Western Corn Rootworm (image) Max Planck Institute for Chemical Ecology Caption The Western corn rootworm (insert) is a devastating pest of maize roots. By emitting the volatile compound E-beta-caryophyllene in response to rootworm feeding, maize plants naturally attract insect-killing nematodes. Using genetic transformation, the signal was restored in an American line and in field tests it was shown that this dramatically increased the protection that the plants received from the nematodes. Credit Matthias Held and Sergio Rasmann, University of Neuchâtel, Switzerland Usage Restrictions None 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.