On rice (Oryza sativa L.), more than 70 diseases caused by fungi, bacteria, viruses, and nematodes have been listed. Among them, the blast disease Magnaporthe oryzae B. Couch (syn. Pyricularia Cavara) seriously threatens global production worldwide. Effective management strategies such as use of resistant cultivars application fungicides individually cannot sustainably contain disease, because ...

The phylogenetic relationships of Pyricularia species and species from related genera were established from sequences of the internal transcribed spacer ribosomal RNA gene. Phylogenetic analysis disclosed a consistent correlation with spore morphology. Most Pyricularia species studied, and two species of Dactylaria that have obpyriform conidia, fell within the Magnaporthaceae cluster with high ...