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Taxonomy
Morphology
Growth conditions
Biochemical characters
Ecology
Pathogenicity
References
Proteobacteria => Gammaproteobacteria => Enterobacteriales => Enterobacteriaceae => Yokenella (Koserella) => Yokenella
regensburgei Kosako et al. 1985 (synonym: Koserella trabulsii Hickman-Brenner et al. 1985)
regensburgei Kosako et al. 1985 (synonym: Koserella trabulsii Hickman-Brenner et al. 1985)
Gram negative, rods.
Facultatively anaerobic, growth temperature 28-37 °C.
Nutrient Agar or Nutrient Broth
Trypticase Soy Agar ± 5% sheep blood
Nutrient Agar or Nutrient Broth
Trypticase Soy Agar ± 5% sheep blood
Isolated from water, human clinical specimens (stools, knee fluid, wounds), animals (sheep intestine) and insects.
Unknown pathogenicity. May be associated with bacteremia & wound infections.
- Bergey’s Manual of Determinative Bacteriology, 9th ed., 1994;
- Kosako Y., Sakazaki R. & Yoshizaki E.: Yokenella regensburgei gen. nov., sp. nov.: a new genus and species in the family
Enterobacteriaceae. Jpn. J. Med. Sci. Biol., 1984, 37, 117-124 (VALIDATION LIST N° 17. Int. J. Syst. Bacteriol., 1985, 35, 223-
225). - Kosako Y., Sakazaki R., Huntley-Carter G.P. & Farmer III J.J.: Yokenella regensburgei and Koserella trabulsii are subjective
synonyms. Int. J. Syst. Bacteriol., 1987, 37, 127-129 - Hickman-Brenner F.W., Huntley-Carter G.P., Richard G.: Koserella trabulsii, a new genus and species of Enterobacteriaceae
formerly known as Enteric Group 45. Journal of Clinical Bacteriology, Jan. 1985, p. 39-42.
Lactose negative, indole negative, motile.
See table at the end.
See table at the end.
|
|
Pigment |
Catalase |
Oxidase |
Lactose |
ONPG |
Arginine dihydrolase |
Lysine decarboxylase |
|
Yokenella
regensburgei (Koserella trabulsii) |
- |
+ |
- |
- |
+ |
- |
+ |
|
Ornithine decarboxylase |
Indole production |
Citrate utilization |
Hydrogen sulfide |
Urea hydrolysis |
Voges-Proskauer |
Phenilalanine |
Motility |
Gelatinase |
Growth on KCN media |
|
+ |
- |
- |
- |
- |
- |
- |
+ |
- |
+ |
|
Malonate |
Glucose |
Gas from glucose |
D-Mannitol |
Inositol |
D-Sorbitol |
L-Rhamnose |
Sucrose (Sacharose) |
Melibiose |
L-Arabinose |
|
- |
+ |
+ |
+ |
- |
- |
+ |
- |
+ |
+ |
|
Nitrate reduction |
Cellobiose |
Dulcitol |
Glycerol |
Maltose |
D-Mannose |
Alfa-Methyl-D-Glucoside |
Raffinose |
Salicin |
Trehalose |
|
+ |
+ |
- |
- |
+ |
+ |
- |
[-] |
- |
+ |
|
D-Xylose |
Mucate |
Tartrate ( |
Esculin hydrolysis |
Acetate utilization |
Deoxyribonuclease |
Lipase |
Mehyl red |
D-Adonitol |
|
+ |
- |
- |
= |
[-] |
- |
- |
+ |
- |
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