Black Roots (IMAGE) Max Planck Institute for Chemical Ecology Caption Typical symptoms are the black roots, which is why the scientists called this disease the "Utah black death." Credit © Rakesh Santhanam, Max Planck Institute for Chemical Ecology, Jena, Germany 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.