''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 ''Mycobacterium xenopi'' is a slow-growing scotochromogenic species of ''Mycobacterium''. It was first reported by Schwabacher in 1959, having been isolated in lesions found on a ''Xenopus laevis'', but the possibility of human infection was not ...

''.

Etymology Etymology ()The New Oxford Dictionary of English (1998) – p. 633 "Etymology /ˌɛtɪˈmɒlədʒi/ the study of the class in words and the way their meanings have changed throughout time". is the study of the history of the Phonological chan ...

: botniense; of Botnia, referring to the Latin name of the province of Finland from which the isolation was made.

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.

External links

Type strain of ''Mycobacterium botniense'' at Bac''Dive'' - the Bacterial Diversity Metadatabase
Acid-fast bacilli botniense Bacteria described in 2000 {{Mycobacterium-stub