Identification of genomic regions and sources for wheat blast resistance through GWAS in indian wheat genotypes

dc.creatorPhuke, R.M.
dc.creatorXinyao He
dc.creatorJuliana, P.
dc.creatorKabir, M.R.
dc.creatorRoy, K.K.
dc.creatorMarza, F.
dc.creatorRoy, C.
dc.creatorSingh, G.P.
dc.creatorChawade, A.
dc.creatorJoshi, A.K.
dc.creatorSingh, P.K.
dc.date2022-04-27T00:20:18Z
dc.date2022-04-27T00:20:18Z
dc.date2022
dc.date.accessioned2023-07-17T20:09:09Z
dc.date.available2023-07-17T20:09:09Z
dc.identifierhttps://hdl.handle.net/10883/22059
dc.identifier10.3390/genes13040596
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/7513824
dc.descriptionWheat blast (WB) is a devastating fungal disease that has recently spread to Bangladesh and poses a threat to the wheat production in India, which is the second-largest wheat producing country in the world. In this study, 350 Indian wheat genotypes were evaluated for WB resistance in 12 field experiments in three different locations, namely Jashore in Bangladesh and Quirusillas and Okinawa in Bolivia. Single nucleotide polymorphisms (SNPs) across the genome were obtained using DArTseq® technology, and 7554 filtered SNP markers were selected for a genome-wide association study (GWAS). All the three GWAS approaches used identified the 2NS translocation as the only major source of resistance, explaining up to 32% of the phenotypic variation. Additional marker-trait associations were located on chromosomes 2B, 3B, 4D, 5A and 7A, and the combined effect of three SNPs (2B_180938790, 7A_752501634 and 5A_618682953) showed better resistance, indicating their additive effects on WB resistance. Among the 298 bread wheat genotypes, 89 (29.9%) carried the 2NS translocation, the majority of which (60 genotypes) were CIMMYT introductions, and 29 were from India. The 2NS carriers with a grand mean WB index of 6.6 showed higher blast resistance compared to the non-2NS genotypes with a mean index of 46.5. Of the 52 durum wheats, only one genotype, HI 8819, had the 2NS translocation and was the most resistant, with a grand mean WB index of 0.93. Our study suggests that the 2NS translocation is the only major resistance source in the Indian wheat panel analysed and emphasizes the urgent need to identify novel non-2NS resistance sources and genomic regions.
dc.languageEnglish
dc.publisherMDPI
dc.relationhttps://hdl.handle.net/11529/10548642
dc.relationhttps://www.mdpi.com/2073-4425/13/4/596#supplementary
dc.relationNutrition, health & food security
dc.relationAccelerated Breeding
dc.relationGenetic Innovation
dc.relationBill & Melinda Gates Foundation
dc.relationForeign, Commonwealth & Development Office
dc.relationFoundation for Food & Agriculture Research
dc.relationUnited States Agency for International Development
dc.relationCGIAR Research Program on Wheat
dc.relationIndian Council of Agricultural Research
dc.relationVetenskapsrådet (the Swedish Research Council)
dc.relationAustralian Centre for International Agricultural Research
dc.relationAccelerating Genetic Gains Project
dc.relationhttps://hdl.handle.net/10568/126557
dc.rightsCIMMYT manages Intellectual Assets as International Public Goods. The user is free to download, print, store and share this work. In case you want to translate or create any other derivative work and share or distribute such translation/derivative work, please contact CIMMYT-Knowledge-Center@cgiar.org indicating the work you want to use and the kind of use you intend; CIMMYT will contact you with the suitable license for that purpose
dc.rightsOpen Access
dc.source4
dc.source13
dc.source2073-4425
dc.sourceGenes
dc.source596
dc.subjectAGRICULTURAL SCIENCES AND BIOTECHNOLOGY
dc.subjectWheat Blast
dc.subjectGenome-Wide Association Study
dc.subject2NS Translocation
dc.subjectResistance Breeding
dc.subjectWHEAT
dc.subjectFUNGAL DISEASES
dc.subjectAGRICULTURAL RESEARCH
dc.titleIdentification of genomic regions and sources for wheat blast resistance through GWAS in indian wheat genotypes
dc.typeArticle
dc.typePublished Version
dc.coverageIndia
dc.coverageBasel (Switzerland)


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