FIGURE 4.

Secondary metabolite response to drought for both leaves and roots. (A) Secondary metabolites, including all measured metabolites (C-based and N-based) for each tissue (from Figure 1). (A.1) Carbon-based metabolites, including flavonoids, phenolics, tannins, terpenoids, and volatiles. (A.2) Nitrogen-based metabolites, including glucosinolates, alkaloids and glycoalkaloids. (B) Breakdown of C-based secondary metabolites for each tissue. Numbers in parentheses represent the number of studies considered. Mean effect sizes are shown with 95% confidence intervals (CIs). Effects are considered significant if their associated CIs do not overlap zero (dashed line) and are illustrated with solid circles.