Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Actinobacteria, Class Actinobacteria, Subclass Actibacteridae, Order Actynomycetales, Suborder Corynebacterinae, Family
Corynebacteriaceae, Genus Corynebacterium, Corynebacterium nuruki Shin, Jung, Kim, Roh, Nam and Bae 2011.
Species description is based on a single isolate.
Gram-positive irregular rod-shaped cells. Non-motile. Mycolic acids are present.
Colonies on PY-BHI (peptone-yeast-brain-heart infusion) agar medium are smooth,
opaque, convex, 0.5-1.0 mm in diameter, slightly viscous and cream-coloured after
48 h at 30 ºC. Grows on nutrient agar (NA; Difco), tryptic soy agar (TSA; Bacto),
Columbia agar (BBL) supplemented with 5% horse blood and Corynebacterium
agar (DSM medium no. 53) containing 1% tryptone, 0.5% yeast extract, 0.5%
glucose and 0.5% NaCl (pH 7.2). Strictly aerobic. Grows at/in: 10-45 ºC (37 ºC
optimum). Grows in 0-10% NaCl (1 % NaCl optimum). Grows at pH 6.0-9.0 (pH 8.0
optimum).
Isolated from nuruk, an alcohol fermentation starter of traditional Korean wine.
Undetermined.
- Shin N.R., Jung M.J., Kim M.S., Roh S.W., Nam Y.D. and Bae J.W., 2011. Corynebacterium nuruki sp. nov., isolated from an
alcohol fermentation starter. IJSEM 61, 2430-2434.
Description is based on API CORYNE, API 50CH and API 50CHB results.
Positive results for catalase, alkaline phosphatase, oxidase, pyrazinamidase, acid production from: fructose, galactose, glucose,
5-ketogluconate, mannose, methyl alpha-D-glucoside & ribose.
Negative results for beta-galactosidase, beta-glucuronidase, alpha and beta-glucosidase, N-acetyl-beta-glucosaminidase, nitrate
reduction, pyrrolidonyl arylamidase, urease, acid production from: arabitol, aesculin, arbutin, cellobiose, gluconate, glycerol, mannitol
& salicin.
Assimilates: D-ribose, D-lxylose, D-adonitol, D-galactose, D-glucose, D-fructose, D-mannose, L-sorbose, L-rhamnose, dulcitol,
inositol, D-mannitol, D-sorbitol, methyl a-D-glucoside, N-acetylglucosamine, amygdalin, aesculin, lactose, inulin, melezitose,
gentiobiose, turanose, D-lyxose, gluconate & 5-ketogluconate (API 50CH).
(c) Costin Stoica