Japanese Journal of Phytopathology · 1968 · 33 citations · 0 references
AgriculturePlant BiologyPlant SciencesPlant GeneticsPlant PhysiologyPlant-microbe InteractionsDisease ResistanceDisease Resistance GeneticsPlant Disease ResistancePlant-pathogen InteractionsResistance Gene DiscoveryInterspecific VariationPathogen Resistance GenesPlant Disease Resistance GenesPlant Resistance GenesR Gene InteractionsR Gene-mediated ResistanceResistance Gene-mediated Resistance
Rishitin has been found in tuber tissue of R1-variety of potato plant infected by an incompatible race of Phytophthora infestans. It seems to be qualified as phytoalexin in broad sense. Rishitin like substances were extracted from tubers of the interspecific varieties (Solanum tuberosum×S. demissum) containing one of the other late-blight resistance genes R2, R3, R4 and common variety (Solanum tuberosum) containing the gene r, and identified as rishitin itself. Thus each of r-, R1-, R2-, R3- and R4- varieties can produce rishitin in response to infection by an incompatible race of Phytophthora infestans.