Taxonomy
Morphology
Cultural characteristics
Biochemical characters
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References
Phylum Firmicutes, Class Bacilli, Order Bacillales, Family Bacillaceae, Genus Bacillus, Bacillus vietnamensis  Noguchi, Uchino,
Shida, Takano, Nakamura and Komagata 2004.
Gram-positive, motile (peritrichous flagella), rods, 0.5-1.0 x 2.0-3.0 µm. Produce
central, ellipsoidal endospores in unswollen sporangia.
Grow on TSA and TSB. Aerobic. Growth temperature 10-50 ºC (optimum 30-40 ºC).
Alkaliphilic, grow in pH 7-10. Moderately halotolerant, grow in 0-15% NaCl media.
Isolated from Vietnamese fish sauce and from the Gulf of Mexico. Grow in the presence of lysozyme.
Undetermined.
  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. H.N.Noguchi, M. Uchino, O. Shida, K. Takano, L.N. Nakamura and K. Komagata, 2004. Bacillus vietnamensis sp. nov., a
    moderately halotolerant, aerobic, endospore-forming bacterium isolated from Vietnamese fish sauce. IJSEM 54, 2117-2120.
Variable results for D-mannose acidification.

Positive results for degradation of tyrosine, beta-galactosidase, hydrolysis of esculin,
hydrolysis of gelatin, oxidase, catalase, hydrolysis of casein, hydrolysis of starch,
hydrolysis of DNA, acid production from: D-fructose, N-acetyl-D-glucosamine,
D-glucose, glycerol, glycogen, inulin, maltose, D-mannitol, ribose, sucrose, starch & D-trehalose.

Negative results for arginine dihydrolase, hydrolysis of urea, indole production, H
2S production, nitrate reduction, citrate utilization,
acid production from: L- or D-arabinose, adonitol, amygdalin, D- or L-arabitol, arbutin, cellobiose, dulcitol, erythritol, D- or L-fucose,
galactose, beta-gentiobiose, gluconate, meso-inositol, 2- or 5-ketogluconate, lactose, lyxose, melezitose, melibiose, raffinose,
rhamnose, salicin, sorbitol, sorbose, methyl beta-xyloside, xylitol, L- or D-xylose.
Bacillus vietnamensis
(c) Costin Stoica
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