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Phenotypic and Genotypic Characterization of Race TKTTF of Puccinia graminis f. sp. tritici that Caused a Wheat Stem Rust Epidemic in Southern Ethiopia in 2013-14.
Olivera, Pablo; Newcomb, Maria; Szabo, Les J; Rouse, Matthew; Johnson, Jerry; Gale, Samuel; Luster, Douglas G; Hodson, David; Cox, James A; Burgin, Laura; Hort, Matt; Gilligan, Christopher A; Patpour, Mehran; Justesen, Annemarie F; Hovmøller, Mogens S; Woldeab, Getaneh; Hailu, Endale; Hundie, Bekele; Tadesse, Kebede; Pumphrey, Michael; Singh, Ravi P; Jin, Yue.
Affiliation
  • Olivera P; First and second authors: Department of Plant Pathology, University of Minnesota, St. Paul 55108; third, fourth, fifth, sixth, and twenty-second authors: United States Department of Agriculture-Agricultural Research Service (USDA-ARS) Cereal Disease Laboratory, University of Minnesota, St. Paul; sev
  • Newcomb M; First and second authors: Department of Plant Pathology, University of Minnesota, St. Paul 55108; third, fourth, fifth, sixth, and twenty-second authors: United States Department of Agriculture-Agricultural Research Service (USDA-ARS) Cereal Disease Laboratory, University of Minnesota, St. Paul; sev
  • Szabo LJ; First and second authors: Department of Plant Pathology, University of Minnesota, St. Paul 55108; third, fourth, fifth, sixth, and twenty-second authors: United States Department of Agriculture-Agricultural Research Service (USDA-ARS) Cereal Disease Laboratory, University of Minnesota, St. Paul; sev
  • Rouse M; First and second authors: Department of Plant Pathology, University of Minnesota, St. Paul 55108; third, fourth, fifth, sixth, and twenty-second authors: United States Department of Agriculture-Agricultural Research Service (USDA-ARS) Cereal Disease Laboratory, University of Minnesota, St. Paul; sev
  • Johnson J; First and second authors: Department of Plant Pathology, University of Minnesota, St. Paul 55108; third, fourth, fifth, sixth, and twenty-second authors: United States Department of Agriculture-Agricultural Research Service (USDA-ARS) Cereal Disease Laboratory, University of Minnesota, St. Paul; sev
  • Gale S; First and second authors: Department of Plant Pathology, University of Minnesota, St. Paul 55108; third, fourth, fifth, sixth, and twenty-second authors: United States Department of Agriculture-Agricultural Research Service (USDA-ARS) Cereal Disease Laboratory, University of Minnesota, St. Paul; sev
  • Luster DG; First and second authors: Department of Plant Pathology, University of Minnesota, St. Paul 55108; third, fourth, fifth, sixth, and twenty-second authors: United States Department of Agriculture-Agricultural Research Service (USDA-ARS) Cereal Disease Laboratory, University of Minnesota, St. Paul; sev
  • Hodson D; First and second authors: Department of Plant Pathology, University of Minnesota, St. Paul 55108; third, fourth, fifth, sixth, and twenty-second authors: United States Department of Agriculture-Agricultural Research Service (USDA-ARS) Cereal Disease Laboratory, University of Minnesota, St. Paul; sev
  • Cox JA; First and second authors: Department of Plant Pathology, University of Minnesota, St. Paul 55108; third, fourth, fifth, sixth, and twenty-second authors: United States Department of Agriculture-Agricultural Research Service (USDA-ARS) Cereal Disease Laboratory, University of Minnesota, St. Paul; sev
  • Burgin L; First and second authors: Department of Plant Pathology, University of Minnesota, St. Paul 55108; third, fourth, fifth, sixth, and twenty-second authors: United States Department of Agriculture-Agricultural Research Service (USDA-ARS) Cereal Disease Laboratory, University of Minnesota, St. Paul; sev
  • Hort M; First and second authors: Department of Plant Pathology, University of Minnesota, St. Paul 55108; third, fourth, fifth, sixth, and twenty-second authors: United States Department of Agriculture-Agricultural Research Service (USDA-ARS) Cereal Disease Laboratory, University of Minnesota, St. Paul; sev
  • Gilligan CA; First and second authors: Department of Plant Pathology, University of Minnesota, St. Paul 55108; third, fourth, fifth, sixth, and twenty-second authors: United States Department of Agriculture-Agricultural Research Service (USDA-ARS) Cereal Disease Laboratory, University of Minnesota, St. Paul; sev
  • Patpour M; First and second authors: Department of Plant Pathology, University of Minnesota, St. Paul 55108; third, fourth, fifth, sixth, and twenty-second authors: United States Department of Agriculture-Agricultural Research Service (USDA-ARS) Cereal Disease Laboratory, University of Minnesota, St. Paul; sev
  • Justesen AF; First and second authors: Department of Plant Pathology, University of Minnesota, St. Paul 55108; third, fourth, fifth, sixth, and twenty-second authors: United States Department of Agriculture-Agricultural Research Service (USDA-ARS) Cereal Disease Laboratory, University of Minnesota, St. Paul; sev
  • Hovmøller MS; First and second authors: Department of Plant Pathology, University of Minnesota, St. Paul 55108; third, fourth, fifth, sixth, and twenty-second authors: United States Department of Agriculture-Agricultural Research Service (USDA-ARS) Cereal Disease Laboratory, University of Minnesota, St. Paul; sev
  • Woldeab G; First and second authors: Department of Plant Pathology, University of Minnesota, St. Paul 55108; third, fourth, fifth, sixth, and twenty-second authors: United States Department of Agriculture-Agricultural Research Service (USDA-ARS) Cereal Disease Laboratory, University of Minnesota, St. Paul; sev
  • Hailu E; First and second authors: Department of Plant Pathology, University of Minnesota, St. Paul 55108; third, fourth, fifth, sixth, and twenty-second authors: United States Department of Agriculture-Agricultural Research Service (USDA-ARS) Cereal Disease Laboratory, University of Minnesota, St. Paul; sev
  • Hundie B; First and second authors: Department of Plant Pathology, University of Minnesota, St. Paul 55108; third, fourth, fifth, sixth, and twenty-second authors: United States Department of Agriculture-Agricultural Research Service (USDA-ARS) Cereal Disease Laboratory, University of Minnesota, St. Paul; sev
  • Tadesse K; First and second authors: Department of Plant Pathology, University of Minnesota, St. Paul 55108; third, fourth, fifth, sixth, and twenty-second authors: United States Department of Agriculture-Agricultural Research Service (USDA-ARS) Cereal Disease Laboratory, University of Minnesota, St. Paul; sev
  • Pumphrey M; First and second authors: Department of Plant Pathology, University of Minnesota, St. Paul 55108; third, fourth, fifth, sixth, and twenty-second authors: United States Department of Agriculture-Agricultural Research Service (USDA-ARS) Cereal Disease Laboratory, University of Minnesota, St. Paul; sev
  • Singh RP; First and second authors: Department of Plant Pathology, University of Minnesota, St. Paul 55108; third, fourth, fifth, sixth, and twenty-second authors: United States Department of Agriculture-Agricultural Research Service (USDA-ARS) Cereal Disease Laboratory, University of Minnesota, St. Paul; sev
  • Jin Y; First and second authors: Department of Plant Pathology, University of Minnesota, St. Paul 55108; third, fourth, fifth, sixth, and twenty-second authors: United States Department of Agriculture-Agricultural Research Service (USDA-ARS) Cereal Disease Laboratory, University of Minnesota, St. Paul; sev
Phytopathology ; 105(7): 917-28, 2015 Jul.
Article in En | MEDLINE | ID: mdl-25775107
ABSTRACT
A severe stem rust epidemic occurred in southern Ethiopia during November 2013 to January 2014, with yield losses close to 100% on the most widely grown wheat cultivar, 'Digalu'. Sixty-four stem rust samples collected from the regions were analyzed. A meteorological model for airborne spore dispersal was used to identify which regions were most likely to have been infected from postulated sites of initial infection. Based on the analyses of 106 single-pustule isolates derived from these samples, four races of Puccinia graminis f. sp. tritici were identified TKTTF, TTKSK, RRTTF, and JRCQC. Race TKTTF was found to be the primary cause of the epidemic in the southeastern zones of Bale and Arsi. Isolates of race TKTTF were first identified in samples collected in early October 2013 from West Arsi. It was the sole or predominant race in 31 samples collected from Bale and Arsi zones after the stem rust epidemic was established. Race TTKSK was recovered from 15 samples from Bale and Arsi zones at low frequencies. Genotyping indicated that isolates of race TKTTF belongs to a genetic lineage that is different from the Ug99 race group and is composed of two distinct genetic types. Results from evaluation of selected germplasm indicated that some cultivars and breeding lines resistant to the Ug99 race group are susceptible to race TKTTF. Appearance of race TKTTF and the ensuing epidemic underlines the continuing threats and challenges posed by stem rust not only in East Africa but also to wider-scale wheat production.
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Full text: 1 Collection: 01-internacional Database: MEDLINE Main subject: Basidiomycota / Triticum Aspects: Determinantes_sociais_saude Country/Region as subject: Africa Language: En Journal: Phytopathology Journal subject: BOTANICA Year: 2015 Document type: Article
Fulltext
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Full text: 1 Collection: 01-internacional Database: MEDLINE Main subject: Basidiomycota / Triticum Aspects: Determinantes_sociais_saude Country/Region as subject: Africa Language: En Journal: Phytopathology Journal subject: BOTANICA Year: 2015 Document type: Article