The roots of olive cultivars differing in tolerance to <i>Verticillium dahliae</i> show quantitative differences in phenolic and triterpenic profiles

Verticillium wilt of olive (VWO), caused by dahliae, is a major concern in many olive-growing countries. An efficient VWO control measure the use tolerant/resistant cultivars. Low information available about secondary metabolites and its relationship with tolerance. In this study, comprehensive metabolic profiling roots six cultivars differing their level tolerance/susceptibility to was addressed. Potential changes metabolite profiles due presence pathogen were also assessed. A strong between quantitative basal composition root profile varieties found. Tolerant showed higher content secoiridoids, while susceptible ones presented greater amounts verbascoside methoxypinoresinol glucoside. The V. dahliae only few significant variations mostly restricted earliest times after inoculation. Thus, rapid activation biochemical-based defense mechanisms observed.