Phylum Actinobacteria, Class Actinobacteria, Order Actinomycetales, Suborder Corynebacterineae, Family Mycobacteriaceae, Genus
Mycobacterium, Mycobacterium rutilum Hennessee et al. 2009.
Medium to long, thin rods. Weak Gram-positive. Non-motile.
Colonies within 7 days are medium-sized, round, raised or flat, mucoid or dry with an
undulated transparent border. When exposed to light they turn from unpigmented to
deep orange. Grows at 28, 37 (optimally), and 45 ºC. Can grow in media containing
5% NaCl. Aerobe.
Isolated from soil from an urban park in Honolulu Hawaii, USA.
Can degrade/utilize phenanthrene, pyrene, benzo[a]pyrene (variable), but not fluoranthene.
- Hennessee CT, Seo JS, Alvarez AM, Li QX. Polycyclic aromatic hydrocarbon-degrading species isolated from Hawaiian soils:
Mycobacterium crocinum sp. nov., Mycobacterium pallens sp. nov., Mycobacterium rutilum sp. nov., Mycobacterium rufum sp. nov.
and Mycobacterium aromaticivorans sp. nov. Int J Syst Evol Microbiol 2009; 59:378-387.
Positive results for catalase, alpha-glucosidase, pyrrolidonyl arylamidase, and urease.
Can utilize glucose, D-mannitol, D-sorbitol, D-xylitol, and D-xylose.
Negative results for alkaline phosphatase, esculin hydrolysis, beta-glucuronidase, beta-galactosidase,
N-acetyl-beta-glucosaminidase, gelatin hydrolysis, and nitrate reduction.
No utilization of citrate.
Variable results for utilization of D-fructose and trehalose.
(c) Costin Stoica