Lactobacillus similis
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Firmicutes, Class Bacilli, Order Lactobacillales, Family Lactobacillaceae, Genus Lactobacillus, [Group C lactobacilli
(obligately heterofermentative)],
Lactobacillus similis  Kitahara, Sakamoto and Benno 2010.

Homotypic synonym:  
Secundilactobacillus similis (Kitahara et al. 2010) Zheng et al. 2020
Gram-positive rods, 0.5  x 2-5 µm occurring singly or in short chains.
Nonspore-forming. Nonmotile.
On MRS agar, after 2 days at 37 ºC, the colonies are white, 1-2 mm in diameter, and
disc-shaped. Facultatively anaerobic. Can grow at 15 ºC, variable at 45 ºC.
Isolated from fermented cane molasses at alcohol plants in Thailand.
Undetermined.
  1. Kitahara M., Sakamoto M. and Benno Y., 2010. Lactobacillus similis sp. nov., isolated from fermented cane molasses. IJSEM 60,
    187-190.
  2. Tohno M, Kitahara M, Irisawa T, Inoue H, Uegaki R, Ohkuma M and Tajima K, 2013. Lactobacillus oryzae sp. nov., isolated from
    fermented rice grain (Oryza sativa L. subsp. japonica). Int J Syst Evol Microbiol 63, 2957-2962.
  3. Tohno M, Tanizawa Y, Irisawa T, Masuda T, Sakamoto M, Arita M, Ohkuma M and Kobayashi H, 2017. Lactobacillus silagincola sp.
    nov. and Lactobacillus pentosiphilus sp. nov., isolated from silage. Int J Syst Evol Microbiol 67, 3639-3644.
  4. Zheng J, Wittouck S, Salvetti E, Franz MAP et al., 2020. A taxonomic note on the genus Lactobacillus: Description of 23 novel
    genera, emended description of the genus Lactobacillus Beijerinck 1901, and union of Lactobacillaceae and Leuconostocaceae.
    Int J Syst Microbiol. 70, 2782-2858.
Obligately heterofermentative.

Positive results for alkaline phosphatase, cystine arylamidase, alpha- and beta-glucosidase, naphthol-AS-BI-phosphohydrolase,
fermentation of: N-acetylglucosamine, L-arabinose, galactose, glucose (acid and gas production), gluconate (acid production), alpha-
and beta-galactosidase, alpha- and beta-glucosidase, lactose, maltose, melibiose, methyl beta-D-xylopyranoside, methyl
alpha-D-glucopyranoside, methyl beta-D-xylopyranosideribose, and D-xylose.

Negative results for catalase, chymotrypsin, esculin hydrolysis, fermentation of: adonitol, amygdalin, D-arabitol, arbutin, D-arabinose,
cellobiose, dulcitol, erythritol, esculin, D-fructose, D,L-fucose, 2-ketogluconate, beta-gentiobiose, glycerol, glycogen, inositol, inulin,
lyxose, mannitol, mannose, melezitose, rhamnose, salicin, sorbitol, sorbose, starch, sucrose, tagatose, trehalose, turanose, L-xylose,
and xylitol.

Variable results for 5-ketogluconate, raffinose, and salicin fermentation.
(c) Costin Stoica
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