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Bacillusstearothermophilus from Saudi Arabian soils

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Abstract

Ten thermophilic Gram-positive bacteria were isolated from various soils of Saudi Arabia. The strains are spore-forming rods belonging to the speciesBacillus stearothermophilus. The cells are motile, strictly aerobic, catalase and oxidase positive. The sporangia appear to be swollen and their position varies from terminal in some to sub-terminal in others. The thermal stability of some enzymes of these bacteria was investigated; extracellular α-amylase appears to be very sensitive to pH and temperature. The ultrastructure of these bacteria shows specific changes in the cell wall when grown at the maximum, minimum and optimum growth temperatures, respectively.

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Authors and Affiliations

  1. Department of Botany, College of Science, University of Riyadh, Riyadh, Saudi Arabia

    A. H. Abu-Zinada, A. Hossain, H. I. Yonis & S. H. Elwan

Authors
  1. A. H. Abu-Zinada
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  2. A. Hossain
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  3. H. I. Yonis
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  4. S. H. Elwan
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Abu-Zinada, A.H., Hossain, A., Yonis, H.I. et al. Bacillusstearothermophilus from Saudi Arabian soils. Folia Microbiol 26, 364–369 (1981). https://doi.org/10.1007/BF02927328

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  • DOI: https://doi.org/10.1007/BF02927328

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