Exploring genetic variation and stripe rust resistance in ICARDA's spring bread wheat (Triticum aestivum L.) using GWAS in West Asia and North Africa (WANA) region

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cg.contributor.affiliationInternational Center for Agricultural Research in the Dry Areasen
cg.contributor.affiliationAgricultural Research Center Egypten
cg.contributor.affiliationCairo Universityen
cg.contributor.donorCGIAR Trust Funden
cg.contributor.initiativeAccelerated Breeding
cg.creator.identifierZakaria, EL Gataa: 0000-0002-2935-2232en
cg.creator.identifierHamwieh, Aladdin: 0000-0001-6060-5560en
cg.creator.identifierTawkaz, Sawsan: 0000-0001-6683-5041en
cg.creator.identifierNazari, Kumarse: 0000-0001-9348-892Xen
cg.creator.identifierAl-Shamaa, Khaled: 0000-0002-7668-3798en
cg.creator.identifierTadesse, Wuletaw: 0000-0003-1175-3502en
cg.identifier.doihttps://doi.org/10.1016/j.egg.2025.100366en
cg.issn2405-9854en
cg.journalEcological Genetics and Genomicsen
cg.reviewStatusPeer Reviewen
cg.subject.actionAreaGenetic Innovation
cg.subject.impactAreaNutrition, health and food security
cg.subject.sdgSDG 2 - Zero hungeren
cg.volume35en
dc.contributor.authorYoussef, Alaaen
dc.contributor.authorEl-soda, Mohameden
dc.contributor.authorH. Osman, Neamaen
dc.contributor.authorShahin, Atefen
dc.contributor.authorZakaria, EL Gataaen
dc.contributor.authorHamwieh, Aladdinen
dc.contributor.authorTawkaz, Sawsanen
dc.contributor.authorNazari, Kumarseen
dc.contributor.authorAl-Shamaa, Khaleden
dc.contributor.authorTadesse, Wuletawen
dc.date.accessioned2025-05-21T21:16:20Z
dc.date.available2025-05-21T21:16:20Z
dc.identifier.urihttps://hdl.handle.net/10568/174791
dc.titleExploring genetic variation and stripe rust resistance in ICARDA's spring bread wheat (Triticum aestivum L.) using GWAS in West Asia and North Africa (WANA) regionen
dcterms.abstractStripe rust, caused by Puccinia striiformis f. sp. tritici, poses a major threat to global wheat (Triticum aestivum) production. This study assessed stripe rust resistance in 154 spring bread wheat genotypes from ICARDA, tested across four locations: Izmir (Turkey), Merchouch (Morocco), Sakha, and Sids (Egypt). Disease severity was evaluated at the adult plant stage under natural infection using the coefficient of infection (CI). Genotyping was performed using 17,692 high-quality SNP markers, and genome-wide association studies (GWAS) identified significant marker-trait associations (MTAs) for resistance. The mixed linear model (MLM), accounting for population structure and relatedness, detected significant differences in genotype resistance across locations. Twenty elite genotypes, including G101, G117, and G125, exhibited high resistance across all sites. A total of 136 significant MTAs and 17 candidate genes were identified, with −log10(p) > 3.0, primarily on chromosomes 2A, 3B, 4A, 5B, and 7A. Several MTAs aligned with known resistance genes, such as Yr18 and Yr57, while others suggested novel loci. Key markers, including ‘AX-109902001’ (6A), ‘AX-94992026’ (7B), ‘IAAV1650’ (5A), and ‘Excalibur_c37115_306’ (3B), were significantly associated with resistance across locations. These findings enhance the understanding of the genetic architecture of stripe rust resistance and provide MTAs suitable for marker-assisted selection to pyramid resistance genes. The identified resistant genotypes hold potential for direct release or use as breeding parents in the WANA region, pending further adaptation trials assessing yield stability and agronomic performance.en
dcterms.accessRightsLimited Access
dcterms.available2025-05-16en
dcterms.bibliographicCitationAlaa Youssef, Mohamed El-soda, Neama H. Osman, Atef Shahin, EL Gataa Zakaria, Aladdin Hamwieh, Sawsan Tawkaz, Kumarse Nazari, Khaled Al-Shamaa, Wuletaw Tadesse. (16/5/2025). Exploring genetic variation and stripe rust resistance in ICARDA's spring bread wheat (Triticum aestivum L. ) using GWAS in West Asia and North Africa (WANA) region. Ecological Genetics and Genomics, 35.en
dcterms.formatPDFen
dcterms.languageen
dcterms.publisherElsevieren
dcterms.subjectwheaten
dcterms.subjectgwasen
dcterms.subjectyellow rusten
dcterms.subjectwanaen
dcterms.typeJournal Article

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