Mycobacterium aichiense
Encyclopedia
Mycobacterium aichiense is a yellow-orange scotochromogenic
, rapidly growing mycobacterium
first isolated from soil and human sputum in Japan. It has not been formally associated with disease in humans.
Colony characteristics
Physiology
Scotochromogenic
Scotochromogenic bacteria develop pigment in the dark or in the light. Runyon Group II nontuberculous mycobacteria are examples but the term could apply to many other organisms....
, rapidly growing mycobacterium
Mycobacterium
Mycobacterium is a genus of Actinobacteria, given its own family, the Mycobacteriaceae. The genus includes pathogens known to cause serious diseases in mammals, including tuberculosis and leprosy...
first isolated from soil and human sputum in Japan. It has not been formally associated with disease in humans.
Description
Microscopy- Gram-positive, nonmotile and acid-fast rods less than 2 µm. Acid-fast in young cultures but may lose acid-fastness on prolonged culture.
Colony characteristics
- Yellow-orange scotochromogenic colonies.
Physiology
- Grows at 25-37°C, not at 45°C, in 3–4 days or less
- Acid phosphatase and arylsulfatase (3 days) is positive.
- Negative for nitrate reduction, isonicotinamidase, and citrate utilisation.
- Does not grow in the presence of hydroxylamine HCl (500 mg/l) and does not degrade PAS.
Type strain
- First isolated in Japan from soil and human sputum.
- Strain 49005 (previously, strain 5545) = ATCC 27280 = CIP 106808 = DSM 44147 = JCM 6376 = LMG 19259 = NCTC 10820.