High-resolution genome-wide association study and genomic prediction for disease resistance and cold tolerance in wheat

Key message High-resolution genome-wide association study (GWAS) facilitated QTL fine mapping and candidate gene identification, and the GWAS based genomic prediction models were highly predictive and valuable in wheat genomic breeding. Wheat is a major staple food crop and provides more than one-fi...

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Veröffentlicht in:	Theoretical and applied genetics Jg. 134; H. 9; S. 2857 - 2873
Hauptverfasser:	Pang, Yunlong, Wu, Yuye, Liu, Chunxia, Li, Wenhui, St. Amand, Paul, Bernardo, Amy, Wang, Danfeng, Dong, Lei, Yuan, Xiufang, Zhang, Huirui, Zhao, Meng, Li, Linzhi, Wang, Liming, He, Fang, Liang, Yunlong, Yan, Qiang, Lu, Yue, Su, Yu, Jiang, Hongming, Wu, Jiajie, Li, Anfei, Kong, Lingrang, Bai, Guihua, Liu, Shubing
Format:	Journal Article
Sprache:	Englisch
Veröffentlicht:	Berlin/Heidelberg Springer Berlin Heidelberg 01.09.2021 Springer Springer Nature B.V
Schlagworte:	Agricultural research Agriculture Biochemistry Biomedical and Life Sciences Biotechnology Calories Chromosome mapping Cold tolerance Control Cultivars Disease resistance Diseases and pests Fungal diseases of plants Gene mapping genes Genetic aspects Genome-wide association studies genome-wide association study Genomes Genomics Genotyping genotyping by sequencing Hardiness Leaf rust Life Sciences marker-assisted selection Methods Original Article Plant Biochemistry Plant breeding Plant Breeding/Biotechnology Plant Genetics and Genomics Plant immunology Plants Powdery mildew prediction Prediction models Quantitative trait loci quantitative traits Single-nucleotide polymorphism staple crops stress tolerance Stripe rust Wheat China
ISSN:	0040-5752, 1432-2242, 1432-2242
Online-Zugang:	Volltext
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Zusammenfassung:	Key message High-resolution genome-wide association study (GWAS) facilitated QTL fine mapping and candidate gene identification, and the GWAS based genomic prediction models were highly predictive and valuable in wheat genomic breeding. Wheat is a major staple food crop and provides more than one-fifth of the daily calories and dietary proteins for humans. Genome-wide association study (GWAS) and genomic selection (GS) for wheat stress resistance and tolerance related traits are critical to understanding their genetic architecture for improvement of breeding selection efficiency. However, the insufficient marker density in previous studies limited the utility of GWAS and GS in wheat genomic breeding. Here, we conducted a high-resolution GWAS for wheat leaf rust (LR), yellow rust (YR), powdery mildew (PM), and cold tolerance (CT) by genotyping a panel of 768 wheat cultivars using genotyping-by-sequencing. Among 153 quantitative trait loci (QTLs) identified, 81 QTLs were delimited to ≤ 1.0 Mb intervals with three validated using bi-parental populations. Furthermore, 837 stress resistance-related genes were identified in the QTL regions with 12 showing induced expression by YR and PM pathogens. Genomic prediction using 2608, 4064, 3907, and 2136 pre-selected SNPs based on GWAS and genotypic correlations between the SNPs showed high prediction accuracies of 0.76, 0.73, and 0.78 for resistance to LR, YR, and PM, respectively, and 0.83 for resistance to cold damage. Our study laid a solid foundation for large-scale QTL fine mapping, candidate gene validation and GS in wheat.
Bibliographie:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 14 content type line 23
ISSN:	0040-5752 1432-2242 1432-2242
DOI:	10.1007/s00122-021-03863-6