Green plant root (VIDEO) Salk Institute This video is under embargo. Please login to access this video. Caption Arabidopsis thaliana root tips containing a fluorescent reporter gene for ethylene signaling upon treatment with mebendazole, whose activity activates the ethylene signaling pathway. Credit Salk Institute Usage Restrictions With credit and related coverage License Original 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.