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Swedish University of Agricultural Sciences

Veterinary bacteriology: information about important bacteria
Veterinary bacteriology


Species/Subspecies: Mycobacterium ulcerans
Category: Primarily of interest in human medicin
Etymology: Genus name: small fungus-like rod.
Species epithet: cause ulceration
Significance:  [Of minor importance]   
Taxonomy:
Phylum
Actinobacteria
Class
Actinobacteria
Order
Corynebacteriales
Family
Mycobacteriaceae 
Genus
Mycobacterium
Type Strain: ATCC 19423 =NTCC 10417
Macromorphology (smell):
Micromorphology: Acid-fast rods
Gram +/Gram -:G+ (but difficult to gram stain)
Catalase/Oxidase:
Spec. Char.: M. ulcerans is a slow grower (it takes more than 7 days to see colonies with the naked eye).
Disease:Ulcerative skin infections.
Hosts: Humans
Clinical Picture: Ulcerative skin infections.
Virulence Factors: Forms an extrcellular heat-labile toxin.
16S rRNA Seq.:
Acc-noStrainNumber of NTOperon
X88926 Borstel 10564/70 1457  

Taxonomy/phylogeny:
 
About 175 species have been described within genus Mycobacterium and this genus is closely related to Rhodococcus, Nocardia and Corynebacterium. M. ulcerans is very closely related to M. marinum.
Updated:2020-11-05

News

New names of taxa within the classification category phylum

During October 2021, an article was published by A. Oren och G.M. Garrity, in which new names are proposed for a number of taxa within the classification category phylum. This has resulted in many discussions in social media about whether it was really necessary to make these changes, which have created confusion among microbiologists and other professionals who come into contact with bacteriology.

Published 2022-09-28. Read more...

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