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GrainGenes Reference Report: GGG-5-449

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Reference
GGG-5-449
Title
A Genome-Wide Association Study of Resistance to Stripe Rust (Puccinia striiformis f. sp. tritici) in a Worldwide Collection of Hexaploid Spring Wheat (Triticum aestivum L.)
Journal
G3: Genes, Genomes, Genetics
Year
2015
Volume
5
Pages
449-465
Author
Maccaferri M
[ Show all 10 ]
Abstract
New races of Puccinia striiformis f. sp. tritici (Pst), the causal pathogen of wheat stripe rust, show high virulence to previously deployed resistance genes and are responsible for large yield losses worldwide. To identify new sources of resistance we performed a genome-wide association study (GWAS) using a worldwide collection of 1000 spring wheat accessions. Adult plants were evaluated under field conditions in six environments in the western United States, and seedlings were tested with four Pst races. A single-nucleotide polymorphism (SNP) Infinium 9K-assay provided 4585 SNPs suitable for GWAS. High correlations among environments and high heritabilities were observed for stripe rust infection type and severity. Greater levels of Pst resistance were observed in a subpopulation from Southern Asia than in other groups. GWAS identified 97 loci that were significant for at least three environments, including 10 with an experiment-wise adjusted Bonferroni probability < 0.10. These 10 quantitative trait loci (QTL) explained 15% of the phenotypic variation in infection type, a percentage that increased to 45% when all QTL were considered. Three of these 10 QTL were mapped far from previously identified Pst resistance genes and QTL, and likely represent new resistance loci. The other seven QTL mapped close to known resistance genes and allelism tests will be required to test their relationships. In summary, this study provides an integrated view of stripe rust resistance resources in spring wheat and identifies new resistance loci that will be useful to diversify the current set of resistance genes deployed to control this devastating disease.
External Databases
http://doi.org/10.1534/g3.114.014563
Gene
Yr78 (Triticum)
Germplasm
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CItr12691
CItr3008
PI155280
PI192001
PI494101
PI499967
PI518648
PI638738
CItr11887
CItr12156
CItr12170
CItr12171
CItr12302
CItr12782
CItr12814
CItr12835
CItr12881
CItr13777
CItr13953
CItr14246
CItr14353
CItr14362
CItr14371
CItr14392
CItr14400
CItr14976
CItr15136
CItr15172
CItr15522
CItr15560
CItr15634
CItr15835
CItr15850
CItr17750
CItr17756
CItr17943
PI106202
PI117517
PI117752
PI117757
PI117758
PI117775
PI124739
PI124847
PI126822
PI130645
PI130647
PI131268
PI131273
PI131401
PI134337
PI134348
PI154279
PI158409
PI159100
PI159105
PI170907
PI170910
PI170924
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CItr14321
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PI103833
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PI107608
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PI153786
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PI155269
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PI320479
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PI591932
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PI592026
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PI595213
PI600836
PI601073
PI639452
PI639455
PI639458
PI639466
PI642362
PI83729
PI83733
PI86198
PI92472
CItr12345
CItr15090
CItr15135
CItr15212
CItr15397
CItr8429
CItr8432
CItr8440
CItr8625
PI116329
PI129518
PI157905
PI163422
PI163428
PI163571
PI168789
PI168796
PI181470
PI182077
PI182094
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PI193048
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PI203086
PI210969
PI210972
PI230653
PI234163
PI261822
PI268009
PI270044
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PI278220
PI278638
PI285757
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PI321873
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PI322114
PI322118
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PI322226
PI329234
PI330535
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PI378911
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PI378915
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PI574356
PI68281
PI73333
PI73345
PI94554
PI94555
PI94562
CItr15088
PI595661
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PI638576
PI639058
CItr15471
CItr15478
PI111244
PI145724
PI164377
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PI165180
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PI167636
PI168480
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PI626280
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PI626571
PI70695
PI70698
PI73329
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PI94367
Locus
cos1Hb
[ Show all 1041 ]
Map Data
Wheat, Yr genes and QTL
Wheat, Yr Update, 2021
QTL
QYr.ucw-1B
[ Show all 82 ]
Keyword
association mapping
bread wheat
disease resistance
genetic map
yellow rust

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