Mycobacterium madagascariense
Encyclopedia
Mycobacterium madagascariense

Etymology: madagascariense, relating to Madagascar
Madagascar
The Republic of Madagascar is an island country located in the Indian Ocean off the southeastern coast of Africa...

 where it was first isolated.

Description

Polymorphic
Polymorphism (biology)
Polymorphism in biology occurs when two or more clearly different phenotypes exist in the same population of a species — in other words, the occurrence of more than one form or morph...

, gram-positive
Gram-positive
Gram-positive bacteria are those that are stained dark blue or violet by Gram staining. This is in contrast to Gram-negative bacteria, which cannot retain the crystal violet stain, instead taking up the counterstain and appearing red or pink...

, nonmotile and acid-fast
Acid-fast
Acid-fastness is a physical property of certain bacteria, specifically their resistance to decolorization by acids during staining procedures.Acid-fast organisms are difficult to characterize using standard microbiological techniques Acid-fastness is a physical property of certain bacteria,...

 rods.

Colony characteristics
  • Smooth and glistening colonies with yellow or orange pigmentation (1-2mm in diameter).


Physiology
  • Rapid growth on Löwenstein-Jensen medium and Middlebrook 7H10 agar at 31°C. No growth at 37°C or above.


Differential characteristics
  • Differentiated from Mycobacterium aurum
    Mycobacterium aurum
    Mycobacterium aurum is a species of acid fast, gram positive bacteria that forms long chains. Though related to Mycobacterium tuberculosis, it does not cause tuberculosis.-Genotype:*ATCC 23366*CCUG 37666*CIP 104465*DSM 43999*HAMBI 2275...

     and Mycobacterium obuense
    Mycobacterium obuense
    Mycobacterium obuense is a species of Mycobacterium....

     by its failure to grow at 37°C

Type strain

  • First isolated from three different sphagnum
    Sphagnum
    Sphagnum is a genus of between 151 and 350 species of mosses commonly called peat moss, due to its prevalence in peat bogs and mires. A distinction is made between sphagnum moss, the live moss growing on top of a peat bog on one hand, and sphagnum peat moss or sphagnum peat on the other, the...

     biotopes in Madagascar
    Madagascar
    The Republic of Madagascar is an island country located in the Indian Ocean off the southeastern coast of Africa...

    .

Strain P2 = ATCC 49865 = CIP 104538 = JCM 13574.
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