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Swedish University of Agricultural Sciences

Veterinary bacteriology: information about important bacteria
Veterinary bacteriology


Species/Subspecies: Acholeplasma laidlawii
Etymology: Genus name: suggests lack of a requirement for cholesterol.
Species epithet: named after the Brittish virologist Patrick Laidlaw (1881-1940), who first isolated this organism.
Significance:Of no direct importance for veterinary medicine
  [Of minor importance]   
Taxonomy:
Phylum
Tenericutes
Class
Mollicutes
Order
Acholeplasmatales
Family
Acholeplasmataceae 
Genus
Acholeplasma
Type Strain: PG-8 = ATCC 23206 = NCTC 10116
Macromorphology (smell):
 
Small colonies (0.2-2 mm), with a shape resembling a fried egg
Micromorphology: Small, pleomorphic and nonmotile organisms (0.2-0.5 µm in diameter).
Gram +/Gram -:G-, but is normally not gram stained since the cells are fragile and fragmented by this staining method.
Metabolism: Facultatively anaerobic
Catalase/Oxidase:?/-
Other Enzymes: Arginine -, urease -
Fermentation of carbohydrates: Glucose +
Spec. Char.: Lacks a cell wall. Temperature optimum: 37°C, but grows at 20-41°C
Disease:Probably non-pathogenic
Hosts: Has been isolated from manure, soil, plants, insects and many different mammalian species
Clinical Picture:
Genome Sequence:
Acc-noStrainSize (bp)Genome
NC_010163 PG-8A 1 496 992 1c + 0 

16S rRNA Seq.:
Acc-noStrainNumber of NTOperon
U14905 PG8 1 476 

Taxonomy/phylogeny:
 
About 15 species have been described within the genus Acholeplasma. This genus is closely related to a group of plant pathogens, which used to be called phytoplasmas. It has not been possible to cultivate these bacteria and this genus should, therefore, be called: "Candidatus Phytoplasma".
Comment:Sometimes a contaminant of cell cultures
Updated:2016-01-28

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