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Phylum Firmicutes, Class Bacilli, Order Bacillales, Family Bacillaceae, Genus Bacillus, Bacillus macyae  Santini, Streimann and
vanden Hoven  2004  Zavarzina, Tourova, Kolganova, Boulygina and Zhilina 2010.
Synonym:
Anaerobacillus  macyae  (Santini, Streimann and vanden Hoven  2004)  Zavarzina, Tourova, Kolganova, Boulygina and
Zhilina 2010. Description is based on a single isolate.
Gram-positive,  0.6 x 2.5-3 µm, motile rods. Produce subterminally, ellipsoidal
endospores in unswollen sporangia
Colonies are  round and white. Strictly anaerobic. Show respiratory growth As (V)
(arsenate) and nitrate as electron acceptors. Grow at ph 7-8.4 and 28-37 ºC. Grow in
0.12% - 3% NaCl.
Isolated from arsenic-contaminated  mud from a gold mine in Bendigo, Victoria, Australia.
Not determined.
  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. J.M. Santini, I.C.A. Streimann and R. N. vanden Hoven, 2004. Bacillus macyae sp. nov., an arsenate-respiring bacterium isolated
    from an Australian gold mine. IJSEM 54, 2241-2244.
Positive results for catalase & nitrate reduction.

Negative results for oxidase & citrate utilization.
(c) Costin Stoica
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