| Lactobacillus (Limosilactobacillus) equigenerosi |
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 reuteri-phylogenetic group], Lactobacillus equigenerosi Endo, Roos, Satoh, Morita and
Okada 2008.
Homotypic synonym: Limosilactobacillus equigenerosi (Endo et al. 2008) Zheng et al. 2020.
(obligately heterofermentative), Lactobacillus reuteri-phylogenetic group], Lactobacillus equigenerosi Endo, Roos, Satoh, Morita and
Okada 2008.
Homotypic synonym: Limosilactobacillus equigenerosi (Endo et al. 2008) Zheng et al. 2020.
Gram-positive, spherical or oval cocci (0.5-0.8 x 0.8-1.5 μm), occurring singly or in
pairs. Tetrad-like cells are uncommon. Nonmotile.
pairs. Tetrad-like cells are uncommon. Nonmotile.
Colonies are formed under anaerobic conditions only;colonies on MRS agar are
beige, smooth and 1-2 mm. Growth in broth is enhanced under anaerobic condition
in diameter after incubation for 2 days at 37 ºC. Facultatively anaerobic. Optimum
growth temperature 30-45 ºC. No growth at 20 or 50 ºC. Weak growth at 25 ºC. Can
grow at pH 4.0 but not at pH 3.5. Can grow in 2.5% NaCl media but not in 5% NaCl.
beige, smooth and 1-2 mm. Growth in broth is enhanced under anaerobic condition
in diameter after incubation for 2 days at 37 ºC. Facultatively anaerobic. Optimum
growth temperature 30-45 ºC. No growth at 20 or 50 ºC. Weak growth at 25 ºC. Can
grow at pH 4.0 but not at pH 3.5. Can grow in 2.5% NaCl media but not in 5% NaCl.
Isolated from faeces of thoroughbred racehorse, Japan.
Undetermined.
- Endo A., Roos S., Satoh E., Morita H. and Okada S., 2008. Lactobacillus equigenerosi sp. nov., a coccoid species isolated from
faeces of thoroughbred racehorses. IJSEM, 58, 914-918. - 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 fermentation of: fructose (weak), glucose (acid), maltose, melibiose, ribose (weak), sucrose, and xylose.
Negative results for catalase, nitrates reduction, fermentation of: cellobiose, mannitol, melezitose, rhamnose, salicin, sorbitol, starch,
and trehalose.
Variable results for fermentation of: arabinose, galactose, lactose, and raffinose.
Positive results for fermentation of: fructose (weak), glucose (acid), maltose, melibiose, ribose (weak), sucrose, and xylose.
Negative results for catalase, nitrates reduction, fermentation of: cellobiose, mannitol, melezitose, rhamnose, salicin, sorbitol, starch,
and trehalose.
Variable results for fermentation of: arabinose, galactose, lactose, and raffinose.
(c) Costin Stoica
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