Mapping QTL for Adult-Plant Resistance to Stripe Rust in a Chinese Wheat Landrace

文献类型： 外文期刊

第一作者： Pang, Yunlong

作者： Pang, Yunlong;Liu, Chunxia;Ni, Fei;Li, Wenhui;Zhang, Ziliang;Zhu, Huaqiang;Liu, Jingxian;Wu, Jiajie;Liu, Shubing;Lin, Meng;Bai, Guihua;Cai, Jin;Bai, Guihua

作者机构：

关键词： wheat; stripe rust; adult plant resistance; candidate gene; KASP

期刊名称：INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES （ 影响因子：6.208； 五年影响因子：6.628 ）

ISSN：

年卷期： 2022 年 23 卷 17 期

页码：

收录情况： SCI

摘要： Wheat stripe (yellow) rust is a worldwide disease that seriously reduces wheat grain yield and quality. Adult-plant resistance (APR) to stripe rust is generally more durable but usually controlled by multiple genes with partial resistance. In this study, a recombinant inbred line population was developed from a cross between a Chinese wheat landrace, Tutoumai, with APR to stripe rust, and a highly susceptible wheat cultivar, Siyang 936. The population was genotyped by genotyping-by-sequencing and phenotyped for APR to stripe rust in four consecutive field experiments. Three QTLs, QYr.sdau-1BL, QYr.sdau-5BL, and QYr.sdau-6BL, were identified for APR to stripe rust, and explained 8.0-21.2%, 10.1-22.7%, and 11.6-18.0% of the phenotypic variation, respectively. QYr.sdau-1BL was further mapped to a 21.6 Mb region using KASP markers derived from SNPs identified by RNA-seq of the two parents. In the QYr.sdau-1BL region, 13 disease-resistance-related genes were differently expressed between the two parents, and therefore were considered as the putative candidates of QYr.sdau-1BL. This study provides favorable gene/QTL and high-throughput markers to breeding programs for marker-assisted selection of the wheat stripe rust APR genes.

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