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Purple Tomatoes and Health - Dr. Cathie Martin

Talking Biotech with Dr. Kevin Folta

00:00

Genetic Engineering of the Purple Tomato

Tomatoes can make purple anthocyanins through all of those enzymes that are naturally in the genome. The only difference with the purple tomatoes is that they don't have the transcription factors that induce the, the enzyme and biosynthetic pathway active in the fruit. So what we did was we added genes encoding these regulators, the switches that switch on and the sign in biosynthesis so that they were switched on at a very late development stage in the fruit, in fruit ripening.

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