Mycobacterium flavescens
Mycobacterium flavescens is a species of the phylum Actinobacteria (Gram-positive bacteria with high guanine and cytosine content, one of the dominant phyla of all bacteria), belonging to the genus Mycobacterium.
| Mycobacterium flavescens | |
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| Species: | M. flavescens |
| Binomial name | |
| Mycobacterium flavescens Bojalil et al. 1962, ATCC 14474 | |
Etymology
Its name is derived from the Latin word "flavescens", which means "becoming golden yellow."
Description
Gram-positive, nonmotile and acid-fast rods.
Colony characteristics
- Rough, 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 Mycobacterium 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.]
External links
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