Phylum Actinobacteria, Class Actinobacteria, Subclass Actibacteridae, Order Actynomycetales, Suborder Corynebacterinae, Family
Corynebacteriaceae, Genus Turicella, Turicella otitidis Funke, Stubbs, Altwegg, Carlotti and Collins, 1994. Type species of the genus.
Historical synonym: CDC coryneform group ANF-1 like.
Gram-positive, irregular, long (longer than other coryneforms) diphtheroids rods, that
occur as single cells or are arranged in typical V-shaped forms or palisades
Nonmotile. Spores are not produced. Mycolic acids are not present/produced. Small
amounts of TBSA (tuberculostearic acid) are present/produced.
Colonies are convex, whitish-creamy, 1-2 mm in diameter after 48 h of incubation at
37 ºC in a 5% CO2 atmosphere on 5% sheep blood Columbia agar. Strong CAMP
reaction. Grows in the presence of 6.5% NaCl.
Isolated from middle-ear fluids from patients with otitis media and from ears of healthy control persons; occurring alone or together
with Gram-negative rods.
May be resistant to clindamycin and erythromycin. The MICs of beta-lactam antibiotics for many strains are very low.
Isolated from middle-ear fluids from 1- to 5-year-old patients with otitis media treated in Zürich, Switzerland, and from ears of healthy
control persons. The disease association is under investigation.
- 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.
API Coryne identification code 2100004. Nonfermentative. Oxidative metabolism.
Positive results for alkaline phosphatase, acid phosphatase, catalase, leucine arylamidase & pyrazinamidase.
Negative results for DNA hydrolysis, esculin hydrolysis, gelatin hydrolysis, beta-glucuronidase, beta-galactosidase,
alpha-glucosidase, indole production, lipophilism, nitrate reduction, oxidase, pyrolidonyl arylamidase, starch hydrolysis, urease, acid
production from: glucose, glycogen, lactose, maltose, mannitol, ribose, sucrose & xylose.
(c) Costin Stoica