Lactobacillus diolivorans
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Firmicutes, Class Bacilli, Order Lactobacillales, Family Lactobacillaceae, Genus Lactobacillus [Group C lactobacilli (obligately
heterofermentative),  unique phylogenetic group],
Lactobacillus diolivorans Krooneman, Alderkamp, OudeElferink, Driehuis,
Cleenwerck, Swings, Gottschal and Vancanneyt 2002.
Gram-positive, nonmotile rods that occur as single cells, in pairs, or occasionally in
short chains. On MRS-MOD medium with 1.2-propanediol as substrate, cells are 1
μm x 2 μm whereas, on glucose, the cells are longer, up to 10 μm. Nonspore-
forming.
Colonies are off-white on MRS medium. Facultatively anaerobic. Can grow in 0-2%
NaCl, but not in 4% NaCl medium. Optimum growth temperature 30-32 ºC. Can grow
at 15 ºC, but not at 12, 42, or 45 ºC. Grow at pH 4.0-7.0.
Isolated from maize silage in the Netherlands. It may play an important role in stabilizing maize silages.
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. Krooneman J., Faber F., Alderkamp A.C., Oude Elferink S.J.H.W., Driehuis F., Cleenwerck I., Swings J., Gottschal J.C. and
    Vancanneyt M., 2002. Lactobacillus diolivorans sp. nov., a 1,2-propanediol-degrading bacterium isolated from aerobically stable
    maize silage. IJSEM 52, 639-646.
Obligately heterofermentative (hexoses are fermented to lactic acid, acetic acid (ethanol), and CO2 via the phosphogluconate pathway;
pentoses are  fermented to lactic acid and acetic acid by the related pentose phosphate pathaway). Fermentative growth on
1,2-propanediol under anoxic conditions, producing propanol and propionic acid.

Positive results for fermentation of: D-arabitol, L-arabinose, fructose, galactose, D-Glucose, gluconate, 5-ketogluconate, maltose,
melibiose, methyl alpha-D-glucoside, methyl beta-xyloside, ribose, and D-xylose.

Negative results for catalase, fermentation of: adonitol, amygdalin, L-arabitol, arbutin, D-arabinose, cellobiose, dulcitol, erythritol,  
esculin, fucose, glycerol, glycogen, inositol, inulin, 2-ketogluconate, lactose, mannitol, mannose, melezitose, N-acetylglucosamine,
rhamnose, salicin, sorbitol, sorbose, starch, sucrose, trehalose, and L-xylose.

Variable and weak results for raffinose fermentation.
(c) Costin Stoica
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