FIGURE 11.

Ferulate is depleted in the adaxial (bulliform‐containing) cuticle. (a) Total hydroxycinnamic acid (HCA) content of abaxial and adaxial leaf surfaces, extracted and depolymerized from epidermal peels after enzymatic digestion, and measured by GC‐MS. (b) Absolute and (c) Relative content of coumarate and ferulate in abaxial versus adaxial tissues. (d) Ratio of total HCA content to total hydroxy fatty acid (FA) content in abaxial and adaxial tissue. Values are given as means ± SD (n = 4 biological replicates per surface). Statistical analysis used two‐tailed unpaired Student's t‐test, with **p < .01 and ***p < .001