Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Actinomycetota, Class Actinomycetes, Order Mycobacteriales, Family Corynebacteriaceae, Genus Corynebacterium, CDC
coryneform group G CDC 1981.
Gram-positive, pleomorphic rods.
Grows anaerobically. CAMP reaction is negative.
May be recovered from a variety of sources (blood, eye, skin, semen, mitral valve, abscesses, urethra).
expressing multiple resistance to common antibiotics (often to clindamycin and erythromycin)
Infrequently reported as causative agents of disease: a fatal endocarditis, a septic arthritis and endocarditis in a patient with lupus
erythematosus.
- Funke G., von Graevenitz A., Clarridge III J.E., and Bernard K.A., 1997. Clinical Microbiology of Coryneform Bacteria. Clinical
Microbiology Rewiews Vol. 10, No. 1, p. 125-159.
- Funke G., 2006. Corynebacteria and rare coryneforms. In: Topley & Wilson’s Microbiology & Microbial Infections, 10th Edition,
Edited by Borriello S.P., Murray P.R. and Funke G.,Edward Arnold (Publishers) Ltd., Bacteriology, volume 2.
Fermentative metabolism.
Positive results for alkaline phosphatase, lipophilism, pyrazinamidase, acid production
from fructose and glucose.
Negative results for esculin hydrolysis, urease, acid production from: mannitol and xylose.
Acid production from maltose and sucrose is variable. Nitrate reduction is positive for G-1 and negative for G-2.
(c) Costin Stoica