Mycobacterium flavescens

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Mycobacterium flavescens
Scientific classification
Kingdom: Bacteria Phylum: Actinobacteria Order: Actinomycetales Suborder: Corynebacterineae Family: Mycobacteriaceae Genus: Mycobacterium Species: M. flavescens
Binomial name
Mycobacterium flavescens Bojalil et al. 1962, ATCC 14474

Mycobacterium flavescens
Etymology: Latin, flavescens = becoming golden yellow.

Contents 1 Description 2 Pathogenesis 3 Type Strain 4 References

[edit] 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 Mycobacterium fortuitum: can be distinguished by its intense pigment production, and its slow rate of growth.

[edit] Pathogenesis

Not associated with disease. Biosafety level 2.

[edit] 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.

[edit] References

• Bojalil et al. 1962. Adansonian classification of mycobacteria. Journal of General Microbiology, 28, 333-346.]