Plants produce food: starch and sugars (and a bit of protein). We're not modifying the levels of those. The apple case is about modifying the levels of an enzy

Plants produce food: starch and sugars (and a bit of protein). We're not modifying the levels of those. The apple case is about modifying the levels of an enzyme, polyphenol oxidase [1]. But that is not what plant-eaters are interested in. They're interested in the food in an apple, not some enzyme levels. [1] https://en.wikipedia.org/wiki/Polyphenol_oxidase https://en.wikipedia.org/wiki/Polyphenol_oxidase