Mycobacterium cookii

Mycobacterium cookii 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 cocci
Scientific classification
Kingdom:
Bacteria
Phylum:
Order:
Suborder:
Family:
Genus:
Species:
M. cookii
Binomial name
Mycobacterium cookii
Kazda et al. 1990, ATCC 51304

Description

Gram-positive, nonmotile and polymorphic acid-fast rods (0.8 µm x 1.4–1.9 µm). Forms clumps, but not cords or cross bands. Does not form spores, capsules and aerial hyphae.

Colony characteristics

  • Colonies are smooth and glistening with yellow-orange pigmentation (0.5–1.0 mm diameter, scotochromogenic).

Physiology

Differential characteristics

  • Phylogenetic position between the slowly growing pathogenic species and the saprotrophic rapidly growing species by partial 16S rDNA sequencing.

Pathogenesis

  • Not pathogenic for humans, mice, guinea pigs and rabbits. Biosafety level 1.
  • Provokes a non-specific hypersensitivity reaction to bovine tuberculin.

Type strain

Strain NZ2 = ATCC 49103 = CIP 105396 = DSM 43922 = JCM 12404.

References

    • Kazda et al. 1990. Mycobacterium cookii sp. nov. Int. J. Syst. Bacteriol.,40, 217-223.


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