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Identification of genetic loci for powdery mildew resistance in common wheat

文献类型: 外文期刊

作者: Liu, Xia 1 ; Zhang, Xiaoqing 3 ; Meng, Xianghai 4 ; Liu, Peng 5 ; Lei, Menglin 2 ; Jin, Hui 6 ; Wang, Yanzhen 2 ; Jin, Yirong 5 ; Cui, Guoqing 2 ; Mu, Zhixin 2 ; Liu, Jindong 7 ; Jia, Xiaoyun 1 ;

作者机构: 1.Shanxi Agr Univ, Coll Agr, Taigu, Peoples R China

2.Shanxi Agr Univ, Ctr Agr Genet Resources Res,Minist Agr & Rural Aff, Key Lab Gene Resources & Germplasm Enhancement, Key Lab Crop Genet & Mol Improvement Shanxi Prov, Taiyuan, Peoples R China

3.Minist Agr & Rural Affairs, Natl Agr Technol Extens Serv Ctr, Beijing, Peoples R China

4.Hebei Acad Agr & Forestry Sci, Dryland Farming Inst, Hengshui, Peoples R China

5.Dezhou Acad Agr Sci, Wheat Res Inst, Dezhou, Peoples R China

6.Heilongjiang Acad Agr Sci, Inst Forage & Grassland Sci, Harbin, Peoples R China

7.Chinese Acad Agr Sci CAAS, Inst Crop Sci, Natl Wheat Improvement Ctr, Beijing, Peoples R China

关键词: 90K SNP array; KASP; powdery mildew; Triticum aestivum; resistance

期刊名称:FRONTIERS IN PLANT SCIENCE ( 影响因子:4.8; 五年影响因子:5.7 )

ISSN: 1664-462X

年卷期: 2024 年 15 卷

页码:

收录情况: SCI

摘要: Powdery mildew (PM) poses an extreme threat to wheat yields and quality. In this study, 262 recombinant inbred lines (RILs) of Doumai and Shi 4185 cross were used to map PM resistance genes across four environments. High-density genetic linkage map of the Doumai/Shi 4185 RIL population was constructed using the wheat Illumina iSelect 90K single-nucleotide polymorphism (SNP) array. In total, four stable quantitative trait loci (QTLs) for PM resistance, QPm.caas-2AS, QPm.caas-4AS, QPm.caas-4BL, and QPm.caas-6BS, were detected and explained 5.6%-15.6% of the phenotypic variances. Doumai contributed all the resistance alleles of QPm.caas-2AS, QPm.caas-4AS, QPm.caas-4BL, and QPm.caas-6BS. Among these, QPm.caas-4AS and QPm.caas-6BS overlapped with the previously reported loci, whereas QPm.caas-2AS and QPm.caas-4BL are potentially novel. In addition, six high-confidence genes encoding the NBS-LRR-like resistance protein, disease resistance protein family, and calcium/calmodulin-dependent serine/threonine-kinase were selected as the candidate genes for PM resistance. Three kompetitive allele-specific PCR (KASP) markers, Kasp_PMR_2AS for QPm.caas-2AS, Kasp_PMR_4BL for QPm.caas-4BL, and Kasp_PMR_6BS for QPm.caas-6BS, were developed, and their genetic effects were validated in a natural population including 100 cultivars. These findings will offer valuable QTLs and available KASP markers to enhance wheat marker-assisted breeding for PM resistance.

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