Spatial/temporal expression of eight phenylpropanoid, lignin and flavonoid pathway genes during fruit development. Gene abbreviations are indicated beneath an artificial rendering of the dissected fruit development series. Outer section represents exocarp (skin), middle section is mesocarp (flesh) and inner portion is endocarp (stone). No expression data was obtained for the seed which is represented in black. Fruit collection times are shown at top as days after bloom (DAB). Normalized relative expression values are indicated by a sliding colour scale. (A) Highest expression levels are shown in red while lowest expression values are white. (B) Actual relative expression values are graphed for each tissue section: endocarp (red), mesocarp (blue), exocarp (green). Y-axis is relative expression value based on a standard dilution curve. X-axis values are DAB.