Phylum Actinobacteria, Class Actinobacteria, Order Actinomycetales, Suborder Corynebacterineae, Family Mycobacteriaceae, Genus
Mycobacterium, Mycobacterium oryzae Ramaprasad et al. 2016.
Acid-fast rods, 0.4-0.6 x 1.4-2.0 µm. Gram-positive. Non-motile. Non-spore-forming.
Colonies on TSA are convex, circular, smooth and opaque with entire margins,
orange, scotochromogenic and 2-3 mm in diameter within 3-5 days at 30 ºC and pH
7). Optimum growth occurs at 30 ºC (range, 25-45 ºC). NaCl is not required for growth
and tolerates up to 4% (w/v) NaCl.
Isolated from a paddy soil collected from Kankumbi, Western Ghats, Karnataka, India.
Susceptible to amikacin, azithromycin, ciprofloxacin, doxycyclin, vancomycin, rifampin and streptomycin.
Undetermined. Potentially infectious to human cells.
- Ramaprasad EV, Rizvi A, Banerjee S, Sasikala C, Ramana CV. Mycobacterium oryzae sp. nov., a scotochromogenic, rapidly
growing species is able to infect human macrophage cell line. Int J Syst Evol Microbiol 2016; 66:4530-4536.
Positive results for catalase, Tween 80 hydrolysis, and urease.
Can utilize cellobiose, sucrose, L-serine, citrate, N-acetyl-D-glucosamine, D-fructose, D-mannose, L-rhamnose, D-xylose, inositol,
D-mannitol, D-sorbitol, acetate, DL-lactate, L-malate, pyruvate, D-glucose and fumarate.
Negative results for casein hydrolysis and nitrate reduction.
No utilization of D-galactose and L-arabinose.
(c) Costin Stoica