Phylum Actinobacteria, Class Actinobacteria, Order Actinomycetales, Suborder Corynebacterineae, Family Mycobacteriaceae, Genus
Mycobacterium, Mycobacterium algericum Sahraoui et al. 2011.
Member of the Mycobacterium terrae complex.
Species description is based on a single isolate.
Acid-alcohol-fast rods,1.2-1.6 μm long. Nonspore-forming. Cording and filaments are
Colonies on Middlebrook 7H10 agar plates are small, polymorphic, white,
non-chromogenic, smooth and with irregular edges. Colonies grown on
Lowenstein-Jensen medium are small, round and white-yellow. No growth is
observed on MacConkey agar plates with or wthout 5% NaCl. On Middlebrook 7H10
agar plates, growth is fast, with optimal growth between 37 and 40 ºC. No growth at
45 ºC. Microcolonies can be observed after 1 week. However, 5 weeks are necessary
to observe colonies on Lowenstein-Jensen medium.
Isolated from a lung lesion of an Algerian goat and from carp gills (Abramis brama).
Susceptible to clarithromycin, ethambutol and rifabutin. Resistant to low levels of amikacin, moxifloxacin, ofloxacin and rifampicin.
Undetermined. Associated with goat lung lesions.
- Sahraoui N, Ballif M, Zelleg S, Yousfi N, Ritter C, Friedel U, Amstutz B, Yala D, Boulahbal F, Guetarni D, et al. Mycobacterium
algericum sp. nov., a novel rapidly growing species related to the Mycobacterium terrae complex and associated with goat lung
lesions. Int J Syst Evol Microbiol 2011; 61:1870-1874.
- Mrlik V, Slany M, Kubecka J, Seda J, Necas A, Babak V, Slana I, Kriz P, Pavlik I. 2012. A low prevalence of mycobacteria in
freshwater fish from water reservoirs, ponds and farms. J. Fish Dis. 35:497–504. doi:10.1111/j.1365-2761.2012.01369.x.
Positive results for nitrate reductase, catalase, pyrazinamidase, tellurite reduction, and urease.
(c) Costin Stoica