Virulence of Puccinia triticina in Turkey and leaf rust resistance in Turkish wheat cultivars
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Leaf rust caused by Puccinia triticina is a common disease on wheat in the coastal regions of Turkey. Collections of P. triticina from infected wheat leaves were obtained from the main wheat production zones of Turkey in 2009 and 2010. A total of 104 single uredinial isolates were tested for virulence on 20 lines of Thatcher wheat that differ for single leaf rust resistance genes. Forty-four different virulence phenotypes were identified over both years. Four phenotypes were found in both years. Phenotype FHPTQ found in 2009, with virulence to genes Lr2c, Lr3, Lr16, Lr26, Lr3ka, Lr17a, Lr30, LrB, Lr10, Lr14a, Lr18, Lr3bg, and Lr14b, was the most common phenotype at 15.4 % of the total isolates. Forty-three winter and spring wheat cultivars from Turkey were tested as seedlings with 13 different P. triticina virulence phenotypes from Canada, the US and Turkey. The infection types on the cultivars were compared with infection types on the Thatcher near isogenic lines to postulate the presence of seedling leaf rust resistance genes in the cultivars. Resistance genes Lr1, Lr3a, Lr10, Lr14a, Lr17a, Lr20, Lr23, and Lr26 were postulated to be present in the Turkish wheat cultivars. DNA of the wheat cultivars was tested with PCR markers to determine the presence of the adult plant resistance genes Lr34 and Lr37. Marker data indicated the presence of Lr34 in 20 cultivars and Lr37 in three cultivars. Field plot evaluations of the wheat cultivars indicated that no single Lr gene conditioned highly effective leaf rust resistance. Resistant cultivars varied for combinations of seedling and adult plant resistance genes.
KeywordsGene postulation Brown rust
- Aliev, J., Gandilian, P., Naskidashvili, P., & Morgounov, A. (2001). Caucasian Wheat Pool. In A. Bonjean & W. Angus (Eds.), The World Wheat Book A History of Wheat Breeding (pp. 831–848). Paris: Lavoisier.Google Scholar
- Appel, J. A., DeWolf, E., Bockus, W. W., & Bowden, R. L. (2007). Preliminary 2007 Kansas wheat disease loss estimates. Kansas Cooperative Plant Disease Survey Report., Kansas Dept of Agriculture. Retrieved from http://www.ksda.gov/plant_protection/content/183/cid/611.
- Herrera-Foessel, S. A., Singh, R. P., Huera-Espino, J., Rosewarne, G. M., Periyannan, K., Viccars, L., Calvo-Salazar, V., Lan, C., & Lagudah, E. S. (2012). Lr68: a new gene conferring slow rusting resistance to leaf rust in wheat. Theoretical and Applied Genetics, 124, 1475–1486.PubMedCrossRefGoogle Scholar
- Kolmer, J. A., Hanzalova, A., Goyeau, H., Bayles, R., & Morgounov, A. (2012). Genetic differentiation of the wheat leaf rust fungus Puccinia triticina in Europe. Plant Patholology. doi: 10.1111/j.1365-3059.2012.0226.x. in press.
- Lagudah, E. S., Krattinger, S. G., Herrera-Foessel, S. A., Singh, R. P., Huerta-Espino, J., Spielmeyer, W., Brown-Guedira, G., Selter, L., & Keller, B. (2009). Gene-specific markers for the wheat gene Lr34/Yr18 which confers resistance to multiple fungal pathogens. Theoretical and Applied Genetics, 119, 889–898.PubMedCrossRefGoogle Scholar
- Morgounov, A., Tufan, H. A., Sharma, R., Akin, B., Bagci, A., Braun, H. J., Kaya, Y., Keser, M., Payne, T. S., Sonder, K., & McIntosh, R. A. (2012). Global incidence of wheat rust and powderly mildew during 1969–2010 and durability of resistance of winter wheat variety Bezostaya 1. European Journal of Plant Pathology, 132, 232–340.CrossRefGoogle Scholar
- Roelfs, A. P., Singh, R. P., & Saari, E. E. (1992). Rust Diseases of Wheat: Concepts and methods of disease management. Mexico: D. F. CIMMYT.Google Scholar
- Saari, E. E., & Prescott, J. M. (1985). World distribution in relation to economic losses. In A. P. Roelfs & W. R. Bushnell (Eds.), The cereal rusts vol 2, diseases, distribution, epidemiology, and control (pp. 259–298). Orlando: Academic.Google Scholar