Figure 4. The total number of up- and down-regulated metabolites in leaves of (a) Geranium pratense, (b)Leucanthemum vulgare, and (c) Ranunculus acris control and herbivore-induced plants grown in microcosms with different neighbors (PPI) or different soil legacies (PSI). The number depicted is in comparison to the monoculture diversity/soil legacy level. Data collected in control plants are displayed in light red (up) and dark red (down). Data collected in induced plants are displayed in grey (up) and black (down). Induced plants were infested with Spodoptera exigualarvae for 7 days prior to sampling. Abbreviations: PPI – plant-plant interaction experiment; PSI – plant-soil interaction experiment.