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GrainGenes Reference Report: TPG-9:3

Reference	TPG-9:3
Title	Genome-wide association mapping of leaf rust response in a durum wheat worldwide Germplasm collection.
Journal	Plant Genome
Year	2016
Volume	9
Pages	3
Author	Aoun M [ Show all 10 ]
Abstract	Leaf rust (caused by Puccinia triticina Erikss. [Pt]) is increasingly impacting durum wheat (Triticum turgidum L. var. durum) production with the recent appearance of races with virulence to widely grown cultivars in many durum producing areas worldwide. A highly virulent P. triticina race on durum wheat was recently detected in Kansas. This race may spread to the northern Great Plains, where most of the US durum wheat is produced. The objective of this study was to identify sources of resistance to several races from the United States and Mexico at seedling stage in the greenhouse and at adult stage in field experiments. Genome-wide association study (GWAS) was used to identify single-nucleotide polymorphism (SNP) markers associated with leaf rust response in a worldwide durum wheat collection of 496 accessions. Thirteen accessions were resistant across all experiments. Association mapping revealed 88 significant SNPs associated with leaf rust response. Of these, 33 SNPs were located on chromosomes 2A and 2B, and 55 SNPs were distributed across all other chromosomes except for 1B and 7B. Twenty markers were associated with leaf rust response at seedling stage, while 68 markers were associated with leaf rust response at adult plant stage. The current study identified a total of 14 previously uncharacterized loci associated with leaf rust response in durum wheat. The discovery of these loci through association mapping (AM) is a significant step in identifying useful sources of resistance that can be used to broaden the relatively narrow leaf rust resistance spectrum in durum wheat germplasm.
External Databases	https://doi.org/10.3835/plantgenome2016.01.0008
QTL	[ Hide all but 1 of 78 ] QLr.WorldDurum-1A.1 QLr.WorldDurum-1A.2 QLr.WorldDurum-1A.3 QLr.WorldDurum-2A.1 QLr.WorldDurum-2A.2 QLr.WorldDurum-2A.3 QLr.WorldDurum-2A.4 QLr.WorldDurum-2B.1 QLr.WorldDurum-2B.2 QLr.WorldDurum-2B.3 QLr.WorldDurum-2B.4 QLr.WorldDurum-3A.1 QLr.WorldDurum-3A.2 QLr.WorldDurum-3A.3 QLr.WorldDurum-3B.1 QLr.WorldDurum-3B.2 QLr.WorldDurum-3B.3 QLr.WorldDurum-3B.4 QLr.WorldDurum-3B.5 QLr.WorldDurum-4A.1 QLr.WorldDurum-4A.2 QLr.WorldDurum-4A.3 QLr.WorldDurum-4B.1 QLr.WorldDurum-4B.2 QLr.WorldDurum-4B.3 QLr.WorldDurum-5A.1 QLr.WorldDurum-5A.2 QLr.WorldDurum-5A.3 QLr.WorldDurum-5A.4 QLr.WorldDurum-5A.5 QLr.WorldDurum-5B QLr.WorldDurum-6A.1 QLr.WorldDurum-6A.2 QLr.WorldDurum-6A.3 QLr.WorldDurum-6B QLr.WorldDurum-7A.1 QLr.WorldDurum-7A.2 QLr.WorldDurum-7A.3 QTL0002_LR-Aoun_et_al__2016 QTL0003_LR-Aoun_et_al__2016 QTL0004_LR-Aoun_et_al__2016 QTL0006_LR-Aoun_et_al__2016 QTL0008_LR-Aoun_et_al__2016 QTL0010_LR-Aoun_et_al__2016 QTL0012_LR-Aoun_et_al__2016 QTL0014_LR-Aoun_et_al__2016 QTL0016_LR-Aoun_et_al__2016 QTL0018_LR-Aoun_et_al__2016 QTL0019_LR-Aoun_et_al__2016 QTL0022_LR-Aoun_et_al__2016 QTL0024_LR-Aoun_et_al__2016 QTL0027_LR-Aoun_et_al__2016 QTL0028_LR-Aoun_et_al__2016 QTL0030_LR-Aoun_et_al__2016 QTL0032_LR-Aoun_et_al__2016 QTL0034_LR-Aoun_et_al__2016 QTL0036_LR-Aoun_et_al__2016 QTL0038_LR-Aoun_et_al__2016 QTL0040_LR-Aoun_et_al__2016 QTL0005_LR-Aoun_et_al__2016 QTL0007_LR-Aoun_et_al__2016 QTL0009_LR-Aoun_et_al__2016 QTL0011_LR-Aoun_et_al__2016 QTL0013_LR-Aoun_et_al__2016 QTL0015_LR-Aoun_et_al__2016 QTL0017_LR-Aoun_et_al__2016 QTL0020_LR-Aoun_et_al__2016 QTL0021_LR-Aoun_et_al__2016 QTL0023_LR-Aoun_et_al__2016 QTL0025_LR-Aoun_et_al__2016 QTL0026_LR-Aoun_et_al__2016 QTL0029_LR-Aoun_et_al__2016 QTL0031_LR-Aoun_et_al__2016 QTL0033_LR-Aoun_et_al__2016 QTL0035_LR-Aoun_et_al__2016 QTL0037_LR-Aoun_et_al__2016 QTL0039_LR-Aoun_et_al__2016 QTL0041_LR-Aoun_et_al__2016
Trait Study	Leaf rust, GWAS on World durum collection, Aoun2016

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