| Listeria fleischmannii |
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Firmicutes, Class Bacilli, Order Bacillales, Family Listeriaceae, Genus Listeria, Listeria fleischmannii Bertsch et al. 2013,
2 subspecies:
- Listeria fleischmannii subsp. fleischmannii (Bertsch et al. 2013) den Bakker et al. 2013,
- Listeria fleischmannii subsp. coloradonensis den Bakker et al. 2013.
2 subspecies:
- Listeria fleischmannii subsp. fleischmannii (Bertsch et al. 2013) den Bakker et al. 2013,
- Listeria fleischmannii subsp. coloradonensis den Bakker et al. 2013.
Gram-positive, short rods with rounded ends, 0.4–0.6 x 0.7–1.2 µm. Spores are not
produced. Non-motile at 25 and 37 ºC.
produced. Non-motile at 25 and 37 ºC.
Colonies are 0.4–1.0 mm in diameter, translucent, circular and low convex with entire
margins and smooth surfaces when cultured on BHI and TSB agars. Colonies
appear bluish grey by normal illumination and have a bluish appearance in oblique
transmitted-light. Facultative anaerobic. Optimum growth temperature is 30-37 ºC. No
growth at 47 ºC, Weak growth at 4 ºC after 2 weeks. Hemolysis is not produced.
Camp-negative.
margins and smooth surfaces when cultured on BHI and TSB agars. Colonies
appear bluish grey by normal illumination and have a bluish appearance in oblique
transmitted-light. Facultative anaerobic. Optimum growth temperature is 30-37 ºC. No
growth at 47 ºC, Weak growth at 4 ºC after 2 weeks. Hemolysis is not produced.
Camp-negative.
- Subsp. fleischmannii was isolated from a hard cheese in Switzerland. Resistant to
clindamycin and nalidixic acid.
- Subsp. coloradonensis was isolated from environmental (bovine faecal pat, soil,
drag swab and water) samples collected from a cattle ranch in northern Colorado,
USA.
clindamycin and nalidixic acid.
- Subsp. coloradonensis was isolated from environmental (bovine faecal pat, soil,
drag swab and water) samples collected from a cattle ranch in northern Colorado,
USA.
Undetermined.
- Bertsch D, Rau J, Eugster M, Haug M, Lawson P, Lacroix C, Meile L. 2013. Listeria fleischmannii sp. nov., isolated from cheese. Int
J Syst Evol Microbiol 63(2):526-532 doi:10.1099/ijs.0.036947-0. - den Bakker H, Manuel C, Fortes E, Wiedmann M, Nightingale K. 2013. Genome sequencing identifies Listeria fleischmannii
subsp. coloradonensis subsp. nov., isolated from a ranch. Int J Syst Evol Microbiol 63(9):3257-3268 doi:10.1099/ijs.0.048587-0. - Weller D, Andrus A, Wiedmann M, den Bakker H. 2015. Listeria booriae sp. nov. and Listeria newyorkensis sp. nov., from food
processing environments in the USA. Int J Syst Evol Microbiol 65(1):286-292.
Some characters were determined using API Listeria and API 50 CHB/E kits.
Positive results for catalase, esculin hydrolysis, H2S production, hippurate hydrolysis, methyl red test, nitrate reduction, acid
production from: N-acetylglucosamine, amygdalin, arbutin, D-arabitol, cellobiose, esculin, D-fructose, methyl alpha-D-glucoside,
glycerol, gentiobiose, D-glucose, lactose, D-mannose, maltose, L-rhamnose, D-ribose, salicin, trehalose, xylitol & D-xylose.
Negative results for arylamidase, alpha-mannosidase, oxidase, Voges-Proskauer test, acid production from: L-arabinose, D-adonitol,
L-arabitol, dulcitol, erythritol, D-fucose, glucose 1-phospate, D-galactose, gluconate, 2- and 5-ketogluconate, glycogen, inulin,
D-lyxose, melibiose, raffinose, D-sorbitol, starch, D-tagatose, methyl beta-D-xylopyranoside & L-xylose.
Variable results for acidification of: methyl alpha-D-mannopyranoside & L-sorbose.
Positive results for catalase, esculin hydrolysis, H2S production, hippurate hydrolysis, methyl red test, nitrate reduction, acid
production from: N-acetylglucosamine, amygdalin, arbutin, D-arabitol, cellobiose, esculin, D-fructose, methyl alpha-D-glucoside,
glycerol, gentiobiose, D-glucose, lactose, D-mannose, maltose, L-rhamnose, D-ribose, salicin, trehalose, xylitol & D-xylose.
Negative results for arylamidase, alpha-mannosidase, oxidase, Voges-Proskauer test, acid production from: L-arabinose, D-adonitol,
L-arabitol, dulcitol, erythritol, D-fucose, glucose 1-phospate, D-galactose, gluconate, 2- and 5-ketogluconate, glycogen, inulin,
D-lyxose, melibiose, raffinose, D-sorbitol, starch, D-tagatose, methyl beta-D-xylopyranoside & L-xylose.
Variable results for acidification of: methyl alpha-D-mannopyranoside & L-sorbose.
(c) Costin Stoica
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Legend: + positive, - negative, d variable.