Anthocyanins are naturally occurring pigments ubiquitously present in plants and, as such, part of the human diet. Owing to their biological activity, anthocyanins have beneficial health effects but, unfortunately, are not present in some important crop plants, such as tomatoes. Recently, a 'purple' tomato, highly enriched with anthocyanins, was produced by the ectopic expression of two selected transcription factors from the ornamental flower snapdragon. In addition to being enriched with anthocyanin, these fruits also prolonged the life of cancer-susceptible mice, suggesting that they have additional health-promoting effects.
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