| Lactobacillus (Secundilactobacillus) similis |
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Bacillota (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.
(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.
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.
disc-shaped. Facultatively anaerobic. Can grow at 15 ºC, variable at 45 ºC.
Isolated from fermented cane molasses at alcohol plants in Thailand.
Undetermined.
- Kitahara M., Sakamoto M. and Benno Y., 2010. Lactobacillus similis sp. nov., isolated from fermented cane molasses. IJSEM 60,
187-190. - 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. - 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. - 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.
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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