithet: from pneumonia of a pig.
Significance:  [Very important]   
Taxonomy:
Phylum
Tenericutes
Class
Mollicutes
Order
Mycoplasmatales
Family
Mycoplasmataceae 
Genus
Mycoplasma
Type Strain: J = ATCC 25934 = NCTC 10110.
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: Non-motile, very small small and pleomorphic
Gram +/Gram -:G-, but is normally not gram stained because the cells will then be fragmented.
Metabolism: Facultatively anaerobic. M. hyopneumoniae is a glucose fermenter, which lowers the pH in the growth medium.
Catalase/Oxidase:
Spec. Char.: Lacks a cell wall.
Disease:Porcine enzootic pneumonia or enzootic pneumonia in pigs (EPP) or swine enzootic pneumonia (SEP).
Hosts: Pig
Clinical Picture: Coughing, poor growth rate and sometimes respiratory distress.
Genome Sequence:
Acc-noStrainSize (bp)Genome
NC_007295 0 897 405 1c + 0 

16S rRNA Seq.:
Acc-noStrainNumber of NTOperon
AE017243 JT 1 537 

Taxonomy/phylogeny:
 
About 125 species have been described within the genus M. hyopneumoniae is closely related to M. flocculare, M. ovipneumoniae as well as M. dispar and belongs to the M. neurolyticum cluster within the hominis group.
Comment:Note that the mycoplasmas have recently been transferred to a new phylum, Tenericutes.
Reference(s): No. 52
Updated:2021-09-16

Recently Updated

Recent blog posts


Swedish University of Agricultural Sciences