Genus Trabulsiella
Taxonomy
Morphology
Growth conditions
Biochemical characters
Ecology
Pathogenicity
References
Proteobacteria => Gammaproteobacteria => Enterobacteriales => Enterobacteriaceae => Trabulsiella => Trabulsiella guamensis -
type species of the genus, McWhorter et al. 1992.
Gram negative rods. Non-motile.
Facultatively anaerobic, optimum growth temperature 28°C (range -2 => 45°C).
Grow very slowly at 4°C (1-3 weeks).
Nutrient Agar or Nutrient Broth
Trypticase Soy Agar ± 5% sheep blood
Isolated from soil & some clinical samples.
Unknown pathogenicity. Possible cause of diarrhea.
  1. Bergey’s Manual of Determinative Bacteriology, 9th ed., 1994;
  2. McWhorter A.C., Haddock R.L., Nocon F.A., Steigerwalt A.G., Brenner D.J., Aleksic S., Bockemuhl J. & Farmer III (J.J.):
    Trabulsiella guamensis, a new genus and species of the family Enterobacteriaceae that subgroups 4 and 5. J. Clin.
    Microbiol., 1991, 29, 1480-1485.
Biochemically resembles Salmonella (H2S positive, lactose & sacharose negative).
See table at the end.
(c) Costin Stoica

 

Pigment

Catalase

Oxidase

Lactose

ONPG

Arginine dihydrolase

Lysine decarboxylase

Trabulsiella guamensis

-

+

-

-

+

=

+

 

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 (Jordans)

Esculin hydrolysis

Acetate utilization

Deoxyribonuclease

Lipase

Mehyl red

D-Adonitol

+

+

=

=

+

-

-

+

-
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