Taxonomy
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Phylum Firmicutes, Class Erysipelotrichia, Order Erysipelothrichales, Family Erysipelotrichaceae, Genus Bulleidia, Bulleidia extructa
Downes, Olsvik, Hiom, Spratt, Cheesman, Olsen, Weightman and Wade 2000. Type species of the genus.
Description is based on a single species isolated.
Gram-positive short rods, 0.5 x 0.8-2.5 µm, occurring singly and in pairs aligned side
by side. Nonspore-forming. Nonmotile.
Colonies are 0.7-0.9 mm in diameter, low convex, opaque, gray to off-white & glossy
after 7 days on fastidious anaerobe agar. Can be isolated on complex media for
anaerobes including blood agar, enriched BHI agar and fastidious anaerobe agar.
Growth in broth media is poor but is stimulated by 0.5% Tween 80 in the presence of
fermentable carbohydrates. Strictly anaerobic. Optimum growth temperature is 30-37
ºC. No growth at 42 ºC.
Isolated from the oral cavity of man, isolated from periodontal pockets and dentoalveolar abscesses. Sensible to vancomycin.
Undetermined.
  1. Wade W.G. and Downes J., 2009. Genus III. Bulleidia  Downes, Olsvik, Hiom, Spratt, Cheesman, Olsen, Weightman and Wade
    2000 . 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, 1307-1309.
  2. Downes J., Olsvik B., Hiom S.J., Spratt D.A., Cheeseman S.L., Olsen I., Weightman A.J. and Wade W.G., 2000. Bulleidia extructa
    gen. nov., sp. nov., isolated from the oral cavity. IJSEM 50, 979-983.
Positive results for arginine dihydrolase, acid production from: glucose & maltose.
Negative results for catalase, esculin hydrolysis, gelatin hydrolysis, H
2S production, indole production, nitrates reduction to nitrites,
urea hydrolysis, acid production from: arabinose, cellobiose, fructose, lactose, mannitol, mannose, melezitose, melibiose,
rhamnose,  raffinose, salicin, sorbitol, sucrose, trehalose & xylose.
Bulleidia extructa
(c) Costin Stoica
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