Folia Microbiologica

, Volume 45, Issue 2, pp 153–156 | Cite as

Effect of Al, Co, and Pb ions on growth ofFrankia spp. in a mineral medium

  • W. F. Sayed
  • S. M. Mohaowad
  • M. M. Abd El-Karim


Growth of threeFrankia strains associated with roots ofCasuarina tree, treated with different concentrations of metal ions, was measured as total protein content. One strain was highly resistant to different aluminum ion concentrations up to 10 mmol/L. The other two strains were more sensitive to the higher aluminum concentrations (1.25–10 mmol/L). Growth inhibition by cobalt and lead concentrations varied, depending on the tested strain. Stimulation occurred only at cobalt concentrations of 0.33 and 0.65 mmol/L for one strain.


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Copyright information

© Institute of Microbiology, Academy of Sciences of the Czech Republic 2000

Authors and Affiliations

  • W. F. Sayed
    • 1
  • S. M. Mohaowad
    • 1
  • M. M. Abd El-Karim
    • 1
  1. 1.Department of Botany, Faculty of ScienceSouth Valley UniversityQenaEgypt

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