Population genetics of plant pathogens considers the origin, maintenance and distribution of genetic variation under the influence of mutation, gene flow, recombination, genetic drift and selection. Intensive monoculture in modern agriculture creates a best environment for pathogens to colonize, reproduce and transmit. Global trade of agricultural products and germplasm exchange for breeding programme may also facilitate the evolution of plant pathogens. Sustainable disease management programmes need to integrate host resistance, fungicide application, resistance gene deployment and other strategies, such as good sanitation and efficient quarantine.
Keywords: evolutionary plant pathology; population genetics of pathogens; monoculture; resistance gene deployment




