| Lactobacillus (Lentilactobacillus) rapi |
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Bacillota (Firmicutes), Class Bacilli, Order Lactobacillales, Family Lactobacillaceae, Genus Lactobacillus, [Group C
lactobacilli (obligately homofermentative)], Lactobacillus rapi Watanabe, Fujimoto, Tomii, Sasamoto, Makino, Kudo and Okada 2009.
Homotypic synonym: Lentilactobacillus rapi (Watanabe et al. 2009) Zheng et al. 2020.
lactobacilli (obligately homofermentative)], Lactobacillus rapi Watanabe, Fujimoto, Tomii, Sasamoto, Makino, Kudo and Okada 2009.
Homotypic synonym: Lentilactobacillus rapi (Watanabe et al. 2009) Zheng et al. 2020.
Gram-positive rods (0.6-1.0 x 0.8-3.0 μm) occurring singly, in pairs and in short chains.
Nonmotile. Non-spore-forming.
Nonmotile. Non-spore-forming.
After anaerobic growth at 30 ºC for 48 hours, colonies on MRS agar are beige, with a
smooth to rough surface, circular to slightly irregular and 2-3 mm in diameter.
Facultatively anaerobic. Can grow at 10 and 30 ºC, but not at 45 ºC. Range of pH
4.0-8.5. Can grow in 5% NaCl (variable), but not in 8% NaCl.
smooth to rough surface, circular to slightly irregular and 2-3 mm in diameter.
Facultatively anaerobic. Can grow at 10 and 30 ºC, but not at 45 ºC. Range of pH
4.0-8.5. Can grow in 5% NaCl (variable), but not in 8% NaCl.
Isolated from non-salted pickle solution used in producing sunki products, Japan.
Undetermined.
- Watanabe K., Fujimoto J., Tomii Y., Sasamoto M., Makino H., Kudo Y. and Okada S., 2009. Lactobacillus kisonensis sp. nov.,
Lactobacillus otakiensis sp. nov., Lactobacillus rapi sp. nov. and Lactobacillus sunkii sp. nov., heterofermentative species
isolated from sunki, a traditional Japanese pickle. IJSEM 59, 754-760. - 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. - Tohno M, Tanizawa Y, Kojima Y, Sakamoto M, Ohkuma M and Kobayashi H, 2021. Lentilactobacillus fungorum sp. nov., isolated
from spent mushroom substrates. Int J Syst Evol Microbiol 71; 005184. DOI: 10.1099/ijsem.0.005184. - Zhao Q, Yang S, Bao G, Wang W, Miao L, Wang S, Shen C and Li Y, 2022. Lentilactobacillus laojiaonis sp. nov., isolated from the
mud in a fermentation cellar for the production of Chinese liquor. Int J Syst Evol Microbiol 72; 005349. DOI: 10.1099/ijsem.
0.005349.
Positive results for acid phosphatase, arginine hydrolysis (NH3 from arginine), aesculin hydrolysis, gelatin hydrolysis,
beta-glucosidase, leucine aminopeptidase, naphthol-AS-BI-phosphohydrolase, trypsin (weak), valine aminopeptidase, fermentation
of: L-arabinose, esculin, fructose, D-glucose (with gas production), gluconate (weak), 5-ketogluconate (weak), maltose, melibiose,
melezitose, methyl alpha-D-glucoside, methyl beta-xyloside, raffinose, ribose, sucrose, turanose and D-xylose.
Negative results for catalase, alpha-fucosidase, nitrate reduction, fermentation of: adonitol, amygdalin, D-arabitol, L-arabitol, arbutin,
D-arabinose, cellobiose, dulcitol, erythritol, fucose, galactose, glycerol, glycogen, inositol, inulin, 2-ketogluconate, lactose, mannitol,
rhamnose, salicin, sorbitol, sorbose, starch, trehalose and L-xylose.
Variable results for alkaline phosphatase, cystine aminopeptidase, esterase (C4), esterase lipase (C8), fermentation of: mannose
and N-acetylglucosamine.
beta-glucosidase, leucine aminopeptidase, naphthol-AS-BI-phosphohydrolase, trypsin (weak), valine aminopeptidase, fermentation
of: L-arabinose, esculin, fructose, D-glucose (with gas production), gluconate (weak), 5-ketogluconate (weak), maltose, melibiose,
melezitose, methyl alpha-D-glucoside, methyl beta-xyloside, raffinose, ribose, sucrose, turanose and D-xylose.
Negative results for catalase, alpha-fucosidase, nitrate reduction, fermentation of: adonitol, amygdalin, D-arabitol, L-arabitol, arbutin,
D-arabinose, cellobiose, dulcitol, erythritol, fucose, galactose, glycerol, glycogen, inositol, inulin, 2-ketogluconate, lactose, mannitol,
rhamnose, salicin, sorbitol, sorbose, starch, trehalose and L-xylose.
Variable results for alkaline phosphatase, cystine aminopeptidase, esterase (C4), esterase lipase (C8), fermentation of: mannose
and N-acetylglucosamine.
(c) Costin Stoica
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