Graphical Summary (IMAGE) American Phytopathological Society Caption Non-technical graphical summary, designed by Dr. Amelia H. Lovelace Credit Dr. Amelia H. Lovelace Usage Restrictions Publish with article, with credit 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.