TY - JOUR
T1 - GWAS for Stripe Rust Resistance in Wild Emmer Wheat (Triticum dicoccoides) Population
T2 - Obstacles and Solutions
AU - Tene, May
AU - Adhikari, Elina
AU - Cobo, Nicolas
AU - Jordan, Katherine W.
AU - Matny, Oadi
AU - del Blanco, Isabel Alicia
AU - Roter, Jonathan
AU - Ezrati, Smadar
AU - Govta, Liubov
AU - Manisterski, Jacob
AU - Yehuda, Pnina Ben
AU - Chen, Xianming
AU - Steffenson, Brian J
AU - Akhunov, Eduard
AU - Sela, Hanan
N1 - Publisher Copyright:
© 2022 by the authors.
PY - 2022/3
Y1 - 2022/3
N2 - Stripe rust is a devastating disease in wheat that causes substantial yield loss around the world. The most effective strategy for mitigating yield loss is to develop resistant cultivars. The wild relatives of wheat are good sources of resistance to fungal pathogens. Here, we used a genome-wide association study (GWAS) to identify loci associated with stripe rust (causal agent: Puccinia striiformis f. sp. tritici) resistance in wild emmer (Triticum dicoccoides) at the seedling stage, in the greenhouse, and at the adult plant stage, in the field. We found that the two major loci contributing to resistance in our wild emmer panel were the previously cloned seedling-stage resistance gene, Yr15, and the adult-plant-stage resistance gene, Yr36. Nevertheless, we detected 12 additional minor QTLs that additionally contribute to adult plant resistance and mapped a locus on chromosome 3AS that tentatively harbors a novel seedling resistance gene. The genotype and phenotype data generated for the wild emmer panel, together with the detected SNPs associated with resistance to stripe rust, provide a valuable resource for disease-resistance breeding in durum and bread wheat.
AB - Stripe rust is a devastating disease in wheat that causes substantial yield loss around the world. The most effective strategy for mitigating yield loss is to develop resistant cultivars. The wild relatives of wheat are good sources of resistance to fungal pathogens. Here, we used a genome-wide association study (GWAS) to identify loci associated with stripe rust (causal agent: Puccinia striiformis f. sp. tritici) resistance in wild emmer (Triticum dicoccoides) at the seedling stage, in the greenhouse, and at the adult plant stage, in the field. We found that the two major loci contributing to resistance in our wild emmer panel were the previously cloned seedling-stage resistance gene, Yr15, and the adult-plant-stage resistance gene, Yr36. Nevertheless, we detected 12 additional minor QTLs that additionally contribute to adult plant resistance and mapped a locus on chromosome 3AS that tentatively harbors a novel seedling resistance gene. The genotype and phenotype data generated for the wild emmer panel, together with the detected SNPs associated with resistance to stripe rust, provide a valuable resource for disease-resistance breeding in durum and bread wheat.
KW - crop wild relatives
KW - GWAS
KW - stripe rust
KW - Triticum dicoccoides
KW - wheat
KW - wild emmer
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U2 - 10.3390/crops2010005
DO - 10.3390/crops2010005
M3 - Article
AN - SCOPUS:85136445374
SN - 2673-7655
VL - 2
SP - 42
EP - 61
JO - Crops
JF - Crops
IS - 1
ER -