Bacillus amyloliquefaciens
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Firmicutes, Class Bacilli, Order Bacillales, Family Bacillaceae, Genus Bacillus, B. amyloliquefaciens - 2 subspecies:
B. amyloliquefaciens subsp. amyloliquefaciens and
B. amyloliquefaciens subsp. plantarum Borriss, Chen, Rueckert, Blom, Becker, Baumgarth, Fan, Pukall, Schumann, Sproer, Junge,
Vater, Puhler and Klenk 2011.
Gram-positive, motile rods, 0.7-0.9 x 1.8-3.0 µm, grouped in chains. Central, para-
central and subterminal, ellipsoidal endospores (0.6-0.8 x 1.0-1.4µm) in unswollen
sporangia.
Aerobe, no anaerobic growth. Optimum pH 7,  NaCl is not required for growth (NaCl
tolerance is 12%). Growth temperature 15-50 ºC, optimum 30-40 ºC.
Allantoin or urate are not required for growth.
Isolated from (+/-desert) soil, brackish sediment and industrial amylase fermentations. Is an important source of alpha-amylase and
protease for industrial applications.
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.
  2. L.T. Wang, F.L. Lee, C.J. Tai and H.P.  Kuo, 2008. Bacillus velezensis is a later heterotypic synonym of Bacillus amyloliquefaciens.
    IJSEM 58,671-675.
  3. R. Borriss, X.H. Chen, C. Rueckert, J. Blom , A. Becker, B. Baumgarth, B. Fan, R. Pukall, P. Schumann, C. Spröer, H. Junge, J.
    Vater, A. Pühler and H.P. Klenk, 2011. Relationship of Bacillus amyloliquefaciens clades associated with strains DSM 7T and
    FZB42T: a proposal for Bacillus amyloliquefaciens subsp. amyloliquefaciens subsp. nov. and Bacillus amyloliquefaciens subsp.
    plantarum subsp. nov. based on complete genome sequence comparisons. IJSEM 61,1786-1801.
Positive results for oxidase, catalase, nitrate reduction, esculin hydrolysis, gelatin
hydrolysis, casein hydrolysis, starch hydrolys,
Tween 40 hydrolysis, Tween 60
hydrolysis, Voges-Proskauer, acid production from: D-glucose, D-mannitol, glycerol,
glycogen, salicin, starch, amygdalin, arbutin, cellobiose, fructose, galactose, beta-
gentibiose, meso-inositol, inulin, maltose, raffinose, ribose, sorbitol, sucrose, D-xylose & aesculin

Negative results for arginine dihydrolase, degradation of tyrosine, deamination of phenylalanine, lysine decarboxylase, ornithine
decarboxylase, hydrolysis of urea, egg yolk reaction, indole production, tryptophan deaminase, acid production from: methyl
beta-xyloside, adonitol, D-arabitol, D-arabinose, L-arabitol, dulcitol, erythritol, D-fucose, L-fucose, 2-ketogluconate, 5-ketogluconate,
lyxose, melezitose, rhamnose, sorbose, xylitol & L-xylose.

Variable results for beta-galactosidase, citrate utilization, hydrolysis of Tween 20, H
2S production, acid production from: L-arabinose
D-xylose, N-acetil-D-glucosamine, lactose, melibiose & trehalose.
(c) Costin Stoica
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