Bacillus ruris
Taxonomy
Morphology
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Phylum Firmicutes, Class Bacilli, Order Bacillales, Family Bacillaceae, Genus Bacillus, Bacillus ruris  Heyndrickx, Scheldeman,
Forsyth, Lebbe, Rodriguez-Diaz, Logan and De Vos  2004.
Gram-positive, rods and coccoid rods, 0.5-0.8 x 1.0-2.0 µm, motile. Produce central /
paracentral / subterminal, ellipsoidal endospores in swollen sporangia.
Colonies are creamy / off-white with opaque center, smooth, flat, 1 mm in diameter
after 2 days on TSA; the margins are usually irregular. Alkalitolerant. Grow at pH 8-11  
and at 30-40 ºC (no growth at 50 ºC). Aerobic; facultatively anaerobic.
Isolated from raw milk and feed concentrate from dairy farms.
Undetermined.
  1. Heyndrickx M., Scheldeman P., Forsyth G., Lebbe L., Rodriguez-Diaz M., Logan N.A. and De Vos P. 2004. Bacillus ruris sp. nov.,
    from dairy farms . IJSEM 55, 2551-2554.
Positive results for beta-galactosidase, nitrate reduction,  hydrolysis of esculin,
catalase, acid production from: L-arabinose, N-acetyl-D-glucosamine, D-glucose,
D-mannose, starch, fructose, lactose, melibiose, melezitose, sucrose, ribose,
trehalose & D-xylose.

Negative results for arginine dihydrolase, lysine decarboxylase, ornithine decarboxylase, hydrolysis of urea, hydrolysis of gelatin,
indole production, H
2S production, hydrolysis of casein, Voges-Proskauer reaction, citrate utilization, acid production from: adonitol,
amygdalin, D-arabinose, D- or L-arabitol, arbutin, dulcitol, erythritol, D- or L-fucose, glycerol, methyl beta-xyloside beta-gentiobiose,  
gluconate, myo-inositol, 2- or 5-ketogluconate, lyxose, rhamnose , sorbitol, sorbose & xylitol.

Variable results for cellobiose, glycogen, galactose, D-mannitol, salicin, inulin, maltose & raffinose.
(c) Costin Stoica
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