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Elicitor-Induced Resistance In Tomato Plants Against Fungal Pathogens: Ultrastructure And Cytochemistry Of The Induced Response, Nicole Benhamou

Scanning Microscopy

The introduction of gold cytochemistry in plant pathology has opened new avenues for accurately localizing molecules thought to play important biological functions in the plant metabolism. In an effort to understand the process associated with the induction of plant disease resistance, we investigated the effect of fungal elicitors on the cellular response of tomato root tissues during attack by Fusarium oxysporum f. sp. radicis-lycopersici, the causal agent of tomato crown and root rot. Chitosan was found to induce marked morphological and ultrastructural changes in the fungus grown in pure culture, including cytoplasm aggregation and abnormal deposition of an amorphous …