Xin Cheng (IMAGE) University of Bern Caption Co-first author of the study and former PhD student at the Institute of Plant Sciences, University of Bern Credit © Courtesy of X. Cheng 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.