Response of Tomato to <I>Fusarium</I> Infection
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Abstract
Examination of the vascular exudate, leaves and stems of tomato seedlings cut at the base of the stem 1 or 2 weeks after they were inoculated with Fusarium oxysporum f. sp. lycopersici, and with two formae speciales non-pathogenic to tomato was undertaken. Some difference between treatment were noted in the amount, pH and protein concentration of vascular exudate. SDS-PAGE of leaf proteins extracted at pH 3.0 from plants two weeks after inoculation showed some differences in the protein profile especially in the leaf extract of lycopersici-inoculated plants, in which a new band (ca. 8kDa) appeared. The results of this study suggest that among the wide range of metabolic changes which occur in plants inoculated with either a pathogen or non-pathogen, some differences exist depending on the type of interaction. Some of the changes found in this study may be useful markers for the study of the induction of resistance.
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References
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