Wild Type Roots (IMAGE) Aarhus University Caption Upper panel: Wild type roots form nodules whether or not they are transgenic (the latter are marked by green fluorescence). Lower panel: Downregulation of miR2111 in transgenic roots (marked by green fluorescence) leads to reduced symbiosis. Nitrogen-fixing nodules (red fluorescence) preferentially form on non-transgenic roots that have normal miR2111 activity. Credit Katharina Markmann Usage Restrictions Image may be used only to illustrate the research described in the accompanying release. 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.