Taxonomy
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Phylum Actinobacteria, Class Actinobacteria, Subclass Actibacteridae, Order Actynomycetales, Suborder Corynebacterinae, Family
Corynebacteriaceae, Genus Corynebacterium,
Corynebacterium testudinoris Collins, Hoyles, Hutson, Foster and Falsen 2001.

Description is based on a single isolate.
Gram-positive diphtheroid rods. Non-spore-forming. Non-motile. Tuberculostearic
acid is absent. Mycolic acids are present.
Cultured on Columbia blood agar base supplemented with 5% defibrinated sheep
blood at 37 ºC in air plus 5% CO
2. Colonies are yellow pigmented. Non-haemolytic.
Facultatively anaerobic.
Isolated from necrotic lesions in mouth of a tortoise. Habitat is unknown.
Undetermined.
  1. Collins M.D., Hoyles L., Hutson R.A., Foster G. and Falsen E., 2001. Corynebacterium testudinoris sp. nov., from a tortoise, and
    Corynebacterium felinum sp. nov., from a Scottish wild cat. IJSEM 51, 1349-1352.
Most biochemical reactions were determined by API Coryne and API ZYM tests.

Positive results for acid phosphatase (weak), catalase, esculin hydrolysis, esterase C4 (weak), ester lipase C8 (weak),
beta-glucosidase, nitrate reduction, acid production from: glucose, maltose, ribose & sucrose.

Negative results for N-acetyl-beta-glucosaminidase, alkaline phosphatase, cystine arylamidase, chymotrypsin, alpha-fucosidase,
alpha-galactosidase, beta-galactosidase, beta-glucuronidase, gelatin hydrolysis, lipophilic reaction, pyrazinamidase, urease, acid
production from: glycogen, lactose, mannitol & xylose.

Variable results for alpha-glucosidase.
Corynebacterium testudinoris
(c) Costin Stoica
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