Metabolite profiling of <i>Solanum tuberosum</i> reveals a differential response to <i>Phytophthora infestans</i> dependent on host resistance and pathogen isolate

The genetic basis of the resistance potatoes to Phytophthora infestans is well-studied. Plant P. genetically controlled, and secondary metabolites play a role, but themselves (e.g., phenylpropanoids) are poorly understood. This study aimed characterize effects two isolates host on metabolite expression in potato plants. To do this, phenylpropanoid pathway, chlorogenic acid, flavonoids, salicylic acid jasmonic elicitors were characterized. late blight-susceptible cultivar (Jutlandia) responded both with changes levels compounds early whereas response resistant (Toluca) occurred later pathway was more marked case A2 mating-type isolate. results reveal important differences role metabolism suggest that different phenylpropanoids affected depending isolate host's susceptibility infestans.