European Journal of Plant Pathology

, Volume 101, Issue 5, pp 527–533 | Cite as

Inhibition by aluminum of mycelial growth and of sporangial production and germination inPhytophthora infestans

  • D. Andrivon
Research Articles


Mycelial growth on clarified V8 agar of the potato late blight pathogenPhytophthora infestans was inhibited when either aluminum chloride (AlCl3, 6 H2O) or aluminum sulfate (Al2(SO4)3, 18 H2O) was added to the culture medium at concentrations of 2.5–100 mg.l−1 Al3+. Toxicity of Al3+ varied among the fiveP. infestans isolates tested, but toxicity of sulfate and chloride salts was similar for a given isolate. Overall sporangial production was affected in all five isolates by both Al3+ forms. Al3+ also decreased sporangial germination at concentrations equal to or greater than 10 mg.l−1 in two isolates. These data support the hypothesis of aluminum toxicity as a major factor in soil suppressiveness toP. infestans.

Key words

aluminum chloride aluminum sulfate toxicity potato late blight 


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Copyright information

© Kluwer Academic Publishers 1995

Authors and Affiliations

  • D. Andrivon
    • 1
  1. 1.Station de Pathologie VégétaleINRALe RheuFrance

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