The flavonoid biosynthetic pathway in Arabidopsis: Structural and genetic diversity

► In Arabidopsis thaliana, at least 54 flavonoid molecules are found. ► Scaffold structures include kaempferol, quercetin and isorhamnetin. ► The chemical diversity of flavonoids increases by tailoring reactions. ► Genes for flavonoid biosynthesis were extensively characterized by functional genomic efforts. ► Structural and genetic diversity of flavonoids in Arabidopsis are discussed.