Powdery Mildew Infection (IMAGE) Washington University in St. Louis Caption Powdery mildew infection is a big problem for crops and other plants worldwide. An innovative study shows that wild plants infected early in life are more vulnerable to subsequent disease. The research from biologist Rachel Penczykowski in Arts & Sciences is published Aug. 31, 2020, in Nature Ecology & Evolution. (Photo: Penczykowski lab) Credit Penczykowski lab, Washington University in St. Louis Usage Restrictions For editorial purposes 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.