Genome-wide association analysis of stripe rust resistance in modern Chinese wheat.

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    Author
    Jia, M; Yang, L; Zhang, W; Rosewarne, G; Li, J; Yang, E; Chen, L; Wang, W; Liu, Y; Tong, H; ...
    Date
    2020-10-27
    Source Title
    BMC Plant Biology
    Publisher
    Springer Science and Business Media LLC
    University of Melbourne Author/s
    Rosewarne, Garry
    Affiliation
    Veterinary and Agricultural Sciences
    Metadata
    Show full item record
    Document Type
    Journal Article
    Citations
    Jia, M., Yang, L., Zhang, W., Rosewarne, G., Li, J., Yang, E., Chen, L., Wang, W., Liu, Y., Tong, H., He, W., Zhang, Y., Zhu, Z. & Gao, C. (2020). Genome-wide association analysis of stripe rust resistance in modern Chinese wheat.. BMC Plant Biol, 20 (1), pp.491-. https://doi.org/10.1186/s12870-020-02693-w.
    Access Status
    Open Access
    URI
    http://hdl.handle.net/11343/251753
    DOI
    10.1186/s12870-020-02693-w
    Open Access at PMC
    http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7590722
    Abstract
    BACKGROUND: Stripe rust (yellow rust) is a significant disease for bread wheat (Triticum aestivum L.) worldwide. A genome-wide association study was conducted on 240 Chinese wheat cultivars and elite lines genotyped with the wheat 90 K single nucleotide polymorphism (SNP) arrays to decipher the genetic architecture of stripe rust resistance in Chinese germplasm. RESULTS: Stripe rust resistance was evaluated at the adult plant stage in Pixian and Xindu in Sichuan province in the 2015-2016 cropping season, and in Wuhan in Hubei province in the 2013-2014, 2016-2017 and 2018-2019 cropping seasons. Twelve stable loci for stripe rust resistance were identified by GWAS using TASSEL and GAPIT software. These loci were distributed on chromosomes 1B, 1D, 2A, 2B, 3A, 3B, 4B (3), 4D, 6D, and 7B and explained 3.6 to 10.3% of the phenotypic variation. Six of the loci corresponded with previously reported genes/QTLs, including Sr2/Yr30/Lr27, while the other six (QYr.hbaas-1BS, QYr.hbaas-2BL, QYr.hbaas-3AL, QYr.hbaas-4BL.3, QYr.hbaas-4DL, and QYr.hbaas-6DS) are probably novel. The results suggest high genetic diversity for stripe rust resistance in this population. The resistance alleles of QYr.hbaas-2AS, QYr.hbaas-3BS, QYr.hbaas-4DL, and QYr.hbaas-7BL were rare in the present panel, indicating their potential use in breeding for stripe rust resistance in China. Eleven penta-primer amplification refractory mutation system (PARMS) markers were developed from SNPs significantly associated with seven mapped QTLs. Twenty-seven genes were predicted for mapped QTLs. Six of them were considered as candidates for their high relative expression levels post-inoculation. CONCLUSION: The resistant germplasm, mapped QTLs, and PARMS markers developed in this study are resources for enhancing stripe rust resistance in wheat breeding.

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