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. 2019 Mar 5;10:232. doi: 10.3389/fpls.2019.00232

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Copyright © 2019 Landa, Pérez, Luaces, Montes-Borrego, Navas-Cortés and Sanz.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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(A) Sparse partial least square-discriminant analysis (PLS-DA) 2D score plot of volatile compounds with odor active values (OAV) > 1 and p-HPEA-EDA and 3,4- DHPEA-EA from oils extracted from olive trees grown in three different soils (L: loam; CL: clay-loam; and, SL: sandy-loam) infected (Vd) and non-infected (control) by D-Verticillium dahliae. Red: control; green: V. dahliae inoculated trees. The model was established using three principal components and explained variance is shown in parentheses. (B) Loadings between the selected PCs. (C) Loading importances of metabolites in the first PLS-DA component. Colored boxes (red: control; green: V. dahliae inoculated trees) indicate relative concentrations of the corresponding metabolite in each group.