Phylum Actinobacteria, Class Actinobacteria, Order Micrococcales, Family Microbacteriaceae, Genus Microbacterium, Microbacterium
resistens (Funke, Lawson, Nolte, Weiss and Collins 1998) Behrendt, Ulrich and Schumann 2001.
Historical synonyms: Aureobacterium resistens Funke, Lawson, Nolte, Weiss and Collins 1998.
Gram-positive small, slim rods, 1-2 µm in length, arranged as single cells or in
clusters. Nonmotile. Asporogenous.
Colonies are small after 1 day incubation (up to 1.5 mm in diameter), convex,
glistening, of creamy consistency, with yellow pigment on Columbia agar with 5%
sheep blood in a 5% CO2 – enriched atmosphere. Camp-negative. Grows at 37 ºC.
Grows in 2% NaCl medium.
Isolated from human clinical specimens (a corneal ulcer of a 14 year old female wearing contact lenses and a blood culture of a 39
year old male with acute myelogenous leukemia). Resistant to vancomycin but susceptible to teicoplanin.
- Suzuki K.I. and Hamada M., 2012. Genus I. Microbacterium Orla-Jensen 1919, emend. Takeuchi and Hatano 1998. In: Goodfellow
M., Kampfer P. et al. (Editors), Bergey’s Manual of Systematic Bacteriology, Second Edition, Vol. Five, The Actinobacteria, Part A, p.
- Behrendt U., Ulrich A. And Schumann P., 2001. Description of Microbacterium foliorum sp. nov. and Microbacterium
phyllosphaerae sp. nov., isolated from the phyllosphere of grasses and the surface litter after mulching the sward, and
reclassification of Aureobacterium resistens (Funke et al. 1998) as Microbacterium resistens comb. nov. Int J Syst Evol Microbiol
- Funke G., Lawson P.A., Nolte F.S., Wiss N., Collins M.D. 1998. Aureobacterium resistens sp. nov., exhibiting vancomycin
resistance and teicoplanin susceptibility. FEMS Microbiol Lett 158, 89-93.
Oxidative metabolism. Some characters were determined using API Coryne
(numerical code 2472325).
Positive results for acid phosphatase, alkaline phosphatase, casein hydrolysis, catalase, cystine arylamidase, DNase, esculin
hydrolysis, esterase (C4), esterase lipase (C8), alpha-fucosidase, beta-galactosidase, alpha- and beta-glucosidase,
N-acetyl-glucosaminidase, gelatin hydrolysis, leucine arylamidase, alpha-mannosidase, phosphoamidase, pyrazinamidase, tyrosine
hydrolysis, acid production (oxidatively) from: glucose, maltose, ribose & sucrose.
Negative results for arginine dihydrolase, chymotrypsin, alpha-galactosidase, beta-glucuronidase, H2S production, nitrate reduction,
pyrrolidonyl arylamidase, starch hydrolysis, urease, Voges-Proskauer test, acid production from: glycogen, lactose, mannitol & xylose.
(c) Costin Stoica