Mycobacterium intermedium

Mycobacterium intermedium
Scientific classification
Domain:	Bacteria
Phylum:	"Actinobacteria"
Class:	Actinobacteria
Order:	Mycobacteriales
Family:	Mycobacteriaceae
Genus:	Mycobacterium
Species:	M. intermedium
Binomial name
	Mycobacterium intermedium; Meier et al. 1993, ATCC 51848

Mycobacterium intermedium 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; intermedium, meaning between, rapidly and slowly growing mycobacteria.

Description[]

Gram-positive, and nonmotile acid-fast coccobacilli (2.0 µm x 2.6 µm).

Colony characteristics

, smooth and photochromogenic colonies (3–5mm in diameter) on Löwenstein-Jensen medium.

Physiology

Growth on Löwenstein-Jensen medium at 22 °C, 31 °C, 37 °C and 41 °C, (optimal temperature between 31 °C and 37 °C), within 2–3 weeks.
Susceptible to ethambutol and rifampin.
Resistant to isoniazid and streptomycin.

Differential characteristics

Phylogenetic position between rapidly and slowly growing mycobacteria.
M. asiaticum is phenotypically very similar, but can be distinguished by its growth at 22 °C, and by its growth.

Strain 1669/91 = ATCC 51848 = CCUG 37583 = CIP 104542 = DSM 44049 = JCM 13572

Meier et al. 1993. Mycobacterium intermedium sp. nov. Int. J. Syst. Bacteriol., 1993, 43, 204–209.

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