Population genetics of Population genetics of the wheat leaf rust the wheat leaf rust fungus, fungus, Puccinia triticina Puccinia triticina in Central Asia in Central Asia J. A. Kolmer J. A. Kolmer M. E. Ordonez M. E. Ordonez USDA-ARS USDA-ARS Cereal Disease Laboratory Cereal Disease Laboratory University of Minnesota -St. University of Minnesota -St. Paul Paul
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Population genetics of the wheat leaf rust fungus, Puccinia triticina in Central Asia
Population genetics of the wheat leaf rust fungus, Puccinia triticina in Central Asia. J. A. Kolmer M. E. Ordonez USDA-ARS Cereal Disease Laboratory University of Minnesota -St. Paul. Leaf Rust Collections. Collections from 2002, 2004, 2005 A. Morgounov - CIMMYT, Almaty Kazakhstan - PowerPoint PPT Presentation
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Population genetics of the Population genetics of the wheat leaf rust fungus, wheat leaf rust fungus,
Puccinia triticinaPuccinia triticinain Central Asiain Central Asia
Tajikistan-Kyrgyzstan -15 Tajikistan-Kyrgyzstan -15 S. Kazakhstan - 39 S. Kazakhstan - 39 N. Kazakhstan- 25 N. Kazakhstan- 25 N. America-16 N. America-16
Durum - 2Durum - 2
Clone corrected within Clone corrected within populations populations
(race/SSR genotype)(race/SSR genotype) 20 differentials - 23 SSR 20 differentials - 23 SSR
lociloci
Super highway - Kazakhstan
Virulence and SSR DiversityVirulence and SSR Diversity
Cauc.Cauc. N. Kaz.N. Kaz. S. KazS. Kaz Tjk-KygTjk-Kyg UzbekUzbek N. Am.N. Am.
Tjk-Kyg-Uzb.-Tjk-Kyg-Uzb.-Caucasus not sig. Caucasus not sig. differentiated differentiated
S. Kaz - N. Kaz.S. Kaz - N. Kaz.not sig. not sig. differentiateddifferentiated
Differentiation Statistics (Phi) of Pair-wise Populations - Virulence phenotypes
Neighbor joining
Tjk-Kyg-Uzb - Caucasus not signif. differentiated
S. Kaz - N. Kaz. not signif. differentiated
0.82 correlation with virulence tree
Differentiation (Fst) Statistics of Pair-wise Populations SSR Genotypes
Neighbor joining
-Central Asia1 Avir Lr2a Vir Lr2c24Most from Cauc-Tjk-Kry-Uzb.
3 Vir Lr2a Vir Lr2cMost from S.+ N.Kazakhstan
-North America5 Avir Lr2a Vir Lr2c7 Vir Lr2a Lr2c Avir Lr2a Lr2c
-Durum 6 Avir. to almost all Lr genes
Individual Isolates SSR Allele Variation
Neighbor joining
Central AsiaCentral AsiaP. triticinaP. triticina populations populations
Two distinct Two distinct regional regional populations - populations - mountain barrier mountain barrier
Limited migration Limited migration between regions - between regions - very few SSR-very few SSR-virulence virulence genotypes in genotypes in commoncommon
Strong relationship Strong relationship between virulence between virulence and SSR genotypesand SSR genotypes
Come to Kazakhstan!!!
Population Genetics of Population Genetics of P. triticina - P. triticina - Future GoalsFuture Goals