according to the Food and Agriculture Organization of the United Nations. For example, the golden rice with more beta-carotene has too much of a pigment called xanthophylls, and the rice with less glutelin has more of the protein prolamin, which can be an allergen.
Some farmers have expressed concerns about the crossover of genetically modified plants to their crops. The winds can blow pollen from genetically modified plants into organic crops, compromising their status as unmodified.