Figure 1. Allocation of constitutive and induced chemical defenses across different pine parts.

Concentration of non-volatile resin in (a) the stem and (b) the needles, and total phenolics in (c) the stem and (d) the needles across three parts of the plants (basal, middle and apical upper part) in control (constitutive, white bars) and methyl-jasmonate (MJ) induced (black bars) P. radiata juveniles. Plants were destructively sampled 15 days after application of MJ. Bars are means ± s.e.m. (N = 36). Asterisks indicate significant differences within each plant part due to MJ-induction at P<0.05 (*), P<0.01 (**) and P<0.001 (***).