The rye mildew fungus carries avirulence genes corresponding to wheat genes for resistance to races of the wheat mildew fungus

• Published in: Phytopathology Vol. 85; no. 7; pp. 753 - 756
• Main Authors: MATSUMURA, K, TOSA, Y
• Format: Journal Article
• Language: English
• Published: St. Paul, MN American Phytopathological Society 1995
• Subjects: Biological and medical sciences; disease resistance; erysiphe graminis; Fundamental and applied biological sciences. Psychology; Fungal plant pathogens; gene; genes; genetic variation; genetica; genetics; genetique; pathogenicity; patogenicidad; Phytopathology. Animal pests. Plant and forest protection; pouvoir pathogene; resistance aux maladies; resistencia a la enfermedad; triticum aestivum; variacion genetica; variation genetique; Variation, races, biotypes, parasitic specialization, genetics; variedades; variete; varieties; Fungi; Genetic inheritance; Erysiphe graminis f. tritici; Plant pathogen; Gene; Gene for gene relationship; Phytopathogen resistance; Host agent relation; Ascomycetes; Thallophyta
• ISSN: 0031-949X; 1943-7684
• DOI: 10.1094/Phyto-85-753

The common wheat cultivar Chancellor and its near-isogenic lines carrying resistance genes to Blumeria graminis f. sp. tritici the wheat powdery mildew fungus, were inoculated with 60 F1 cultures derived from a cross between B. graminis f. sp. secalis, the rye powdery mildew fungus, and B. graminis f. sp. tritici. Segregation patterns of avirulent and virulent cultures showed that the F1 population carries avirulence genes corresponding to Pm1, Pm2, Pm3a, Pm3b, Pm3c, and Pmla, resistance genes to races of the wheat mildew fungus. This result indicates that the rye mildew fungus, an inappropriate forma specialis for wheat, carries these avirulence genes.