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Schematic presentation of salicylic acid and flavonoid biosynthesis. (F3D, flavanone 3-hydroxylase; DFR, dihydroflavonol-4-reductase; CS, chalcone synthase; PAL, phenylalanine ammonia-lyase; FLS, flavonol synthase; F3′H, flavonoid 3′-hydroxylase; F3′5′H, flavonoid 3′,5′-hydroxylase).
