The roots of olive cultivars differing in tolerance to Verticillium dahliae show quantitative differences in phenolic and triterpenic profiles Cardoni, Martina Olmo García, Lucía Serrano García, Irene Carrasco Pancorbo, Alegría Mercado Blanco, Jesús Lignans Olea europaea Oleuropein Oleuropein aglycone Elenolic acid glucoside Pentacyclic triterpenes This work was supported by the grants PID2019-106283RB-I00, BES-2017-081269 and FPU19/00700 of the Spanish Ministerio de Ciencia, Innovacion y Universidades (MICIU)/Agencia Estatal de Investigacion (AEI), and the grant RYC2021-032996-I funded by MCIN/AEI/10.13039/501100011033 and by "European Union NextGenerationEU/PRTR". This research was partially funded by FEDER/Junta de Andalucia-Consejeria de Conocimiento, Investigacion y Universidad, Junta de Andalucia Transformacion Economica, Industria, Conocimiento y Universidades, Proyecto P20_00263; and FEDER/Junta de Andalucia-Consejeria de Economia y Conocimiento, Proyecto B-AGR-416-UGR18. Verticillium wilt of olive (VWO), caused by Verticillium dahliae, is a major concern in many olive- growing countries. An efficient VWO control measure is the use of tolerant/resistant cultivars. Low information is available about olive secondary metabolites and its relationship with VWO tolerance. In this study, a comprehensive metabolic profiling of the roots of six olive cultivars differing in their level of tolerance/susceptibility to VWO was addressed. Potential changes in the metabolite profiles due to the presence of the pathogen were also assessed. A strong relationship between the quantitative basal composition of the root secondary metabolic profile and VWO tolerance/susceptibility of olive varieties was found. Tolerant cultivars showed higher content of secoiridoids, while the susceptible ones presented greater amounts of verbascoside and methoxypinoresinol glucoside. The presence of V. dahliae only caused few significant variations mostly restricted to the earliest times after inoculation. Thus, a rapid activation of biochemical- based root defense mechanisms was observed. 2023-06-13T08:15:00Z 2023-06-13T08:15:00Z 2023-05-02 journal article Martina Cardoni, Lucía Olmo-García, Irene Serrano-García, Alegría Carrasco- Pancorbo & Jesús Mercado-Blanco (2023) The roots of olive cultivars differing in tolerance to Verticillium dahliae show quantitative differences in phenolic and triterpenic profiles, Journal of Plant Interactions, 18:1, 2206840, [DOI: 10.1080/17429145.2023.2206840] https://hdl.handle.net/10481/82380 10.1080/17429145.2023.2206840 eng info:eu-repo/grantAgreement/EC/NextGenerationEU/PRTR RYC2021-032996-I http://creativecommons.org/licenses/by-nc/4.0/ open access Atribución-NoComercial 4.0 Internacional Taylor & Francis