Friday, 23 October 2015

​R​ice and ​rice blast interactions: From dissection to deployment

An IRRI Seminar

By Bo Zhou
Senior Scientist-Host Plant Resistance
Plant Breeding, Genetics and Biotechnology 

​​29 October 2015
1:15-2:15 p.m.
Havener Auditorium


Rice blast caused by the fungal pathogen Magnaporthe oryzae poses constant constraints to stable rice production. Utilization of host resistance (R) provides the most economical and effective method to tackling rice blast. In addition to host resistance genes, pathogen information is pivotal for the efficient deployment of different R genes for a pathogen population that is regionally diverse and quickly adapted to new R genes. In the past 3 years, the research program on host plant resistance to blast has been implemented in both the host and pathogen sides. Three blast broad-spectrum R genes were identified and their introgression lines generated. The M. oryzae avirulence (AVR) gene, AvrPi9, was characterized by comparative genomics. An AVR gene-based pathogen surveillance tool was developed, providing an alternative way to determine the virulence spectrum. Future challenges and directions for the rice blast program will be discussed in the presentation.

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