| Listeria valentina |
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Bacillota (Firmicutes), Class Bacilli, Order Bacillales, Family Listeriaceae, Genus Listeria, Listeria valentina Quereda et al.
2020.
Synonym: Mesolisteria valentina (Quereda et al. 2020) Bouznada et al. 2024.
2020.
Synonym: Mesolisteria valentina (Quereda et al. 2020) Bouznada et al. 2024.
Gram-positive, straight rods. Non-motile. Non-spore-forming. Capsule is not formed.
Colonies are opaque, not pigmented, with a flat shape and entire margin on BHI agar.
On ALOA, colonies are blue-centred without a white halo, typical of Listeria species.
Growth occurs at 22-42 ºC, with optimal growth at 30-37 ºC. Haemolysis is not
produced on Columbia agar containing 5% defibrinated sheep or horse blood.
On ALOA, colonies are blue-centred without a white halo, typical of Listeria species.
Growth occurs at 22-42 ºC, with optimal growth at 30-37 ºC. Haemolysis is not
produced on Columbia agar containing 5% defibrinated sheep or horse blood.
Isolated from a water trough and the faeces of healthy sheep in Valencia, Spain.
Undetermined.
- Quereda JJ, Leclercq A, Moura A, Vales G, Gomez-Martin A, Garcia-Munoz A, Thouvenot P, Tessaud-Rita N, Bracq-Dieye H, Lecuit
M. Listeria valentina sp. nov., isolated from a water trough and the faeces of healthy sheep. Int J Syst Evol Microbiol 2020; 70:5868-
5879.
Positive results for catalase, esculin hydrolysis, Voges-Proskauer test, acid production from: L-arabinose, D-arabitol, aesculin, N-
acetylglucosamine, amygdalin, arbutin, cellobiose, D-fructose, gentiobiose, D-glucose, glycerol, inositol, D-lyxose, D-mannose, L-
rhamnose, D-ribose, salicin, trehalose, D-tagatose and D-xylose.
Negative results for arylamidase, alpha-mannosidase, nitrate and nitrite reduction, oxidase, acid production from: D-adonitol, D-
arabinose, L-arabitol, dulcitol, D- and L-fucose, erythritol, D-galactose, gluconate, 2- and 5-ketogluconate, glucose 1-phosphate,
glycogen, inulin, lactose, maltose, D-mannitol, melezitose, melibiose, methyl alpha-D-glucoside, methyl alpha-D-mannopyranoside,
methyl αalpha-D-glucopyranoside, methyl beta-D-xylopyranoside, raffinose, D-sorbitol, L-sorbose, starch, sucrose, turanose xylitol, and
L-xylose.
acetylglucosamine, amygdalin, arbutin, cellobiose, D-fructose, gentiobiose, D-glucose, glycerol, inositol, D-lyxose, D-mannose, L-
rhamnose, D-ribose, salicin, trehalose, D-tagatose and D-xylose.
Negative results for arylamidase, alpha-mannosidase, nitrate and nitrite reduction, oxidase, acid production from: D-adonitol, D-
arabinose, L-arabitol, dulcitol, D- and L-fucose, erythritol, D-galactose, gluconate, 2- and 5-ketogluconate, glucose 1-phosphate,
glycogen, inulin, lactose, maltose, D-mannitol, melezitose, melibiose, methyl alpha-D-glucoside, methyl alpha-D-mannopyranoside,
methyl αalpha-D-glucopyranoside, methyl beta-D-xylopyranoside, raffinose, D-sorbitol, L-sorbose, starch, sucrose, turanose xylitol, and
L-xylose.
(c) Costin Stoica
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