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Swedish University of Agricultural Sciences

Veterinary bacteriology: information about important bacteria
Veterinary bacteriology
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Species/Subspecies: Klebsiella oxytoca
Etymology: Genus name: named after the German bacteriologist Edwin Klebs (1834-1913). Species epithet: acid-producing.
Significance:Has a certain importance in food hygiene
  [Of minor importance]   
Taxonomy:
Phylum
Proteobacteria
Class
Gammaproteobacteria
Order
Enterobacteriales
Family
Enterobacteriaceae 
Genus
Klebsiella
Type Strain: ATCC 13182= CCUG 15717
Macromorphology (smell):
Klebsiella oxytoca  Klebsiella oxytoca  Klebsiella oxytoca  
Klebsiella oxytoca  
Form medium sized, dome shaped, white and glistening colonies (2-3 mm i diameter). Ger ej hemolys på blodagar.
Micromorphology: Nonmotile rods (0.3-1.0 x 0.6-6.0 µm), which appear singly, in pairs or in short chains.
Gram +/Gram -:
Klebsiella oxytoca  
G-
Metabolism: Facultatively anaerobic
Catalase/Oxidase:+/-
Other Enzymes: DNase -, esculinase +, tryptophanase + (= indole +), urease +.
Biochemical Tests: Citrate +, hydrogene sulfide -, methyl red (-), ornithine decarboxylase -, Voges-Proskauer +
Fermentation of carbohydrates:
D-glucoselactosemaltoseL-rhamnosesucrose
+++++
L-arabinosecellobioseD-mannitolsalicintrehalose
+++++
glycerolinulinraffinoseD-sorbitolstarch
+?++?
Form gas under fermentation of glucose. Other carbohydrates: erythritol -.
Spec. Char.:
Hosts: Is an opportunist, which may be found in the intestinal tract of animals and humans.
Disease (Swedish):Reservoir: Diarré, bakteremi och mastit hos nötkreatur.
Disease (English):Diarrhea, bacteremia and mastitis in cattle.
Clinical Picture:
Virulence Factors: A low molecular weight cytotoxin, which is called tilivalline.
16S rRNA Seq.:
Acc-noStrainNumber of NTOperon
EU231629 TCCC 11019 1 532  

Taxonomy/phylogeny:
Klebsiella oxytoca  
Nine species have been described within genus Klebsiella. K. oxytoca belongs to the family Enterobacteriaceae and is closely related to members of the genus Citrobacter. In fact, members of the genus Klebsiella and Citrobacter freundii form a monophyletic cluster (see Fig. 156:6 to the left).
Updated:2018-02-01

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