Rice leaf infected by Xoo (IMAGE) Heinrich-Heine University Duesseldorf Caption Close-up of a rice leaf infected by Xoo. The bacterium migrates through the leaf and causes the typical lesions. Credit Mohammed Mkuya, Rosemary Murori Usage Restrictions No restrictions. License Public Domain 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.