Seasonal Variation of Plant Defense Inductor Ellagitannins in Strawberry Leaves under Field Conditions for Phytosanitary Technological Applications
- Grellet Bournonville, Carlos Froilan
- Di Peto, Pía de Los Ángeles
- Cerviño Dowling, Ana María
- Castagnaro, Atilio Pedro
- Schmeda Hirschmann, Guillermo
- Diaz Ricci, Juan Carlos
- Mamaní, Alicia I.
- Filippone, María Paula
DOIAbstract
Many natural compounds can activate the plant immunity, and for this reason, they have attracted special interest in crop disease management. Previously, we isolated from strawberry leaves an ellagitannin (HeT), which elicits plant defense responses. In this research, we investigated bioactive compounds from field-collected strawberry leaves capable of inducing defense responses in Arabidopsis thaliana against a bacterial pathogen. Methanolic extracts of strawberry leaves sampled at different months were obtained and compared. The highest content of total soluble phenolic compounds was found in the methanolic extracts of leaves sampled in December (DME). The defense response induced in A. thaliana by DME was attributed to two ellagitannins,...
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