title: Testing Taxonomic Predictivity of Foliar and Tuber Resistance to Phytophthora infestans in Wild Relatives of Potato.
abstract: Potato late blight, caused by the oomycete phytopathogen Phytophthora infestans, is a devastating disease found in potato-growing regions worldwide. Long-term management strategies to control late blight include the incorporation of host resistance to predominant strains. However, due to rapid genetic changes within pathogen populations, rapid and recurring identification and integration of novel host resistance traits is necessary. Wild relatives of potato offer a rich source of desirable traits, including late blight resistance, but screening methods can be time intensive. We tested the ability of taxonomy, ploidy, crossing group, breeding system, and geography to predict the presence of foliar and tuber late blight resistance in wild Solanum spp. Significant variation for resistance to both tuber and foliar late blight was found within and among species but there was no discernable predictive power based on taxonomic series, clade, ploidy, breeding system, elevation, or geographic location. We observed a moderate but significant correlation between tuber and foliar resistance within species. Although previously uncharacterized sources of both foliar and tuber resistance were identified, our study does not support an assumption that taxonomic or geographic data can be used to predict sources of late blight resistance in wild Solanum spp.
authors: First author: All-Russian Institute for Plant Protection, Laboratory of Plant Immunity to Diseases, 3, Podbelsky shosse, St. Petersburg-Pushkin, 196608, Russia; second, third, and fourth authors: United States Department of Agriculture-Agricultural Research Service, Madison, WI, 53726; and second and third authors: Department of Horticulture, University of Wisconsin, Madison 53706.
authors: A
authors: A
authors: Khiutti
authors: First author: All-Russian Institute for Plant Protection, Laboratory of Plant Immunity to Diseases, 3, Podbelsky shosse, St. Petersburg-Pushkin, 196608, Russia; second, third, and fourth authors: United States Department of Agriculture-Agricultural Research Service, Madison, WI, 53726; and second and third authors: Department of Horticulture, University of Wisconsin, Madison 53706.
authors: D M
authors: DM
authors: Spooner
authors: First author: All-Russian Institute for Plant Protection, Laboratory of Plant Immunity to Diseases, 3, Podbelsky shosse, St. Petersburg-Pushkin, 196608, Russia; second, third, and fourth authors: United States Department of Agriculture-Agricultural Research Service, Madison, WI, 53726; and second and third authors: Department of Horticulture, University of Wisconsin, Madison 53706.
authors: S H
authors: SH
authors: Jansky
authors: First author: All-Russian Institute for Plant Protection, Laboratory of Plant Immunity to Diseases, 3, Podbelsky shosse, St. Petersburg-Pushkin, 196608, Russia; second, third, and fourth authors: United States Department of Agriculture-Agricultural Research Service, Madison, WI, 53726; and second and third authors: Department of Horticulture, University of Wisconsin, Madison 53706.
authors: D A
authors: DA
authors: Halterman
mesh_terms: D001947:Breeding; D060467:Disease Resistance; D005843:Geography; D010838:Phytophthora / Q000502:physiology*; D010935:Plant Diseases / Q000276:immunology* / Q000382:microbiology; D018515:Plant Leaves / Q000145:classification / Q000235:genetics / Q000276:immunology*; D035281:Plant Tubers / Q000145:classification / Q000235:genetics / Q000276:immunology*; D018087:Plastids / Q000235:genetics; D011003:Ploidies; D032322:Solanum / Q000145:classification / Q000235:genetics / Q000276:immunology*; D011198:Solanum tuberosum / Q000145:classification / Q000235:genetics / Q000276:immunology; D013045:Species Specificity