Corn Plant Colors (IMAGE) Penn State Caption Researchers believe the mystery gene that triggers the mutant red pigments in corn may be a "master regulator" responsible for an over-accumulation of sugars in the leaves and an increase in a natural insecticide in the silk. Credit Surinder Chopra Research Group/Penn State Usage Restrictions Non commercial use only License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.