''Mycobacterium asiaticum'' is a slowly growing
photochromogenic
The Timpe and Runyon classification of nontuberculous mycobacteria based on the rate of growth, production of yellow pigment and whether this pigment was produced in the dark or only after exposure to light.
It was introduced by Ernest Runyon in ...
mycobacterium
''Mycobacterium'' is a genus of over 190 species in the phylum Actinomycetota, assigned its own family, Mycobacteriaceae. This genus includes pathogens known to cause serious diseases in mammals, including tuberculosis ('' M. tuberculosis'') and ...
first isolated from monkeys in 1965. ''M. asiaticum'' can, but rarely, causes human pulmonary disease.
Description
Microscopy
*Gram-positive, nonmotile, acid-fast, coccoid rods.
Colony characteristics
*Dysgonic and yellow photochromogenic (pigment not produced in the dark) colonies.
Physiology
*Slow growth on
Löwenstein-Jensen medium at 37 °C after 15–21 days.
Differential characteristics
*Unique 16S rRNA sequence.
*Biochemically M. asiaticum (photochromogenic) and
Mycobacterium gordonae
''Mycobacterium gordonae'' is a species of ''Mycobacterium'' named for Ruth E. Gordon. It is a species of the phylum Actinomycetota (Gram-positive bacteria with high guanine and cytosine content, one of the dominant phyla of all bacteria), be ...
(scotochromogenic) can only be differentiated by the mode of pigmentation.
Pathogenesis
*Rarely causes human pulmonary disease.
Type strain
*First isolated from monkeys in 1965.
*Strain ATCC 25276 = CCUG 29115 = CIP 106809 = DSM 44297 = JCM 6409.
References
*SKERMAN (V.B.D.), McGOWAN (V.) and SNEATH (P.H.A.) (editors): Approved Lists of Bacterial Names. Int. J. Syst. Bacteriol., 1980, 30, 225–420. [WEISZFEILER (J.), KARASSEVA (G.V.) and KARCZAG (E.): A new Mycobacterium species: Mycobacterium asiaticum n. sp. Acta Microbiologica Academiae Scientiarum Hungaricae, 1971, 18, 247–252.
External links
Type strain of ''Mycobacterium asiaticum'' at Bac''Dive'' - the Bacterial Diversity Metadatabase
Acid-fast bacilli
Nontuberculous mycobacteria, asiaticum
Bacteria described in 1971
{{Mycobacterium-stub