Introduction of sense constructs of cinnamate 4-hydroxylase (CYP73A24) in transgenic tomato plants shows opposite effects on flux into stem lignin and fruit flavonoids

Overexpression of CYP73A24 led to desirable increases in antioxidant flavonoids in fruit without alteration of the carotenoid background. However many lines showed reduced lignin in stems indicating a complex developmental role for cinnamate 4-hydroxylase.