EXO1 and infection: Chua et al. [27] reported the important cellular functions of Woronin bodies during the pathogenic phase of the rice blast fungus Magnaporthe grisea. They showed that mutation of the Hex1 gene in M. grisea leads to morphological and functional defects in the appressoria (infection structures) and delays host penetration; it subsequently disrupts invasive hyphal growth in planta and thus reduces pathogenicity.