2/13/2024 0 Comments Late blight 2012A future challenge will be to combine our accumulated knowledge with that from other scientific fields to develop a disease management approach for late blight.Īkino S, Gotoh K, Nishimura R, Maeda A, Naito S, Ogoshi A (2004) Comparison of Chinese and Japanese A1 isolates of Phytophthora infestans. infestans-derived elicitors induce defensive reactions, including the accumulation of phytoalexins and hypersensitive cell death. Conserved molecules from Phytophthora species such as fatty acids, glucans, and elicitins also act as elicitors in Solanaceae species. These effector proteins induce robust resistance in potato varieties containing R genes, while they suppress resistance in potato varieties lacking R genes. The R genes of potato generally encode receptors that recognize secretory effector (Avr) proteins produced by P. New races rapidly overcome R-gene-mediated resistance. However, R genes provided only transient resistance to late blight. Many varieties carry the R1 gene, whereas others carry R2, R3, and/or R4. tuberosum has been used to transfer late blight resistance. Recurrent backcrossing of Solanum demissum to varieties of S. Resistance to late blight has been an ongoing desire of potato farmers in Japan and elsewhere. infestans from other countries and by domestic changes produced through sexual and asexual propagation. These populations may have been introduced to Japan by the migration of P. infestans have been classified as US-1, JP-1, JP-2, JP-3, and JP-4 based on analyses of DNA polymorphisms. Phytophthora infestans is the causal agent of potato late blight.
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