Genome-Wide Association Mapping of Stem Rust Resistance in Hordeum vulgare subsp. spontaneum

@article{Sallam2017GenomeWideAM,
  title={Genome-Wide Association Mapping of Stem Rust Resistance in Hordeum vulgare subsp. spontaneum},
  author={A. Sallam and P. Tyagi and G. Brown-Guedira and G. Muehlbauer and Alex Hulse and B. Steffenson},
  journal={G3: Genes|Genomes|Genetics},
  year={2017},
  volume={7},
  pages={3491 - 3507}
}
Stem rust was one of the most devastating diseases of barley in North America. Through the deployment of cultivars with the resistance gene Rpg1, losses to stem rust have been minimal over the past 70 yr. However, there exist both domestic (QCCJB) and foreign (TTKSK aka isolate Ug99) pathotypes with virulence for this important gene. To identify new sources of stem rust resistance for barley, we evaluated the Wild Barley Diversity Collection (WBDC) (314 ecogeographically diverse accessions of… Expand
Genome-wide association study of stem rust resistance in a world collection of cultivated barley
TLDR
QTL conferring a 14–40% reduction in adult plant stem rust severity to multiple races of Pgt were found on chromosome 5H and will be useful in barley breeding and suggests that it may be effective against other races in the Ug99 lineage. Expand
Mapping adult plant stem rust resistance in barley accessions Hietpas-5 and GAW-79
Key messageMajor stem rust resistance QTLs proposed to beRpg2from Hietpas-5 andRpg3from GAW-79 were identified in chromosomes 2H and 5H, respectively, and will enhance the diversity of stem rustExpand
A genome wide association study of resistance to Puccinia striiformis f. sp. hordei and Puccinia graminis f. sp. tritici in barley and development of resistant germplasm.
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Germplasm with mapped genes/QTLs conferring resistance to stripe and stem rust was identified and is available as a resource to the research and breeding communities. Expand
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TLDR
To prepare for the possible arrival of race TTKSK in North America, a range of barley germplasm was crossed with donors of stem rust resistance genes Rpg1 and rpg4/Rpg5 with doubled haploids identified with adult plant resistance to all three rusts. Expand
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TLDR
Susceptibility among barley varieties to wheat stem rust race PTKST under field conditions in the present study is of concern, and resistant infection types to cultures from the USA are of concern. Expand
The wheat Sr22, Sr33, Sr35 and Sr45 genes confer resistance against stem rust in barley
TLDR
Assessment of the functionality, in barley, of cloned wheat Sr genes effective against race TTKSK found all four genes were found to confer effective stem rust resistance and did not display significant adverse agronomic effects in the absence of disease. Expand
The wheat Sr22, Sr33, Sr35 and Sr45 genes confer resistance against stem rust in barley
TLDR
Assessment of the functionality, in barley, of cloned wheat Sr genes effective against Ug99 found all four genes were found to confer effective stem rust resistance and are therefore a potential source of resistance against wheat stem rust in barley. Expand
Characterization of genes required for both Rpg1 and rpg4-mediated wheat stem rust resistance in barley
TLDR
Genetic mapping and exome capture rapidly identified candidate gene/s that function in RMRL and Rpg1 mediated resistance pathway/s, one or more of the identified candidate rpr9 genes are essential in the only two known effective stem rust resistance mechanisms, present in domesticated barley. Expand
Mapping malting quality and yield characteristics in a north American two-rowed malting barley × wild barley advanced backcross population
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Wild barley alleles had both positive and negative effects on the malting traits of diastatic power, free amino nitrogen, and soluble protein, Combined with the previously identified QTL associated with resistance to fungal diseases, this population represents a rich resource for barley breeding. Expand
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This study represents the first genome-wide identification of NBS genes in sunflower paving avenues for functional characterization and potential crop improvement. Expand
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