Mycobacterium lacus

Species of bacterium

Mycobacterium lacus
Scientific classification Edit this classification
Domain: Bacteria
Phylum: Actinomycetota
Class: Actinomycetia
Order: Mycobacteriales
Family: Mycobacteriaceae
Genus: Mycobacterium
Species:
M. lacus
Binomial name
Mycobacterium lacus
Turenne et al. 2002, ATCC BAA-323

Mycobacterium lacus is a species of bacteria in the genus Mycobacterium known to be a causative agent in immunocompetent individuals.

Description

Large, dispersed acid-fast bacilli with prominent beading

Colony characteristics

  • Colonies on Löwenstein–Jensen medium were nonchromogenic, small, with a dry appearance.
  • On Middlebrook 7H10 agar, colonies are small, non-pigmented and smooth to rough, with a slightly irregular edge. Younger colonies appeared slightly transparent.

Physiology

  • Growth was observed on Löwenstein–Jensen medium at two weeks at both 37 and 42 °C and at 3 weeks at 30 °C. At four weeks, very little growth was observed at 25 °C, and no growth was observed at 52 °C.

Pathogenesis

  • The causative agent of bursitis in an immunocompetent individual.

Type strain

  • Isolated from synovial tissue from a 68-year-old female with bursitis of her right elbow. The likely exposure was in a lake.

Strain NRCM 00-255 = ATCC BAA-323 = DSM 44577

References

  • Turenne et al. 2002. Mycobacterium lacus sp. nov., a novel slowly growing, non-chromogenic clinical isolate. Int. J. Syst. Evol. Microbiol., 52, 2135–2140. PMID 12508880

External links

  • Type strain of Mycobacterium lacus at BacDive - the Bacterial Diversity Metadatabase
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Mycobacteria (including Nontuberculous)
Slowly growing
(R1P=photochromogenic;
R2S=scotochromogenic;
R3N=nonchromogenic)
Long helix 18
(TKHGC)
M. tuberculosis group
K/H groups
M. kansasii group
M. haemophilum group
M. gordonae group
M. conspicuum group
Long helix 18
(other)
M. xenopi group
M. celatum group
M. hiberniae group
Short helix 18
M. simiae clade
M. intermedium group
Ungrouped
Rapidly growing/
Runyon IV
M. neoaurum group
F/T groups
M. fortuitum group
M. vaccae group
M. smegmatis group
M. chelonae group
M. elephantis group
Taxon identifiers
Mycobacterium lacus


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