Oligella Rossau et al. 1987
General information
Description and emendation
Gram-negative, noncapsulated, nonsporeforming small rods, mostly not exceeding 1 μm and often occurring in pairs; they lack the typical plumpness of moraxellae. Mostly nonmotile but some strains of O. ureolytica are peritrichously flagellated. They are moderately fastidious, aerobic chemoorganotrophs growing on nutrient agar, but growth is enhanced by the addition of, e.g., yeast autolysate, serum, or blood. Colonies on blood agar develop rather slowly and are more overtly white than those of all recognized species of Moraxella. No pigments and no odor are produced. Nonhemolytic. Biochemically they are rather inert, and only a few organic acids and amino acids are utilized as the sole carbon source. Carbohydrates are neither fermented nor oxidized. Oxidase positive and usually catalase positive. Indole and hydrogen sulfide are not formed, and gelatin is not hydrolyzed. The major cellular fatty acids are cis-vaccenic acid (C18:1) and palmitic acid (C16:0). Two 3-hydroxylated acids (3-OH C14:0 and 3-OH C16:0) are present, whereas branched-chain acids are absent. Farameters of DNA-rRNA hybrids reveal that Oligella is related at the suprageneric level to Taylorella, Bordetella, and Alcaligenes. Mainly isolated from the genitourinary tract of humans. Their pathogenicity is unknown but most probably low. The G+C content of DNA is 47±1 mol% (Tm).
Subdivision(s)
MID | Name | Rank | Taxon ID |
---|---|---|---|
M022503010115002 | Oligella ureolytica | Species | 90244 |
M022503010115001 | Oligella urethralis | Species | 90245 |