Fig. 2

General overview of the impact of Trichoderma harzianum T22 inoculation, Nezara viridula feeding and tissue location on the metabolome of sweet pepper leaves (n = 5). For both T. harzianum-inoculated plants (T, red) and non-inoculated control plants (C, green), one leaf was enclosed in a mesh bag (local leaf), and infested with ten 3rd instar N. virdula nymphs (D (damaged), filled symbols) or non-infested (U (undamaged), empty symbols). One week later, local leaves (Loc, dots) and distant leaves (Dis, squares) were harvested, and the metabolic profile was analysed. (a) Principal component analysis (PCA) ordination plot of the metabolomes of all leaf samples. (b) PCA ordination plot of only the local leaf samples