Lactobacillus oris
Taxonomy
Morphology
Cultural characteristics
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Phylum Firmicutes, Class Bacilli, Order Lactobacillales, Family Lactobacillaceae, Genus Lactobacillus, [Group C lactobacilli
(obligately heterofermentative),
Lactobacillus reuteri - phylogenetic group], Lactobacillus oris  Farrow and Collins, 1988.
Gram-positive rods, 0.8-1.0 x 2-4 µm, occurring singly, in pairs or in short chains.
Nonmotile.
Colonies are small, raised and rough. Grow at 30 and 40 ºC, not at 15, 22 or 48 ºC.
Variable growt at 45 ºC. Can grow in NaCl 4%. Facultatively anaerobic.
Isolated from human saliva.
Undetermined.
  1. Hammes W.P. and Hertel C., 2009. Genus I. Lactobacillus Beijerinck 1901. In: (Eds.) P.D. Vos, G. Garrity, D. Jones, N.R. Krieg, W.
    Ludwig, F.A. Rainey, K.-H. Schleifer, W.B. Whitman. Bergey’s Manual of Systematic Bacteriology, Volume 3: The Firmicutes,
    Springer, 465-511.
  2. Farrow J.A.E. and Collins M.D., 1988. Lactobacillus oris sp. nov. from the Human Oral Cavity. IJSB Vol. 38, No.1, 116-118.
Heterofermentative.

Positive results for fermentation of: amygdalin, L-arabinose, D-arabitol, D-fructose, galactose, beta-gentiobiose, glucose (acid and
gas production), lactose, maltose, melibiose, raffinose, ribose, sucrose, and D-xylose.

Negative results for arginine hydrolysis, catalase, H
2S production, nitrate reduction, fermentation of: adonitol, D-arabinose, L-arabitol,
dulcitol, erythritol, D,L-fucose, glycerol, glycogen, inositol, 2- or 5-ketogluconate, D-lyxose, mannitol, melezitose, rhamnose, sorbitol,
sorbose, starch, tagatose, L-xylose, and xylitol.

Variable results for esculin hydrolysis, hippurate hydrolysis, urease, fermentation of: N-acetylglucosamine, arbutin, cellobiose,
esculin, gluconate, inulin, mannose, salicin, trehalose, and  turanose.
(c) Costin Stoica
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