Plant species richness elicits changes in the metabolome of grassland species via soil biotic legacy

Species‐rich plant communities can induce unique soil biotic legacy effects through changing the abundance and composition of soil biota. These soil legacy effects can cause feedbacks to influence plant performance. In addition, soil biota can induce (defensive) secondary metabolites in shoots and roots and thus affect plant–herbivore interactions. We hypothesize that plant diversity‐driven soil biotic legacy effects elicit changes in the shoot...