Mycobacterium intermedium
Species of bacterium
From Wikipedia, the free encyclopedia
Mycobacterium intermedium 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.
| Mycobacterium intermedium | |
|---|---|
Scientific classification  | |
| Domain: | Bacteria |
| Kingdom: | Bacillati |
| Phylum: | Actinomycetota |
| Class: | Actinomycetes |
| Order: | Mycobacteriales |
| Family: | Mycobacteriaceae |
| Genus: | Mycobacterium |
| Species: | M. intermedium |
| Binomial name | |
| Mycobacterium intermedium Meier et al. 1993, ATCC 51848 | |
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
- Eugonic, 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 dysgonic growth.
Pathogenesis
- Pulmonary disease
- Biosafety level 2
Type strain
- Repeatedly isolated from sputum from a patient with pulmonary disease.
Strain 1669/91 = ATCC 51848 = CCUG 37583 = CIP 104542 = DSM 44049 = JCM 13572
