Mycobacterium flavescens
| Mycobacterium flavescens | ||||||||||||||
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| Scientific classification | ||||||||||||||
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| Binomial name | ||||||||||||||
| Mycobacterium flavescens Bojalil et al. 1962, ATCC 14474 |
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Mycobacterium flavescens
Etymology: Latin, flavescens = becoming golden yellow.
Description
Gram-positive, nonmotile and acid-fast rods.
Colony characteristics
- Soft, yellow-orange scotochromogenic, butyrous colonies.
Physiology
- Slow growth on Löwenstein-Jensen medium at 25-37°C, but not at 45°C within 7-10 days.
- Although growth rate is intermediate, metabolic and physiologic properties are more like rapidly growing species.
Differential characteristics
- Serologic specificity demonstrated by immunodiffusion.
- Related to M. fortuitum: can be distinguished by its intense pigment production, and its slow rate of growth.
Pathogenesis
Not associated with disease. Biosafety level 2.
Type Strain
- Normal human flora, environmental habitat.
- First isolated from a drug treated tuberculous guinea pig (Mexico).
Strain ATCC 14474 = CCUG 29041 = CIP 104533 = DSM 43991 = JCM 12274 = NCTC 10271 = NRRL B-4038.
References
- Bojalil et al. 1962. Adansonian classification of mycobacteria. Journal of General Microbiology, 28, 333-346.]