<i>Septoria tritici</i> Blotch on Wheat (IMAGE) University of Exeter Caption Septoria tritici blotch (STB), a disease caused by the fungal pathogen Zymoseptoria tritici is devastating wheat crops. Credit University of Exeter 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.