(c) Costin Stoica
Phylum Proteobacteria, Class Betaproteobacteria, Order Burkholderiales, Family Alcaligenaceae, Genus Oligella, Oligella ureolytica
Rossau et al. 1987. Included in CDC group IVe.
Gram-negative small rods, mostly not exceeding 1 μm and often occurring in pairs;
they lack the typical plumpness of moraxellae. Nonspore-forming. Noncapsulated.
Some strains are motile by means of long peritrichous flagella.
Colonies on blood agar develop slowly and are more overtly white than those of all
recognized species of Moraxella. No pigments and no odor are produced.
Aerobe. Grows at 30-37 ºC, but not at 42 ºC. Grows on p-hydroxybenzoate as a carbon
source. Grows in the presence of up to 3% NaCl, and on Drigalski agar.
Isolated from human urine. Usually resistant to penicillin.
- R. Rossau, K. Kersters, E. Falsen, E. Jantzen, P. Segers, A. Union, L. Nehls, and J. De Ley. Oligella, a New Genus Including
Oligella urethralis comb. nov. (Formerly Moraxella urethralis) and Oligella ureolytica sp. nov. (Formerly CDC Group IVe):
Relationship to Taylorella equigenitalis and Related Taxa. Int J Syst Bacteriol July 1987 37:198-210.
Positive results for catalase, nitrate reduction, oxidase, urease (Christensen's medium), utilization of: acetate, succinate, fumarate,
DL-lactate, DL-3-hydroxybutyrate, L-malate, pyruvate, 2-ketoglutarate, benzoate & L-glutamate.
Negative results for gelatin hydrolysis, H2S production, indole production, acetamide hydrolysis, DN-ase, esculin hydrolysis, starch
hydrolysis, Tween 80 hydrolysis; lysine decarboxylase, ornithine decarboxylase, arginine dihydrolase, acid phosphatase, utilization
of: N-acetyl-glucosamhe, amygdalin, D- or L-arabinose, arbutin, cellobiose, esculin, D-fructose, D-fucose, L-fucose, D-galactose,
gentiobiose, D-gluconate, D-glucosamine, D-glucose, glycogen, inulin, 2-ketogluconate, 5-ketogluconate, lactose, alpha-lyxose,
maltose, D-mannose, melezitose, melibiose, methyl-alpha-D-glucoside, methyl-alpha-D-mannoside, methyl-beta-D-xyloside,
raffinose, L-rhamnose, D-ribose, salicin, L-sorbose, starch, sucrose, D-tagatose, trehalose, turanose, D- or L-xylose, adonitol, D- or
L-arabitol; dulcitol, meso-erythritol, glycerol, meso-inositol, D-mannitol, sorbitol, meso-xylitol, caprate, caprylate, heptanoate,
pelargonate, maleate, malonate, oxalate, glycolate, adipate, azelate, pimelate, sebacate, suberate, DL-glycerate, D-tartrate &
meso-tartrate. Carbohydrates are neither fermented nor oxidized.