| Mycobacterium innocens |
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Actinobacteria, Class Actinobacteria, Order Actinomycetales, Suborder Corynebacterineae, Family Mycobacteriaceae, Genus
Mycobacterium, Mycobacterium innocens Tagini et al. 2019.
Synonym: Mycobacterium kansasii subtype V.
Mycobacterium, Mycobacterium innocens Tagini et al. 2019.
Synonym: Mycobacterium kansasii subtype V.
Acid-fast, moderately long or long rods.
Rough colonies grows in about 14 days at 37 ºC on Lowenstein-Jensen medium.
Beige colonies can be obtained on 7H10 medium after 2 weeks’ growthin the same
culture conditions. Grows at 25 ºC, but not at 45 ºC. Usually photochromogenic. No
growth on 5% (w/v) NaCl or on MacConkey agar without crystal violet.
Beige colonies can be obtained on 7H10 medium after 2 weeks’ growthin the same
culture conditions. Grows at 25 ºC, but not at 45 ºC. Usually photochromogenic. No
growth on 5% (w/v) NaCl or on MacConkey agar without crystal violet.
The type strain was isolated from an expectoration of a patient.
Resistant to TCH (5 µg/ml).
Resistant to TCH (5 µg/ml).
It is rarely pathogenic.
- Tagini F, Aeby S, Bertelli C, Droz S, Casanova C, Prod'hom G, Jaton K, Greub G. Phylogenomics reveal that Mycobacterium
kansasii subtypes are species-level lineages. Description of Mycobacterium pseudokansasii sp. nov., Mycobacterium innocens
sp. nov. and Mycobacterium attenuatum sp. nov. Int J Syst Evol Microbiol 2019; 69:1696-1704. - Jagielski Tomasz, Borowka Paulina, Bakuła Zofia, Lach Jakub, Marciniak Błazej, Brzostek Anna, Dziadek Jarosław, Dziurzynski
Mikołaj, Pennings Lian, van Ingen Jakko, Zolnir-Dovc Manca, Strapagiel Dominik.Genomic Insights Into the Mycobacterium
kansasii Complex: An Update. Front. Microbiol., 15 January 2020, doi.org/10.3389/fmicb.2019.02918. - Jimenez-Pajares MS, Herrera L, Valverde A, Saiz P, Saez-Nieto JA. Phenotypic and genotypic characteristics of Mycobacterium
kansasii strains isolated in Spain (2000-2003). Enferm InfeccMicrobiol Clin 2005;23:254-258.
Positive results for arylsulfatase (10 days).
Negative results for arylsulfatase (3 days), niacin accumulation, pyrazinamidase, and tellurite reduction.
Variable results for thermostable catalase (68 ºC), semi-quantitative catalase test, nitrate reduction, Tween 80 hydrolysis, and urease.
Negative results for arylsulfatase (3 days), niacin accumulation, pyrazinamidase, and tellurite reduction.
Variable results for thermostable catalase (68 ºC), semi-quantitative catalase test, nitrate reduction, Tween 80 hydrolysis, and urease.
(c) Costin Stoica
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