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Genome-Wide Linkage Mapping of QTL for Adult-Plant Resistance to Stripe Rust in a Chinese Wheat Population Lantian 25 x Huixianhong

文献类型： 外文期刊

作者： Yang, Fangping 1 ; Wang, Yamei 2 ; Wu, Ling 3 ; Guo, Ying 1 ; Liu, Xiuyan 1 ; Wang, Hongmei 4 ; Zhang, Xueting 1 ; Ren, Kaili 5 ; Bai, Bin 1 ; Zhan, Zongbing 1 ; Liu, Jindong 6 ;

作者机构： 1.Gansu Acad Agr Sci, Wheat Res Inst, Lanzhou 730070, Peoples R China

2.Langfang Normal Univ, Coll Life Sci, Langfang 065000, Peoples R China

3.Sichuan Acad Agr Sci, Crop Res Inst, Chengdu 610066, Peoples R China

4.Gansu Acad Agr Sci, Inst Biotechnol, Lanzhou 730070, Peoples R China

5.Gansu Acad Agr Sci, Vegetable Res Inst, Lanzhou 730070, Peoples R China

6.Chinese Acad Agr Sci, Inst Crop Sci, Natl Wheat Improvement Ctr, Beijing 100081, Peoples R China

关键词： Puccinia striiformis; quantitative trait loci; single-nucleotide polymorphism (SNP); Triticum aestivum

期刊名称：PLANTS-BASEL （ 影响因子：4.1； 五年影响因子：4.5 ）

ISSN： 2223-7747

年卷期： 2025 年 14 卷 16 期

页码：

收录情况： SCI

摘要： Stripe rust, caused by Puccinia striiformis f. sp. tritici (Pst), represents a major global threat to wheat (Triticum aestivum. L). Planting varieties with adult-plant resistance (APR) is an effective approach for long-term management of this disease. The Chinese winter wheat variety Lantian 25 exhibits moderate-to-high APR against stripe rust under field conditions. To investigate the genetic basis of APR in Lantian 25, a set of 219 F6 recombinant inbred lines (RILs) was created from a cross between Lantian 25 (resistant parent) and Huixianhong (susceptible parent). These RILs were assessed for maximum disease severity (MDS) in Pixian of Sichuan and Qingshui of Gansu over the 2020-2021 and 2021-2022 growing seasons, resulting in data from four different environments. Genotyping was performed on these lines and their parents using the wheat Illumina 50K single-nucleotide polymorphism (SNP) arrays. Composite interval mapping (CIM) identified six quantitative trait loci (QTL), named QYr.gaas-2BS, QYr.gaas-2BL, QYr.gaas-2DS, QYr.gaas-2DL, QYr.gaas-3BS and QYr.gaas-4BL, which were consistently found across two or more environments and explained 4.8-12.0% of the phenotypic variation. Of these, QYr.gaas-2BL, QYr.gaas-2DS, and QYr.gaas-3BS overlapped with previous studies, whereas QYr.gaas-2BS, QYr.gaas-2DS, and QYr.gaas-4BL might be novel. All the resistance alleles for these QTL originated from Lantian 25. Furthermore, four kompetitive allele-specific PCR (KASP) markers, Kasp_2BS_YR (QYr.gaas-2BS), Kasp_2BL_YR (QYr.gaas-2BL), Kasp_2DS_YR (QYr.gaas-2DS) and Kasp_2DL_YR (QYr.gaas-2DL), were developed and validated in 110 wheat diverse accessions. Additionally, we identified seven candidate genes linked to stripe rust resistance, including disease resistance protein RGA2, serine/threonine-protein kinase, F-box family proteins, leucine-rich repeat family proteins, and E3 ubiquitin-protein ligases. These QTL, along with their associated KASP markers, hold promise for enhancing stripe rust resistance in wheat breeding programs.

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