Infected Arabidopsis Plants (image) Virginia Tech Share Print E-Mail Caption These are pathogen-infected Arabidopsis plants. Credit John McDowell and Ryan Anderson, Virginia Tech Usage Restrictions Photo maybe be used with the article about the genetic code of the plant pathogen that causes downy mildew disease, or with any coverage of John McDowell's research. Share Print E-Mail 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.