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Rice blast disease, caused by the filamentous fungus Pyricularia oryzae, is one of the most destructive diseases in rice worldwide. Breeding of resistant rice cultivars remains a cost‐effective and environment‐friendly means for controlling blast disease, but the resistance tends to break down over time because of the pathogen's rapid adaptation. In this study, AVRPiz‐t gene sequences of 46 rice blast...
Genetic variation of the rice blast (Pyricularia oryzae) population in Thailand was investigated based on the nucleotide sequence of three avirulence genes, AVR‐Pi9, AVR‐Pik, and AVR‐Pita1. Sixty rice blast isolates were collected from rice‐growing areas around Thailand. Gene‐specific primers were used to amplify these AVR genes and AVR‐Pi9, AVR‐Pik, and AVR‐Pita1 were detected in 60, 57, and 23 isolates,...
Rice blast fungus, Magnaporthe oryzae, causes rice blast disease leading to the reduction of rice yield. Utilization of rice blast resistant cultivar is one of efficient ways to cope with this disease. The genetic diversity of rice blast is of great importance as it indicates the genotype of rice blast isolates in a population of epidemic area and reveals the dynamics of genotype change over time...
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