A Potential Defense Mechanism of Tomato Against the Late Blight Disease is Suppressed by Germinating Sporangia-derived Substances from Phytophthora infestans |
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| Authors: | E Storti D Pelucchini S Tegli A Scala |
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| Institution: | Dipartimento di Biologia Animale e Genetica, Universita di Firenze, Firenze, Italy |
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| Abstract: | Hypersensitive browning, host cell death and phytoalexins (rishitin) synthesis in both callus cultures and cotyledons have been observed in a susceptible tomato cultivar following treatment with high molecular weight cell wall components from Phytophthora infestans race 1B. The growth of the pathogen was restricted on both elicited differentiated and undifferentiated tomato tissues. Subtance(s) released by germinating sporangia, but not by the mycelium, suppressed the hypersensitive reaction. |
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