Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Firmicutes, Class Bacilli, Order Bacillales, Family Bacillaceae, Genus Bacillus, Bacillus flexus (ex Batchelor 1919) Priest,
Goodfellow and Todd 1989.
Gram-variable, rods, 0.9 µm mean cell width, presenting centrally / paracentrally,
ellipsoidal endospores  in unswollen sporangia.
Colonies are  opaque and smooth. Aerobic. No anaerobic growth. Grow at pH 4.5 -
9.5 and in 2 - 10 % NaCl.  Growth temperature 17 to 37 ºC (optimum 30 ºC). Allantoin,
urate or NaCl are not required for growth.
Isolated from feces (poultry) and soil.
Unknown.
  1. N.A. Logan and P. De Vos, 2009. Genus I.  Bacillus  Cohn 1872. In: (Eds.) P.D. Vos, G. Garrity, D. Jones, N.R. Krieg, W. Ludwig, F.
    A. Rainey, K.-H. Schleifer, W.B. Whitman. Bergey’s Manual of Systematic Bacteriology, Volume 3: The Firmicutes, Springer, 21-127.
Positive results for beta-galactosidase, hydrolysis of urea, hydrolysis of gelatin,
oxidase, hydrolysis of casein, hydrolysis of starch, citrate utilization, hydrolysis of
Tween 20, acid production from: D-glucose, D-mannitol, glycerol, fructose, galactose,
lactose, maltose, raffinose, sucrose & trehalose.

Negative results for deamination of phenylalanine, hydrolysis of esculin, hydrolysis of hippurate, egg yolk reaction, indole production,   
nitrate reduction, Voges-Proskauer reaction, degradation of tyrosine, acid production from: L-arabinose, adonitol, D- cellobiose,
dulcitol, erythritol, D-mannose, rhamnose, sorbitol, D-xylose & L-xylose.

Variable results for hydrolysis of Tween 80, meso-inositol & salicin acidification.
(c) Costin Stoica
Bacillus flexus
Antibiogram
Encyclopedia
Culture media
Biochemical tests
Stainings
Images
Articles
Identification
Software
R E G N U M
PROKARYOTAE
Previous page
Back