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Mycobacterium africanum
Scientific classification
Kingdom: Bacteria
Phylum: Actinobacteria
Order: Actinomycetales
Suborder: Corynebacterineae
Family: Mycobacteriaceae
Genus: Mycobacterium
Species: M. agri
Binomial name
Mycobacterium agri
Tsukamura 1981, ATCC 27406

Mycobacterium agri

Contents

Description

Microscopy

  • Gram-positive, nonmotile and acid-fast rods (3-7 µm long). Frequently join to grow in long threads.

Colony characteristics

  • Rough, and nonphotochromogenic colonies.

Physiology

  • Rapid growth on egg media at 22-45°C, not at 52°C, in less than 5 days.
  • Niacin negative, catalase positive, β-galactosidase usually positive.
  • Tween 80 not hydrolysed after 14 days.
  • Resistant to 5% NaCl, p-nitrobenzoic acid (0.5 mg/ml) and thiophene-2-carboxylic acid hydrazide (1 mg/l).

Pathogenesis

Not associated with disease.

Distribution

  • Found in soil world-wide

Type Strain

  • Strain 90012 = ATCC 27406 = CCUG 37673 A = CIP 105391 = DSM 44515 = JCM 6377.

References

  • Tsukamura,M. 1981. Numerical analysis of rapidly growing, nonphotochromogenic mycobacteria, including Mycobacterium agri (Tsukamura 1972) Tsukamura sp. nov., nom. rev. Int. J. Syst. Bacteriol. 31, 247-258.
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