Phylum Actinobacteria, Class Actinobacteria, Order Actinomycetales, Suborder Corynebacterineae, Family Mycobacteriaceae, Genus
Mycobacterium, Mycobacterium paragordonae Lee et al. 2010.
Derived from strains previously identified as M. scrofulaceum. Genetically related to Mycobacterium seoulense.
Acid-alcohol-fast rods, frequently curved. Non-spore-forming. Filaments not produced.
Colonies are smooth / occasionally rough, and orange on Middlebrook 7H10 agar.
Cells on LJ medium grow in a film-like manner and produce an orange pigment.
Optimum growth at 37 ºC and no growth at 45 ºC. No growth is observed on
MacConkey agar or on culture medium containing 5% NaCl.
Isolated from a human sputum sample, in Seoul, Korea. Resistant to thiophene-2-carboxylic acid hydrazide (TCH) and p-nitrobenzoate.
Susceptible to ethambutol.
Undetermined. Isolated from a patient with a symptomatic pulmonary infection.
- Lee HK, Lee SA, Lee IK, Yu HK, Park YG, Hyun JW, Kim K, Kook YH, Kim BJ. Mycobacterium paraseoulense sp. nov., a slowly
growing, scotochromogenic species related genetically to Mycobacterium seoulense. Int J Syst Evol Microbiol 2010; 60:439-443.
Species is indistinguishable from M. scrofulacem by morphobiochemical characters.
Positive results for heat stable catalase, tellurite reductase, pyrazinamidase and urease.
Negative results for arylsulfatase (3 and 14 days), niacin accumulation, nitrate reductase, and Tween 80 hydrolysis.
(c) Costin Stoica