Taxonomy
Morphology
Cultural characteristics
Biochemical characters
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Pathogenicity
References
Phylum Actinobacteria, Class Actinobacteria, Order Micrococcales, Family Microbacteriaceae, Genus Microbacterium, Microbacterium
imperiale
(Steinhaus 1941) Collins, Jones and Kroppenstedt 1983.

Historical synonyms:
Bacterium imperiale Steinhaus 1941, Brevibacterium imperiale
Breed 1953.
Gram-positive, small, slender rods, arranged in angles and V-shapes. Motility is very
weak.
Colonies are low convex, opaque, reddish-orange, moist, 1-4 mm in diameter;
mucoid growth on solid media containing glucose or lactose. Aerobic and weak
anaerobic growth. Grows at 25-30 ºC optimum; range 10-37 ºC. No growth at 40 ºC.
Isolated from alimentary tract of the imperial moth Eacles imperialis.
Undetermined.
  1. 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.
    814-852.
Positive results for catalase, Tween 40, 60  hydrolysis (weak reaction), acid production from: L-arabinose, cellobiose, esculin,
fructose, galactose, glucose, lactose (weak reaction), mannose, raffinose (weak reaction), salicin (weak reaction), sucrose, trehalose
& xylose (weak reaction).

Negative results for arginine decarboxilase, oxidase, Tween 20, 80  hydrolysis, urease, acid production from: adonitol, arbutin,
dulcitol, erythritol, glycerol, inositol, inulin, maltose, mannitol, rhamnose, sorbitol, sorbose & starch.

Variable and weak results for gelatin hydrolysis & starch hydrolysis.
Microbacterium imperiale
(c) Costin Stoica
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