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Swedish University of Agricultural Sciences

Veterinary bacteriology: information about important bacteria
Veterinary bacteriology


Species/Subspecies: Corynebacterium ulcerans
Categories: Zoonotic; causes hemolysis
Etymology: Genus name: club-shaped bakterium (bacterium means small rod).
Species epithet: causing sore.
Significance:  [Of minor importance]   
Taxonomy:
Phylum
Actinomycetota
Class
Actinomycetia
Order
Mycobacteriales
Family
Corynebacteriaceae 
Genus
Corynebacterium
Type Strain: ATCC 51799 = CCUG 2708 = NCTC 7910.
Macromorphology (smell):
Micromorphology: Non-motile pleomorphic and coccoid rods.
Gram +/Gram -:G+
Metabolism: Aerobic
Catalase/Oxidase:+/-
Other Enzymes: Esculinase -, hippuricase +, urease +.
Biochemical Tests: Methyl red +.
Fermentation of carbohydrates:
D-glucose
+
lactose
-
maltose
+
L-rhamnose
?
sucrose
-
L-arabinose
?
cellobiose
?
D-mannitol
v
salicin
?
trehalose
-
glycerol
?
inulin
?
raffinose
?
D-sorbitol
?
starch
?
Fructose +, mannose ?, xylose -.
Spec. Char.:
Special Media:
Disease:Bovine mastitis.
Abscesses (gangrenous dermatitis) in rodents.
Human pharyngitis.
Hosts: Cattle, rodents, humans
Clinical Picture:
Virulence Factors: Some strains of C. ulcerans are able to produce difteria toxin (see Corynebacterium diphtheria).
Genome Sequence:
Acc-noStrainSize (bp)Genome
AE015925.1 809 2 502 095 1c + 0 

16S rRNA Seq.:
Acc-noStrainNumber of NTOperon
X84256 NCTC 7910T 1490 

Taxonomy/phylogeny:
Corynebacterium ulcerans  
176 species and 13 subspecies are described within the genus Corynebacterium. However, not all names have been approved yet and some species have been affiliated to another genus. The genus Corynebacterium is closely related to the genera Mycobacterium, Nocardia, Rhodococcus and Crossiella.
Comment:C. ulcerans may cause zoonosis.
Updated:2023-03-02

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