Mycobacterium duvalii

Mycobacterium duvalii
Scientific classification
Domain:	Bacteria
Phylum:	Actinomycetota
Class:	Actinomycetia
Order:	Mycobacteriales
Family:	Mycobacteriaceae
Genus:	Mycobacterium
Species:	M. duvalii
Binomial name
	Mycobacterium duvalii; Stanford and Gunthorpe 1971, ATCC 51304

Mycobacterium duvalii is a species of the phylum Actinomycetota (Gram-positive bacteria with high guanine and cytosine content, one of the dominant phyla of all bacteria), belonging to the genus Mycobacterium.

Description

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

Colony characteristics

Bright yellow pigmented, scotochromogenic and rough or smooth colonies on Löwenstein–Jensen medium.

Physiology

Fast growth on Löwenstein–Jensen medium at 25 °C and 37 °C within 7 days. No growth at 45 °C.
Resistant to isoniazid, rifampicin, and sodium aminosalicylate.

Differential characteristics

Characterised by the possession of 6 species-specific antigens demonstrable in immunodiffusion tests.

Pathogenicity.

Not pathogenic, but evidence insufficient. Biosafety level 1.

First isolated from cases of human leprosy by C. W. Duval. Strain ATCC 43910 = CCUG 41352 = CIP 104539 = DSM 44244 = JCM 6396 = NCTC 358.

Stanford, J. et al. 1971. A study of some fast-growing scotochromogenic mycobacteria including species descriptions of Mycobacterium gilvum (new species) and Mycobacterium duvalii (new species). British Journal of Experimental Pathology, 52, 627–637.] PMID 5002706

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