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Identification of genetic loci and candidate genes related to grain zinc and iron concentration using a zinc-enriched wheat ‘Zinc-Shakti’

Creator: Rathan, N.D.
Creator: Sehgal, D.
Creator: Thiyagarajan, K.
Creator: Singh, R.P.
Creator: Singh, A.M.
Creator: Velu, G.
Year: 2021
URI: https://hdl.handle.net/10883/21532
Language: English
Publisher: Frontiers
Copyright: CIMMYT 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
Type: Article
Place of Publication: Switzerland
Volume: 12
DOI: 10.3389/fgene.2021.652653
Description: The development of nutritionally enhanced wheat (Triticum aestivum L.) with higher levels of grain iron (Fe) and zinc (Zn) offers a sustainable solution to micronutrient deficiency among resource-poor wheat consumers. One hundred and ninety recombinant inbred lines (RILs) from ‘Kachu’ × ‘Zinc-Shakti’ cross were phenotyped for grain Fe and Zn concentrations and phenological and agronomically important traits at Ciudad Obregon, Mexico in the 2017–2018, 2018–2019, and 2019–2020 growing seasons and Diversity Arrays Technology (DArT) molecular marker data were used to determine genomic regions controlling grain micronutrients and agronomic traits. We identified seven new pleiotropic quantitative trait loci (QTL) for grain Zn and Fe on chromosomes 1B, 1D, 2B, 6A, and 7D. The stable pleiotropic QTL identified have expanded the diversity of QTL that could be used in breeding for wheat biofortification. Nine RILs with the best combination of pleiotropic QTL for Zn and Fe have been identified to be used in future crossing programs and to be screened in elite yield trials before releasing as biofortified varieties. In silico analysis revealed several candidate genes underlying QTL, including those belonging to the families of the transporters and kinases known to transport small peptides and minerals (thus assisting mineral uptake) and catalyzing phosphorylation processes, respectively.
Agrovoc: WHEAT
Agrovoc: BIOFORTIFICATION
Agrovoc: ZINC
Agrovoc: BREEDING
Agrovoc: QUANTITATIVE TRAIT LOCI
Related Datasets: https://figshare.com/collections/Identification_of_Genetic_Loci_and_Candidate_Genes_Related_to_Grain_Zinc_and_Iron_Concentration_Using_a_Zinc-Enriched_Wheat_Zinc-Shakti_/5445546
ISSN: 1664-8021
Journal: Frontiers in Genetics
Article number: 652653


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  • Wheat
    Wheat - breeding, phytopathology, physiology, quality, biotech

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