Red-leaf lettuce gets its color from anthocyanins, plant pigments known for their antioxidant properties. These compounds are produced through the flavonoid biosynthesis pathway, which begins with the amino acid phenylalanine and generates a range of plant metabolites before producing anthocyanins. In this study, researchers used genome editing to inactivate the gene responsible for dihydroflavonol 4-reductase, an enzyme that controls a key step…
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