Differential characters of L. backii and L. iwatensis
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- Tohno M, Kitahara M, Irisawa T, Masuda T, Uegaki R, Ohkuma M and Tajima K, 2013. Description of Lactobacillus iwatensis sp.
nov. isolated from orchardgrass (Dactylis glomerata L.) silage, and Lactobacillus backii sp. nov. Int J Syst Evol Microbiol 63, 3854-
3860. - 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.
| Lactobacillus (Loigolactobacillus) backii |
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Bacillota (Firmicutes), Class Bacilli, Order Lactobacillales, Family Lactobacillaceae, Genus Lactobacillus, Lactobacillus
backii Tohno, Kitahara, Irisawa, Masuda, Uegaki, Ohkuma and Tajima 2013.
Homotypic synonym: Loigolactobacillus backii (Tohno et al. 2013) Zheng et al. 2020.
backii Tohno, Kitahara, Irisawa, Masuda, Uegaki, Ohkuma and Tajima 2013.
Homotypic synonym: Loigolactobacillus backii (Tohno et al. 2013) Zheng et al. 2020.
Gram-positive rods, 0.7 x 3.0 µm, occur singly or in pairs. Non-spore-forming.
Non-motile.
Non-motile.
Colonies on MRS agar are white, smooth, convex, 0.2-0.8 mm in diameter, after 72 h
at 30 ºC under anaerobic conditions. Facultative anaerobe. Grows at temperature
range 10-37 ºC (optimally at 30 ºC), pH range 3.5-8.0 and in 4.0-6.5% NaCl.
at 30 ºC under anaerobic conditions. Facultative anaerobe. Grows at temperature
range 10-37 ºC (optimally at 30 ºC), pH range 3.5-8.0 and in 4.0-6.5% NaCl.
Isolated from spoiled lager beer.
Undetermined.
Homofermentative.
Description is based mostly on API 50 CHL, API ZYM, API 20 Strep (bioMerieux) results.
Positive results for acid phosphatase, cystine arylamidase, beta-galactosidase, beta-glucosidase, N-acetyl-beta-glucosaminidase,
leucine arylamidase, valine arylamidase, acid production from arbutin, fructose, glucose (without gas production), mannitol,
mannose, sorbitol, salicin, and N-acetylglucosamine.
Negative results for alkaline phosphatase, arginine dihydrolase, catalase, esterase C4, esterase lipase, esculin hydrolysis,
alpha-fucosidase, alpha-glucosidase, alpha-galactosidase, beta-glucuronidase, lipase C14, alpha-mannosidase, trypsin,
alpha-chymotrypsin, acid production from adonitol, amygdalin, L- and D-arabinose, L- and D-arabitol, cellobiose, dulcitol, erythritol,
esculin, fucose, galactose, beta-gentiobiose, gluconate, methyl alpha-D-glucopyranoside, glycerol, glycogen, inositol, inulin, 2- and
5-ketogluconate, lactose, D-lyxose, maltose, melezitose, melibiose, raffinose, rhamnose, ribose, sorbose, starch, sucrose, tagatose,
trehalose, turanose, xylitol, and xylose.
Description is based mostly on API 50 CHL, API ZYM, API 20 Strep (bioMerieux) results.
Positive results for acid phosphatase, cystine arylamidase, beta-galactosidase, beta-glucosidase, N-acetyl-beta-glucosaminidase,
leucine arylamidase, valine arylamidase, acid production from arbutin, fructose, glucose (without gas production), mannitol,
mannose, sorbitol, salicin, and N-acetylglucosamine.
Negative results for alkaline phosphatase, arginine dihydrolase, catalase, esterase C4, esterase lipase, esculin hydrolysis,
alpha-fucosidase, alpha-glucosidase, alpha-galactosidase, beta-glucuronidase, lipase C14, alpha-mannosidase, trypsin,
alpha-chymotrypsin, acid production from adonitol, amygdalin, L- and D-arabinose, L- and D-arabitol, cellobiose, dulcitol, erythritol,
esculin, fucose, galactose, beta-gentiobiose, gluconate, methyl alpha-D-glucopyranoside, glycerol, glycogen, inositol, inulin, 2- and
5-ketogluconate, lactose, D-lyxose, maltose, melezitose, melibiose, raffinose, rhamnose, ribose, sorbose, starch, sucrose, tagatose,
trehalose, turanose, xylitol, and xylose.
(c) Costin Stoica
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