Illustration (IMAGE) University of Bonn Caption The molecule Topless (TPL) normally suppresses auxin signaling (AUX) in the plant. The fungus's five Tip effectors remove this inhibition, allowing the corn cells to grow and divide. Credit © Armin Djamei / University of Bonn Usage Restrictions Please use this image only on connection with the press release. 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.