| Listeria immobilis |
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Bacillota (Firmicutes), Class Bacilli, Order Bacillales, Family Listeriaceae, Genus Listeria, Listeria immobiliss Carlin et al.
2021.
2021.
Gram-positive, short rods. Non-motile at 25 and 37 ºC.
Colonies on MOX are small, round, black, with sunken centres. Colonies on LMCPM
were of similar size and shape as colonies on MOX and are opaque-white in colour.
Growth occurs at 4-41 ºC in BHI broth with optimal growth between 30-37 ºC after 24h.
Facultative anaerobe.
were of similar size and shape as colonies on MOX and are opaque-white in colour.
Growth occurs at 4-41 ºC in BHI broth with optimal growth between 30-37 ºC after 24h.
Facultative anaerobe.
Isolated from soil in USA.
Presumed to be nonpathogenic based on the absence of haemolysis on SBA, lack of PI-PLC activity on LMCPM, and the absence of
six virulence genes (prfA, plcA, hly, mpl, actA and plcB) located on LIPI-1 as well as the absence inlA and inlB.
six virulence genes (prfA, plcA, hly, mpl, actA and plcB) located on LIPI-1 as well as the absence inlA and inlB.
- Carlin CR, Liao J, Weller D, Guo X, Orsi R, Wiedmann M. Listeria cossartiae sp. nov., Listeria immobilis sp. nov., Listeria portnoyi
sp. nov. and Listeria rustica sp. nov., isolated from agricultural water and natural environments. Int J Syst Evol Microbiol 2021; 71:
4795.
Positive results for arylamidase, catalase, esculin hydrolysis, Voges-Proskauer test,
acid production from: amygladin, arbutin D-arabitol, D-cellobiose, D-fructose,
D-glucose, gentibiose, D-mannose, methyl alpha-D-glucopyranoside, N-acetylglucosamine, D-ribose, salicin, D-trehalose (weak)
and D-xylose.
Negative results for alpha-mannosidase, nitrate reduction, oxidase, acid production from: D- and L-arabinose, L-arabitol, dulcitol,
erythritol, D- and L-fucose, D-galactose, glucose-1-phosphate, glycogen, gluconate, 2- and 5-ketogluconate, inositol, inulin, D-lyxose,
D-mannitol, melibiose, methyl alpha-D-mannopyranoside, methyl-alpha-D-xylopyranoside, L-rhamnose, D-raffinose, D-sorbitol,
starch, tagatose, turanose, xylitol and L-xylose.
Variable results for acid production from: glycerol, lactose, maltose, melezitose and sucrose.
acid production from: amygladin, arbutin D-arabitol, D-cellobiose, D-fructose,
D-glucose, gentibiose, D-mannose, methyl alpha-D-glucopyranoside, N-acetylglucosamine, D-ribose, salicin, D-trehalose (weak)
and D-xylose.
Negative results for alpha-mannosidase, nitrate reduction, oxidase, acid production from: D- and L-arabinose, L-arabitol, dulcitol,
erythritol, D- and L-fucose, D-galactose, glucose-1-phosphate, glycogen, gluconate, 2- and 5-ketogluconate, inositol, inulin, D-lyxose,
D-mannitol, melibiose, methyl alpha-D-mannopyranoside, methyl-alpha-D-xylopyranoside, L-rhamnose, D-raffinose, D-sorbitol,
starch, tagatose, turanose, xylitol and L-xylose.
Variable results for acid production from: glycerol, lactose, maltose, melezitose and sucrose.
(c) Costin Stoica
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