The defensive arsenal of plant roots (IMAGE) Université de Genève Caption Visualization of suberin (induced toward the root tip on the left) in Arabidopsis thaliana, with an intensity-stained gradient. Credit © UNIGE Usage Restrictions none 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.