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Phylum Actinobacteria, Class Actinobacteria, Subclass Actibacteridae, Order Actynomycetales, Suborder Corynebacterinae, Family
Corynebacteriaceae, Genus Corynebacterium,
Corynebacterium macginleyi Riegel, Ruimy, De Briel, Prevost, Jehl, Christen and
Monteil, 1995.
Historical synonym: CDC coryneform group G-1 (genomospecies III).
Gram-positive, pleomorphic rods with occasionally metachromatic granules,  
arranged in palisades or V-shaped forms. Nonmotile. Nonspore-forming.
No growth in BHI broth but is visible growth in BHI broth supplemented with 0.01-1%
Tween 80 after 24 h at 37 ºC. Better growth is observed on SBA (sheep blood agar)
plates supplemented with 0.1 % Tween 80 rather with 1% and some strains exhibit a
rose pigment: colonies are large, 2-4 mm in diameter and Tween esterase activity is
noted. The colonies are very small (> 1 mm in diameter) on SBA without Tween 80.
Facultatively anaerobic. Beta-hemolysis and CAMP reaction are negative.
Isolated almost exclusively from eye specimens. Bacterium is susceptible to a broad spectrum of antimicrobial agents.
The type strain was isolated from the eye of a patient suffering from a corneal ulcer.
  1. 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.
  2. 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.
  3. Riegel P., Ruimy R., De Briel D., Prevost G., Jehl F., Christen R., and Monteil H., 1995. Genomic Diversity and Phylogenetic
    Relationships among Lipid-Requiring Diphtheroids from Humans and Characterization of Corynebacterium macginleyi sp. nov.
    IJSB Vol. 45, No. 1, p. 128-133.
Fermentative metabolism. Not acid fast. Tests description is based on API Coryne kit.

Positive results for alkaline phosphatase, catalase, DNA degradation, lipophilism, nitrate reduction
, acid production from: glucose,  
ribose & sucrose.

Negative results for arginine degradation, esculin hydrolysis, gelatin hydrolysis, oxidase, pyrazinamidase, starch hydrolysis, tyrosine
degradation, urease, acid production from: glycogen, lactose, maltose, trehalose & xylose.

Variable results for hippurate hydrolysis & acid production from mannitol.
Corynebacterium macginleyi
(c) Costin Stoica
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