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GrainGenes Reference Report: TAG-130-2249

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Reference	TAG-130-2249
Title	Genome-wide association mapping reveals a rich genetic architecture of stripe rust resistance loci in emmer wheat (Triticum turgidum ssp. dicoccum)
Journal	Theoretical and Applied Genetics
Year	2017
Volume	130
Pages	2249-2270
Author	Liu W [ Show all 7 ]
Abstract	Cultivated emmer wheat (Triticum turgidum ssp. dicoccum), one of the oldest domesticated crops in the world, is a potentially rich reservoir of variation for improvement of resistance/tolerance to biotic and abiotic stresses in wheat. Resistance to stripe rust (Puccinia striiformis f. sp. tritici) in emmer wheat has been under-investigated. Here, we employed genome-wide association (GWAS) mapping with a mixed linear model to dissect effective stripe rust resistance loci in a worldwide collection of 176 cultivated emmer wheat accessions. Adult plants were tested in six environments and seedlings were evaluated with five races from the United States and one from Italy under greenhouse conditions. Five accessions were resistant across all experiments. The panel was genotyped with the wheat 90,000 Illumina iSelect single nucleotide polymorphism (SNP) array and 5106 polymorphic SNP markers with mapped positions were obtained. A high level of genetic diversity and fast linkage disequilibrium decay were observed. In total, we identified 14 loci associated with field resistance in multiple environments. Thirty-seven loci were significantly associated with all-stage (seedling) resistance and six of them were effective against multiple races. Of the 51 total loci, 29 were mapped distantly from previously reported stripe rust resistance genes or quantitative trait loci and represent newly discovered resistance loci. Our results suggest that GWAS is an effective method for characterizing genes in cultivated emmer wheat and confirm that emmer wheat is a rich source of stripe rust resistance loci that can be used for wheat improvement.
External Databases	https://doi.org/10.1007/s00122-017-2957-6 PubMed: 28770301
Germplasm	[ Hide all but 1 of 176 ] MG5312 MG5274 MG5302/1 MG5313 MG5527/2 MG5527/1 MG5300/3/1 MG5300/3/2 MG5297/1 MG15517 MG5563/1 MG5563/2 IDG114 IDG392 IDG2133 MG5282 MG5339/2 MG5340 MG5345 MG5346/1 MG5346/2 MG5347/1 MG5347/2 MG5350/2/1 MG5351 MG5353 MG5354/1 MG5354/2 MG5357/4 MG5359 MG5361 MG5362 MG5363 MG5366 MG5377 MG5395/1 MG5395/2 MG5504 MG5508 MG5530 MG5549 MG5550 MG5556 MG5557 MG5338/1 MG5339/1 MG5344/2 MG5344/3 MG5281/1 MG5306 MG29292 MG5380/1/1 MG5380/1/2 MG5381 MG5384 MG5314 MG5315 MG5303/1 MG5320/1 MG15528 MG15529 MG5398 MG5399/3_A MG5447 MG5449 MG5450 MG5451 MG5453/1 MG5453/2 MG5454 MG5327 MG5389 MG5536 MG5329/1 MG5329/2 MG5388/2 MG5287/2 MG5388/1 MG5421_A MG5423 MG5400/5 MG4369/1 MG4369/2 MG5273 MG5275 MG5287/1 MG5290 MG5385 MG5386 MG5401 MG5402/1 MG5402/2 MG5405 MG5407 MG5409 MG5411 MG5421_B MG5427 MG5429 MG5431 MG5433 IDG5819 IDG8632/1 IDG8632/2 IDG8634/1_A IDG8634/2_B IDG8649 IDG8727 IDG8784/1 IDG8784/2 IDG10391/1 IDG10391/4 IDG10899 IMG15530 MG3429 MG3428 MG3430 MG3431 MG5285 MG5513 MG5516 MG5317/1 MG5537 MG5545 MG5546 MG3521/1 MG5269 MG5270 MG5307 MG5310 MG5437 MG5331/1 MG5333/1-FARVENTO MG5334/1 MG5335/1 MG5463 MG5465 MG5466 MG5467 MG5468/1 MG5468/2 MG5469 MG5470 MG5474 MG5476 MG5477 MG5478 MG5481 MG5492 MG5494/1 MG5494/2 MG5335/2 MG15516 MG15518 MG4366/2 MG4358 MG4360 MG4366/1 MG4374/1 MG4374/2 MG4375/1 MG4375/2 MG4376 MG4382 MG4384 MG5446 MG5529 MG4356 MG5268 MG5343 MG5397/1_A MG5397/2 MG5305 MG5567 MG5442 MG28056
QTL	QYr.Ttd-1A.1 [ Show all 74 ]
Trait Study	Stripe rust resistance, emmer wheat, Liu2017c

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