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.