| Corynebacterium freiburgense |
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Actinobacteria, Class Actinobacteria, Subclass Actibacteridae, Order Actynomycetales, Suborder Corynebacterinae, Family
Corynebacteriaceae, Genus Corynebacterium, Corynebacterium freiburgense Funke, Frodl, Bernard and Englert 2009.
Description is based on a single isolate.
Corynebacteriaceae, Genus Corynebacterium, Corynebacterium freiburgense Funke, Frodl, Bernard and Englert 2009.
Description is based on a single isolate.
Gram-positive, typically club-shaped rods that occur as single cells, in pairs or in
small clusters. Non-spore-forming. Non-motile. Mycolic acids are not present.
small clusters. Non-spore-forming. Non-motile. Mycolic acids are not present.
Cultured on Columbia blood agar base supplemented with 5% defibrinated sheep
blood at 37 ºC in air plus 5% CO2; colonies are beige-whitish, dryish, convoluted with
irregular edges, strongly adherent to agar and up to 1-2 mm in diameter after 48 h
incubation. In 5-day-old colonies, a ‘spoke-wheel’ macroscopic morphology may be
observed. Weak anaerobic growth. CAMP test is negative.
blood at 37 ºC in air plus 5% CO2; colonies are beige-whitish, dryish, convoluted with
irregular edges, strongly adherent to agar and up to 1-2 mm in diameter after 48 h
incubation. In 5-day-old colonies, a ‘spoke-wheel’ macroscopic morphology may be
observed. Weak anaerobic growth. CAMP test is negative.
Isolated from a patient’s wound obtained from a dog bite. Susceptible to cefotaxime, ciprofloxacin, doxycycline, erythromycin,
gentamicin, linezolid, meropenem, penicillin, rifampicin, vancomycin and vibriocidal compound O/129.
gentamicin, linezolid, meropenem, penicillin, rifampicin, vancomycin and vibriocidal compound O/129.
Undetermined.
- Funke G., Frodl R., Bernard K.A. and Englert R., 2009. Corynebacterium freiburgense sp. nov., isolated from a wound obtained
from a dog bite. IJSEM 59, 2054-2057.
Some biochemical reactions were determined by API Coryne (1440365).
Positive results for acid phosphatase, catalase, esculin hydrolysis (delayed: after 72 h only), ester lipase (C8), esterase (C4),
beta-galactosidase, beta-glucosidase, nitrate reduction, acid production from: fructose, galactose, glucose, 5-ketogluconate, lactose,
maltose, mannose, ribose, sucrose & tagatose.
Negative results for alkaline phosphatase, alpha-galactosidase, alpha-glucosidase, beta-glucuronidase, gelatin hydrolysis,
N-acetyl-beta-glucosaminidase, lipophilic reaction, pyrazinamidase, urease, acid production from: adonitol, amygdalin, arabinose,
arabitol, arbutin, cellobiose, dulcitol, erythritol, fucose, gentiobiose, gluconate, glycerol, glycogen, methyl alpha-D-glucoside,
N-acetyl-beta-glucosamine, mannitol, inositol, inulin, 2-ketogluconate, lyxose, melezitose, melibiose, methyl alpha-D-mannoside,
raffinose, rhamnose, salicin, sorbitol, sorbose, starch, trehalose, turanose, xylitol, xylose & methyl beta-xyloside.
Positive results for acid phosphatase, catalase, esculin hydrolysis (delayed: after 72 h only), ester lipase (C8), esterase (C4),
beta-galactosidase, beta-glucosidase, nitrate reduction, acid production from: fructose, galactose, glucose, 5-ketogluconate, lactose,
maltose, mannose, ribose, sucrose & tagatose.
Negative results for alkaline phosphatase, alpha-galactosidase, alpha-glucosidase, beta-glucuronidase, gelatin hydrolysis,
N-acetyl-beta-glucosaminidase, lipophilic reaction, pyrazinamidase, urease, acid production from: adonitol, amygdalin, arabinose,
arabitol, arbutin, cellobiose, dulcitol, erythritol, fucose, gentiobiose, gluconate, glycerol, glycogen, methyl alpha-D-glucoside,
N-acetyl-beta-glucosamine, mannitol, inositol, inulin, 2-ketogluconate, lyxose, melezitose, melibiose, methyl alpha-D-mannoside,
raffinose, rhamnose, salicin, sorbitol, sorbose, starch, trehalose, turanose, xylitol, xylose & methyl beta-xyloside.
(c) Costin Stoica
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