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Mycobacterium botniense: Wikis

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Mycobacterium botniense
Scientific classification
Kingdom: Bacteria
Phylum: Actinobacteria
Order: Actinomycetales
Suborder: Corynebacterineae
Family: Mycobacteriaceae
Genus: Mycobacterium
Species: M. botniense
Binomial name
Mycobacterium botniense
Torkko et al. 2000, ATCC 700701

Mycobacterium botniense is a slowly growing Mycobacterium, which produces a yellow pigment. It was first isolated from a stream of water. M. botniense is most closely related to Mycobacterium xenopi. Etymology: botniense; of Botnia, referring to the Latin name of the province of Finland from which the isolation was made.

Contents

Description

Microscopy

  • Gram-positive, nonmotile and acid-fast rods.

Colony characteristics

  • Colonies on Löwenstein-Jensen media and on Middlebrook 7H11 agar are small, dysgonic and scotochromogenic, and produce yellow pigment.

Physiology

  • Visible growth from diluted inocula requires 5 to 8 weeks. Growth occurs at 37 to 50 °C.
  • The type strain is positive for 10-d arylsulfatase and pyrazinamidase.
  • Negative for 3-d arylsulfatase, urease, nitrate reductase, semi-quantitative catalase, heat-stable catalase, acid phosphatase, b-galactosidase and 5% NaCl tolerance.
  • Tween 80 is not hydrolysed in 10 d.

Differential characteristics

  • A phylogenetic tree based on the evaluation of 16S rDNA sequences places M. botniense among the slow-growing mycobacteria, closest to M. xenopi.

Pathogenesis

  • Not known, but first isolated from an environmental source.

Type Strain

  • First isolated in Finland from stream waters. Strain E347 = ATCC 700701 = CCUG 47976 = CIP 106753 = DSM 44537.

References

  • Torkko P. 2000., Mycobacterium xenopi and related organisms isolated from stream waters in Finland and description of Mycobacterium botniense sp. nov. Int. J. Syst. Evol. Microbiol., 50, 283-289.
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