Molecular Mapping of Stem Rust Resistance Loci Effective Against the Ug99 Race Group of the Stem Rust Pathogen and Validation of a Single Nucleotide Polymorphism Marker Linked to Stem Rust Resistance Gene Sr28
Wheat landrace PI 177906 has seedling resistance to stem rust caused by Puccinia graminis f. sp. tritici races TTKSK, TTKST, and BCCBC and field resistance to the Ug99 race group. Parents, 140 recombinant inbred lines, and 138 double haploid (DH) lines were evaluated for seedling resistance to races TTKSK and BCCBC. Parents and the DH population were evaluated for field...
E. M. Babiker, T. C. Gordon, S. Chao, M. N. Rouse, R. Wanyera, M. Acevedo, G. Brown-Guedira, and J. M. Bonman
Phytopathology · Volume 107 · Issue 2 · 2017
Comparative Analysis Highlights Variable Genome Content of Wheat Rusts and Divergence of the Mating Loci
Three members of the Puccinia genus, P. triticina (Pt), P. striiformis f.sp. tritici (Pst), and P. graminis f.sp. tritici (Pgt), cause the most common and often most significant foliar diseases of wheat. While similar in biology and life cycle, each species is uniquely adapted and specialized. The genomes of ...
Christina A. Cuomo, Guus Bakkeren, Hala Badr Khalil, Vinay Panwar, David Joly, Rob Linning, Sharadha Sakthikumar, Xiao Song, Xian Adiconis, Lin Fan, Jonathan M. Goldberg, Joshua Z. Levin, Sarah Young, Qiandong Zeng, Yehoshua Anikster, Myron Bruce, Meinan Wang, Chuntao Yin, Brent McCallum, Les J. Szabo, Scot Hulbert, Xiaming Chen, John P. Fellers
G3 · Volume 7 · Issue 2 · 2017
Identification and validation of single nucleotide polymorphic markers linked to Ug99 stem rust resistance in spring wheat
Wheat stem rust (Puccinia graminis f. sp. tritici Eriks. and E. Henn.) is one of the most destructive diseases world-wide. Races belonging to Ug99 (or TTKSK) continue to cause crop losses in East Africa and threaten global wheat production. Developing and deploying wheat varieties with multiple race-specific genes or complex adult plant resistance is necessary to achieve...
Long-Xi Yu, Shiaoman Chao, Ravi P. Singh, Mark E. Sorrells
PLoS One · 2017
Speed breeding for multiple disease resistance in barley
To respond faster to the changing climate, evolving pathogens and to feed a global population of 9–10 billion by 2050, plant breeders are exploring more efficient crop improvement strategies. In this study, we applied novel methodology for rapid trait introgression to the European two-rowed barley cultivar Scarlett. Scarlett is widely-grown in Argentina and is preferred for malting and brewing...
Lee T. Hickey, Silvia E. Germán, Silvia A. Pereyra, Juan E. Diaz, Laura A. Ziems, Ryan A. Fowler, Greg J. Platz, Jerome D. Franckowiak, Mark J. Dieters
Euphytica · Volume 213 · Issue 64 · 2017
Mining Vavilov’s Treasure Chest of Wheat Diversity for Adult Plant Resistance to Puccinia triticina
Leaf rust (LR) caused by Puccinia triticina, is among the most important diseases of wheat (Triticum aestivum L.) crops globally. Deployment of cultivars incorporating genetic resistance, such as adult plant resistance (APR) or all-stage resistance, is considered the most sustainable control method. APR is preferred for durability because it places lower selection pressure on the...
Riaz, A.; Athiyannan, N.; Periyannan, S.; Afanasenko, O.; Mitrofanova, O.; Aitken, E. A. B.; Lagudah, E.; Hickey, L. T.
Plant Disease · Volume 101 · Issue 2 · 2017
Genetic mapping of stem rust resistance to Puccinia graminis f. sp. tritici race TRTTF in the Canadian wheat cultivar harvest
Stem rust, caused by Puccinia graminis f. sp. tritici, is a destructive disease of wheat that can be controlled by deploying effective stem rust resistance (Sr) genes. Highly virulent races of P. graminis f. sp. tritici in Africa have been detected and characterized. These include race TRTTF and the Ug99 group of races such as TTKSK. Several Canadian and U.S. spring...
Hiebert, C. W.; Rouse, M. N.; Jayaveeramuthu Nirmala; Fetch, T.
Phytopathology · Volume 107 · Issue 2 · 2017
Variation in Puccinia graminis f. sp tritici detected on wheat and triticale in South Africa from 2009 to 2013
To determine phenotypic diversity of Puccinia graminis f. sp. tritici (Pgt), the cause of stem rust of wheat, samples of infected stems were collected during 2009–2013 from commercial wheat fields, experimental plots, and rust trap nurseries across major wheat growing regions of South Africa (SA). Pgt races were identified based on their avirulence/virulence profiles...
T.G. Terefe, B. Visser, Z.A. Pretorius
Crop Protection · Volume 86 · 2016
Genetic mapping of SrCad and SNP marker development for marker-assisted selection of Ug99 stem rust resistance in wheat
Wheat stem rust, caused by Puccinia graminis f. sp. tritici, is a devastating disease of wheat worldwide. Development of cultivars with effective resistance has been the primary means to control this disease, but the appearance of new virulent strains such as Ug99 has rendered most wheat varieties vulnerable. The stem...
Kassa, M. T.; You, F. M.; Fetch, T. G. ; Fobert, P.; Sharpe, A ; Pozniak, C. J.; Menzies, J. G.; Jordan, M. C.; Humphreys, G.; Zhu TingTing; Luo MingCheng; McCartney, C. A.; Hiebert, C. W
Theoretical and Applied Genetics · Volume 129 · Issue 7 · 2016
Wheat stem rust disease incidence and severity associated with farming practices in the Central Rift Valley of Kenya
Stem rust (Puccinia graminis f.sp.tritici) is a major disease of wheat that occurs more in the main wheat growing regions of Kenya. The objective of this study was to assess the incidence and severity of wheat stem rust during the 2015 growing season. A survey was conducted in Mau-Narok, Njoro and Kabatini regions. During the survey work, 149 small scale wheat growers’ fields were assessed....
Beatrice Nafula Tenge, Pascal Peter Okwiri Ojwang, Daniel Otaye, Maurice Edwards Oyoo
African Journal of Agriculture Research · Volume 11 · Issue 29 · 2016
Markers Linked to Wheat Stem Rust Resistance Gene Sr11 Effective to Puccinia graminis f. sp. tritici Race TKTTF
Wheat stem rust, caused by Puccinia graminis f. sp. tritici, can cause severe yield losses on susceptible wheat varieties and cultivars. Although stem rust can be controlled by the use of genetic resistance, population dynamics of P. graminis f. sp. tritici can frequently lead to defeat of wheat stem rust resistance genes. P. graminis f. sp. tritici...
Jayaveeramuthu Nirmala, Shiaoman Chao, Pablo Olivera, Ebrahiem M. Babiker, Bekele Abeyo, Zerihun Tadesse, Muhammad Imtiaz, Luther Talbert, Nancy K. Blake, Eduard Akhunov, Michael O. Pumphrey, Yue Jin, and Matthew N. Rouse
Phytopathology · Volume 106 · Issue 11 · 2016