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 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.

Etymology: Latin, flavescens = becoming golden yellow.


Gram-positive, nonmotile and acid-fast rods.

Colony characteristics


  • 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


Not associated with disease. Biosafety level 2.

Type strain[edit]

  • 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.


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

External links[edit]