Colonies are gray and nonhaemolytic on blood agar. Growth occurs at 15-45 ºC,
optimally at 30–37 ºC. Can grow in pH 5.5-9.0. Can grow in 1.0 % (w/v) NaCl but not in
3% NaCl. Aerobic. Anaerobic growth occurs in the presence of nitrate. Can grow on
EMB agar, but not on MacConkey agar.
Phylum Proteobacteria, Class Betaproteobacteria, Order Neisseriales, Family Chromobacteriaceae, Genus Gulbenkiania,
Gulbenkiania mobilis Vaz-Moreira et al. 2007, type species of the genus.
Gram-negative, curved rods, 0.4 / 1 μm. Motile by means of a single polar flagellum.
Spores are not formed. Capsule is not present.
Isolated from treated municipal wastewater.
Susceptible to amoxicillin (25 μg), gentamicin (10 μg), ciprofloxacin (5 μg), tetracycline (30 μg), sulfamethoxazole + trimethoprim;
23.75/1.25 μg), sulfamethoxazole (25 μg), cephalothin (30 μg), streptomycin (10 μg), ticarcillin (75 μg), ceftazidime (30 μg),
meropenem (10 μg) and colistin sulphate (50 μg).
- Vaz-Moreira I., Nobre M.F., Nunes O.C. and Manaia C.M.: Gulbenkiania mobilis gen. nov., sp. nov., isolated from treated municipal
wastewater. Int. J. Syst. Evol. Microbiol., 2007, 57, 1108-1112.
- Euzeby (J.P.): List of Bacterial Names with Standing in Nomenclature: a folder available on the Internet. Int. J. Syst. Bacteriol.,
1997, 47, 590-592. (List of Prokaryotic names with Standing in Nomenclature. http://www.bacterio.net).
Positive results for arginine dihydrolase, catalase, indole production, nitrate reduction
& oxidase. Can assimilate L-Leucine.
Negative results for amylase, esculin hydrolysis, beta-galactosidase, gelatin hydrolysis, H2S production, lysine decarboxylase,
ornithine decarboxylase, Tween 80 hydrolysis, urease, Voges–Proskauer reaction, acid production from amygdalin, L-arabinose, D-
glucose, D-mannitol, inositol, D-sorbitol, L-rhamnose, sucrose, D-melibiose, and all other API 50CH substrates.
No assimilation of glycerol, erythritol, D- and L-arabinose, D-ribose, D- and L-xylose, D-adonitol, methyl beta-D-xylopyranoside, D-
galactose, D-fructose, L-sorbose, L-rhamnose, dulcitol, inositol, D-mannitol, D-sorbitol, methyl alpha-D-mannopyranoside, methyl
alpha-D-glucopyranoside, amygdalin, arbutin, aesculin, salicin, D-cellobiose, D-maltose, D-lactose, D-melibiose, sucrose, D-
trehalose, inulin, D-melezitose, D-raffinose, starch, glycogen, xylitol, beta-gentiobiose, D-turanose, D-lyxose, D-tagatose, D- and L-
fucose, D- and L-arabitol, 2-ketogluconate, 5-ketogluconate, adipate, phenylacetate, L-hydroxyproline, glycine, L-alanine, L-arginine,
gluconic acid, L-phenylalanine & citric acid.
(c) Costin Stoica