Characterisation of interacting genes that condition avirulence and resistance between Phytophthora pathogens and soybean

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Characterisation of interacting genes that condition avirulence and resistance between Phytophthora pathogens and soybean. Plant pathogens from the genus Phytophthora cause severe crop losses in Australia and worldwide. Resistance in host plants is frequently overcome by mutation of avirulence genes in the pathogen to create virulent new races. We will clone and characterise genes from Phytophthora sojae that control virulence and avirulence, and isolate soybean genes whose products interact with the Phytophthora gene products. An understanding of the molecular mechanisms than enable current plant varieties to recognise Phytophthora pathogens leading to resistance or susceptibility will assist the development of novel strategies for durable disease resistance in soybean and other crop plants.