Rice Fungus (IMAGE) University of Delaware Caption The rice blast fungus M. oryzae infects rice plants through a structure called an appressorium. It exerts pressure on the plant leaf until it punctures it. Plant scientists at the University of Delaware have found new clues that may lead to effective controls of the devastating disease. Credit UNIVERSITY OF DELAWARE/Bais Laboratory Usage Restrictions Must credit University of Delaware 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.