Phylum Firmicutes, Class Bacilli, Order Bacillales, Family Bacillaceae, Genus Bacillus, Bacillus fastidiosus den Dooren de Jong
Motile rods, 1.3 µm in diameter, centrally / paracentrally / subterminally / terminally,
ellipsoidal endospores in unswollen sporangia.
Colonies on 1% uric acid agar become opaque and are usually nonpigmented but
may become yellowish; margins are often ragged and have hair-like outgrowths, or
the colonies may be rhizoid. Colonies are surrounded by zones of clearing and the
reaction becomes strongly alkaline.
Aerobic. Grow at pH 7 - 9 ; no growth at pH 5-6. Grow in 2% and 5% NaCl; no growth
in 7% and10% NaCl. NaCl is not required for growth. Growth temperature 10 - 40 ºC.
Allantoin & urate are required for growth.
Isolated from soil and poultry litter.
- 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.
Positive results for hydrolysis of urea, oxidase & catalase.
Negative results for degradation of tyrosine, deamination of phenylalanine, hydrolysis of gelatin, egg yolk reaction, nitrate
reduction,citrate utilization, hydrolysis of casein & hydrolysis of starch.
(c) Costin Stoica