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. 2018 Nov 7;7(4):98. doi: 10.3390/plants7040098

Figure 2.

Figure 2

Flavonoid biofortification by metabolic engineering strategies through the use of structural (blue arrow on the right of the boxes) or regulatory genes’ (green arrow on the left of the boxes) over-expression (OE). The scheme reports the main genes targets studied for flavonoids improvement in horticultural species.