| Corynebacterium lactis |
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Actinomycetota, Class Actinomycetes, Order Mycobacteriales, Family Corynebacteriaceae, Genus Corynebacterium,
Corynebacterium lactis Wiertz, Schulz, Müller, Kämpfer and Lipski 2013.
Corynebacterium lactis Wiertz, Schulz, Müller, Kämpfer and Lipski 2013.
Gram-positive pleomorphic short rods, 1.0-1.6 x 0.6-0.8 µm. Non-spore-forming.
Non-motile. Tuberculostearic acid is absent. Mycolic acids are not present.
Non-motile. Tuberculostearic acid is absent. Mycolic acids are not present.
Colonies on TSA after 3 days of incubation under aerobic conditions at 30 ºC are
about 2 mm in diameter, white, white, with uneven edge and dry. On Columbia blood
agar colonies are about 4 mm in diameter, white, with uneven edge and dry.
Non-haemolytic. Can grow at 42 ºC, but not at 20 ºC.
about 2 mm in diameter, white, white, with uneven edge and dry. On Columbia blood
agar colonies are about 4 mm in diameter, white, with uneven edge and dry.
Non-haemolytic. Can grow at 42 ºC, but not at 20 ºC.
Isolated from raw cow milk produced in Germany.
Undetermined.
- Wiertz R., Schulz S.C., Muller U., Kampfer P. and Lipski A., 2013. Corynebacterium frankenforstense sp. nov. and
Corynebacterium lactis sp. nov., isolated from raw cow milk. IJSEM 63, 4495-4501.
Most biochemical reactions were determined by API Coryne, API 50CH, and API ZYM.
Fermentative metabolism.
Positive results for catalase, pyrazinamidase, acid production from: fructose, glucose
at 42 ºC and 37 ºC, mannose and ribose.
Negative results for alpha- and beta-galactosidase, gelatin hydrolysis, alpha- and beta-glucosidase, N-acetyl-beta-glucosaminidase,
lipase (C14), nitrate reduction, oxidase, starch hydrolysis, trypsin, urease, acid production from: adonitol, amygdalin, L- or
D-arabinose, D-arabitol, arbutin, N-acetyl-glucosamine, cellobiose, dulcitol, erythritol, fucose, galactose, gentiobiose, gluconate, 2 or
5-ketogluconate, glycogen, inositol, inulin, lactose, lyxose, maltose, mannitol, melezitose, melibiose, raffinose, rhamnose, sorbitol,
sorbose, starch, tagatose, turanose, xylitol and xylose.
Variable results for alkaline phosphatase, acid phosphatase, esterase lipase, beta-glucuronidase, acid production from: galactose,
sucrose and trehalose.
Fermentative metabolism.
Positive results for catalase, pyrazinamidase, acid production from: fructose, glucose
at 42 ºC and 37 ºC, mannose and ribose.
Negative results for alpha- and beta-galactosidase, gelatin hydrolysis, alpha- and beta-glucosidase, N-acetyl-beta-glucosaminidase,
lipase (C14), nitrate reduction, oxidase, starch hydrolysis, trypsin, urease, acid production from: adonitol, amygdalin, L- or
D-arabinose, D-arabitol, arbutin, N-acetyl-glucosamine, cellobiose, dulcitol, erythritol, fucose, galactose, gentiobiose, gluconate, 2 or
5-ketogluconate, glycogen, inositol, inulin, lactose, lyxose, maltose, mannitol, melezitose, melibiose, raffinose, rhamnose, sorbitol,
sorbose, starch, tagatose, turanose, xylitol and xylose.
Variable results for alkaline phosphatase, acid phosphatase, esterase lipase, beta-glucuronidase, acid production from: galactose,
sucrose and trehalose.
(c) Costin Stoica
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