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Folia Microbiologica

, Volume 26, Issue 5, pp 364–369 | Cite as

Bacillusstearothermophilus from Saudi Arabian soils

  • A. H. Abu-Zinada
  • A. Hossain
  • H. I. Yonis
  • S. H. Elwan
Article

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.

Keywords

Amylase Optimum Growth Temperature Thermophilic Bacterium Desert Soil Bacillus Stearothermophilus 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. Abu-Zinada A.H., EL-Huseiny T.M.: Seasonal variation of soil microflora and their activities in Riyadh region, Saudi Arabia. I. Algae.Bull.Fac.Sci.Riyadh Univ. 7, 17 (1975).Google Scholar
  2. Black C.A.:Methods of Soil Analysis. Amer.Soc.Agr., Inc. Madison, Wisconsin (USA) 1965.Google Scholar
  3. Brock T.D., Freeze H.:Thermus acquaticus gen. n. and sp.n., a non sporulating extreme thermophile.J.Bacteriol. 98, 289 (1969).PubMedCrossRefGoogle Scholar
  4. Rrook T.D., Boylen L.K.: Presence of thermophilic bacteria in laundry and domestic hot-water heaters.App;.Microbiol. 25, 72 (1973).Google Scholar
  5. Brock T.D., Edwards M.R.: Fine structure ofThermus aquaticus, an extreme thermophile.J. Bacteriol. 104, 509 (1970).PubMedGoogle Scholar
  6. Bunt J.S., Roviba A.D.: The effect of temperature and heat treatment on soil metabolism.J.Soil Sci. 6, 129 (1955).CrossRefGoogle Scholar
  7. Deoryse E., Glandsdorff M., Pierard A.: A comparative analysis of extreme thermophilic bacteria belonging to the genusThermus.Arch. Microbiol. 117, 189 (1978).CrossRefGoogle Scholar
  8. Harrigan W.F., Mc Cance M.E.:Laboratory Methods in Microbiology. Academic Press, London 1966.Google Scholar
  9. Loew H.A., Webley D.M.: The bacteriology of the root region of the plant grown under controlled spot culture conditions.J.Appl.Bact. 22, 216 (1959).Google Scholar
  10. Pfeuller S.L., Elliot W.H.: The extracellular α-amylase ofBacillus stearothermophilus.J.Biol. Chem. 244, 48 (1969).Google Scholar

Copyright information

© Institute of Microbiology, Academy of Sciences of the Czech Republic 1981

Authors and Affiliations

  • A. H. Abu-Zinada
    • 1
  • A. Hossain
    • 1
  • H. I. Yonis
    • 1
  • S. H. Elwan
    • 1
  1. 1.Department of Botany, College of ScienceUniversity of RiyadhRiyadhSaudi Arabia

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