Unravelling candidate genes associated with blast disease resistance in an elite green super rice varietal panel using genome-wide association study

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cg.authorship.typesCGIAR and advanced research institute
cg.contributor.affiliationInternational Rice Research Institute
cg.contributor.affiliationUniversity of Georgia
cg.contributor.donorBill & Melinda Gates Foundation
cg.contributor.donorUSDA National Institute of Food and Agriculture
cg.creator.identifierHarshita Saxena: 0000-0002-7982-6563
cg.creator.identifierVarunseelan Murugaiyan: 0000-0001-5294-5733
cg.creator.identifierBikash Ghimire: 0000-0002-4949-545X
cg.creator.identifierChristian John Robiso: 0000-0003-3893-3730
cg.creator.identifierMary Jeanie Yanoria: 0000-0002-1135-9575
cg.creator.identifierPaul Raymer: 0000-0001-6396-7276
cg.creator.identifierbochra bahri: 0000-0001-5905-5880
cg.creator.identifierJauhar Ali or A. Jauhar Ali: 0000-0002-3177-2607
cg.edition2025
cg.howPublishedFormally Published
cg.identifier.doihttps://doi.org/10.1111/ppa.14062
cg.identifier.urlhttps://bsppjournals.onlinelibrary.wiley.com/doi/10.1111/ppa.14062
cg.isijournalISI Journal
cg.issn0032-0862
cg.journalPlant Pathology
cg.reviewStatusPeer Review
dc.contributor.authorSaxena, Harshita
dc.contributor.authorMurugaiyan, Varunseelan
dc.contributor.authorGhimire, Bikash
dc.contributor.authorRobiso, Christian John
dc.contributor.authorDe Asis, Erik Jon
dc.contributor.authorYanoria, Mary Jeanie
dc.contributor.authorRaymer, Paul L.
dc.contributor.authorBahri, Bochra Amina
dc.contributor.authorAli, Jauhar
dc.date.accessioned2025-02-11T01:15:14Z
dc.date.available2025-02-11T01:15:14Z
dc.identifier.urihttps://hdl.handle.net/10568/172922
dc.titleUnravelling candidate genes associated with blast disease resistance in an elite green super rice varietal panel using genome-wide association study
dcterms.abstractRice blast disease, caused by the filamentous fungus <jats:italic>Magnaporthe oryzae</jats:italic>, significantly threatens global rice crops leading to yield losses worldwide. Given that existing resistance genes often fail to control rice blast due to the evolution of new virulent strains, identifying novel genes using modern breeding tools to enhance partial resistance is crucial for developing more durable and effective control measures. Here, we used a genome‐wide association study (GWAS) with 2698 high‐throughput single‐nucleotide polymorphism (SNP) markers to analyse 134 rice cultivars from the Green Super Rice breeding programme against two virulent rice blast isolates, M101‐1‐2‐9‐1 (M101) and M64‐1‐3‐9‐1 (M64). GWAS identified 12 potential quantitative trait loci (QTLs) for blast resistance: five against M101 on chromosomes 1, 2, 3, 4 and 7 and seven against M64 on chromosomes 1, 4, 5, 6 and 12, with no QTL in common against both. Notably, <jats:italic>qM101_2</jats:italic> is within the 500 kb linkage disequilibrium (LD) block containing the known resistance gene <jats:italic>Pib</jats:italic> on chromosome 2, and <jats:italic>qM64_12</jats:italic>.<jats:italic>1</jats:italic> and <jats:italic>qM64_12</jats:italic>.<jats:italic>2</jats:italic> are within the <jats:italic>Pi‐ta</jats:italic> and <jats:italic>Ptr</jats:italic> gene cluster on chromosome 12. The remaining nine QTLs represented novel blast disease resistance sources. The identified candidate genes, including those encoding nucleotide‐binding site leucine‐rich repeats domains, protein kinases, resistance gene analogues and pathogenesis‐related proteins, may serve as a foundation for further studies to explore their potential role in enhancing disease resistance in rice.
dcterms.accessRightsOpen Access
dcterms.audienceCGIAR
dcterms.audienceDevelopment Practitioners
dcterms.audienceDonors
dcterms.audiencePolicy Makers
dcterms.audienceScientists
dcterms.bibliographicCitationSaxena, Harshita, Varunseelan Murugaiyan, Bikash Ghimire, Christian John Robiso, Erik Jon De Asis, Mary Jeanie Yanoria, Paul L. Raymer, Bochra Amina Bahri, and Jauhar Ali (2025). Unravelling candidate genes associated with blast disease resistance in an elite green super rice varietal panel using genome-wide association study. Plant Pathology (2025): 1-17.
dcterms.extent17 p.
dcterms.issued2025-02-02
dcterms.languageen
dcterms.licenseCC-BY-4.0
dcterms.publisherWiley
dcterms.subjectoryza sativa
dcterms.subjectMagnaporthe oryzae
dcterms.subjectDisease resistance
dcterms.subjectresistance genes
dcterms.subjectquantitative trait loci
dcterms.subjectSingle nucleotide polymorphism
dcterms.subjectbreeding programmes
dcterms.subjectcrop improvement
dcterms.typeJournal Article

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