Phylum Actinobacteria, Class Actinobacteria, Order Actinomycetales, Suborder Corynebacterineae, Family Mycobacteriaceae, Genus
Mycobacterium, Mycobacterium kyorinense Okazaki et al. 2009.
Acid-alcohol-fast rods, 3 x 0.3 µm. Non-motile. Non-spore-forming.
Colony diameters are 1–2 mm on Middlebrook 7H11-OADC agar. Colonies on 1 %
Ogawa egg agar are smooth and raised with round or lobate regular margins, and
non-chromogenic. Growth requires 4 weeks at 28–42 ºC. No growth occurs at 25 ºC.
Isolated from sputum and from pus in lymph nodes.
Susceptible to clarithromycin and ethambutol. Resistant to isoniazid and rifampicin.
Undetermined. Isolated from sputum in a patient with pneumonia.
- Okazaki M, Ohkusu K, Hata H, Ohnishi H, Sugahara K, Kawamura C, Fujiwara N, Matsumoto S, Nishiuchi Y, Toyoda K, et al.
Mycobacterium kyorinense sp. nov., a novel, slow-growing species, related to Mycobacterium celatum, isolated from human
clinical specimens. Int J Syst Evol Microbiol 2009; 59:1336-1341.
Positive results for arylsulfatase (14 days), heat-stable catalase.
Negative results for arylsulfatase (3 days), semiquantitative catalase, niacin accumulation, nitrate reductase, pyrazinamidase, tellurite
reduction, Tween hydrolysis, and urease.
(c) Costin Stoica