Oryzae pathotype of Magnaporthe oryzae can cause typical blast disease symptoms on both leaves and spikes of wheat under a growth room condition

Abstract Blast diseases of rice and wheat are known to be caused by the specific pathotypes Magnaporthe oryzae (syn. Pyricularia ), M. Oryzae ( MoO ) Triticum MoT), respectively. Rice blast disease has been seen in Bangladesh from a very ancient time. However, Bangladesh’s first epidemic outbreak was recorded 2016. This study aimed investigate cross-infection reactions MoT growth room condition. Artificial inoculation done at vegetative reproductive phases both plants completely randomized design using virulent isolates . with resulted foliar symptoms typical eye-shaped lesions as well partially bleached or white head plants. On other hand, produced only on leaves spikes wheat. Molecular analyses PCR amplification (with Pot2, MoT3 MoT6099 primers) recently developed rapid detection PCRD strip confirmed presence symptomatic plant samples. Our results demonstrated that pathotype can infect but is unable under same controlled environment Bangladesh. revealed vulnerability an urgent need understand molecular mechanism underlying host-specificity fungus also provided evidence for potential many rice–wheat inter-cropping regions climate change intensifies. A comprehensive needed have better understanding variability virulence infecting inclusion large number crop varieties/genotypes.