Phylum Actinobacteria, Class Actinobacteria, Order Actinomycetales, Suborder Corynebacterineae, Family Mycobacteriaceae, Genus
Mycobacterium, Mycobacterium sarraceniae Tran and Dahl 2016.
Acid-fast, slender, bent rods, sometimes curved. Older cultures show a decrease in
Colonies are orange, scotochromogenic and photochromogenic, shiny and smooth.
Growth on Middlebrook 7H11 agar with oleic, albumin, dextrose, catalase reaches
maturity in 7 days at 28 ºC and in 10 days at 32 ºC. No growth at 37 ºC. Weak growth
in 5% NaCl media.
Isolated from water samples collected from S. purpurea pitchers at Repose Lake in northern Minnesota.
Susceptible to neomycin, tetracycline, ampicillin, chloramphenicol, ciprofloxacin, streptomycin and penicillin. Resistant to aztreonam
- Tran PM, Dahl JL. Mycobacterium sarraceniae sp. nov. and Mycobacterium helvum sp. nov., isolated from the pitcher plant
Sarracenia purpurea. Int J Syst Evol Microbiol 2016; 66:4480-4485.
Positive results for arylsulfatase (3 and 14 days).
Negative results for catalase, heat-stable catalase, nitrate reduction, tellurite reduction, Tween 80 hydrolysis and urease.
(c) Costin Stoica