Potato beelte (IMAGE) Max Planck Institute for Chemical Ecology Caption Colorado potato beetle Leptinotarsa decemlineata on black nightshade (Solanum nigrum). Feeding experiments with black nightshade that lacked GAME15 and wildtype Solanum nigrum plants uncovered the role of steroidal saponins in chemically defending the leaves. Credit Danny Kessler, Max Planck Institute for Chemical Ecology Usage Restrictions Credit must be given to the creator. Adaptations must be shared under the same terms. License CC BY-SA 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.