Phylum Firmicutes, Class Bacilli, Order Lactobacillales, Family Lactobacillaceae, Genus Lactobacillus, Lactobacillus uli Olsen,
Johnson, Moore and Moore, 1991.
Homotypic synonyms: Olsenella uli (Olsen et al. 1991) Dewhirst et al. 2001, oral strains of Lactobacillus minutus (Hauduroy et al.
1937) Moore and Holdeman 1972 or Lactobacillus D01.
Gram-positive small, elliptical (central swellings may occur), rods, occurring singly, in
pairs and in short chains. Non-motile. Non-spore-forming.
Colonies are raised or low convex, gray, translucent to transparent, 1-2 mm in
diameter after 5 days of anaerobic incubation at 37 ºC on BH blood agar. Growth is
stimulated by 0.02% Tween 80 and may be stimulated by 10% rabbit serum. Variable
growth at 45 ºC. Optimum growth at 37 ºC. No growth in 6.5% NaCl. Strict anaerobic.
Isolated from human gingival crevices, especially in patients with periodontitis.
Undetermined. Isolated from patients with periodontitis.
- Olsen I, Johnson JL, Moore LVH and Moore WEC, 1991. Lactobacillus uli sp. nov. and Lactobacillus rimae sp. nov. from the
human gingival crevice and emended descriptions of Lactobacillus minutus and Streptococcus parvulus. Int J Syst Bacteriol 41,
- Dewhirst FE, Paster BJ, Tzellas N, Coleman B, Downes J, Spratt DA and Wade WG, 2001. Characterization of novel human oral
isolates and cloned 16S rDNA sequences that fall in the family Coriobacteriaceae: description of Olsenella gen. nov.,
reclassification of Lactobacillus uli as Olsenella uli comb. nov. and description of Olsenella profusa sp. nov.. Int J Syst Evol
Microbiol 51, 1797-1804.
Rapid ID 32A profile is 2012033705.
Positive results for arginine hydrolysis, fermentation of fructose, glucose, glycogen, maltose, mannose, and sucrose.
Negative results for catalase, gelatin liquefaction, hippurate hydrolysis, indole production, nitrate reduction, urease, fermentation of
amygdalin, arabinose, erythritol, esculin, glycerol, inositol, mannitol, melezitose, melibiose, raffinose, rhamnose, and ribose.
Variable results for ammonia produced from arginine, esculin hydrolysis, fermentation of cellobiose, inulin, lactose, salicin, sorbitol,
trehalose, and xylose.
(c) Costin Stoica