Flavonoid biosynthetic pathway.

<p>A schematic representation of precursors used in the biosynthesis of flavonoids, flavones and flavonols with some important enzymes involved in flavonoid biosynthetic pathway. Abbreviations: ACC = Acetyl-CoA carboxylase;PAL = phenylalanine ammonia lyase; CHS = chalcone synthase and CHI = chalcone isomerase.</p>