Molecular Brace (VIDEO) Institute for Basic Science This video is under embargo. Please login to access this video. To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Caption A molecular brace made of lignin plays a crucial role at the detachment site where petals and fruits leave a tree. Two or three layers of honeycomb-structured lignin embrace the cells which are going to be shed from the plant (secession cells). Lignin act as a brace around the secession cells to localize cell wall breakdown and spatially restrict the detaching cells. Credit Elsevier Inc. Usage Restrictions None 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.