Rapid Identification of a Stripe Rust Resistance Gene YrXK in Chinese Wheat Line Xike01015 Using Specific Locus Amplified Fragment (SLAF) Sequencing
文献类型： 外文期刊
作者： Sun, Cai 1 ; Liu, Yike 3 ; Li, Qiang 4 ; Wang, Baotong 4 ; Chen, Shuhui 1 ; Deng, Jianxin 1 ; Ma, Dongfang 1 ; Yang, Yuheng 2 ;
作者机构： 1.Yangtze Univ, Hubei Collaborat Innovat Ctr Grain Ind, Coll Agr, Jingzhou 434025, Hubei, Peoples R China
2.Southwest Univ, Coll Plant Protect, Beibei 400700, Peoples R China
3.Hubei Acad Agr Sci, Inst Food Crops, Hubei Key Lab Food Crop Germplasm & Genet Improve, Wuhan 430064, Hubei, Peoples R China
4.Northwest A&F Univ, State Key Lab Crop Stress Biol Arid Areas, Yangling 712100, Shaanxi, Peoples R China
关键词： genetic analysis; Puccinia striiformis f. sp. tritici; resistance gene; SLAF-seq
期刊名称：PLANT DISEASE （ 影响因子：4.614； 五年影响因子：5.33 ）
ISSN： 0191-2917
年卷期： 2022 年 106 卷 1 期
页码：
收录情况： SCI
摘要： Wheat stripe rust, an airborne fungal disease caused by Puccinia striiformis Westend. f. sp. tritici, is one of the most devastating diseases of wheat. Chinese wheat cultivar Xike01015 displays high levels of all-stage resistance (ASR) to the current predominant P. striiformis f. sp. tritici race CYR33. In this study, a single dominant gene, designated YrXk, was identified in Xike01015 conferring resistance to CYR33 with genetic analysis of F-2 and BC1 populations from a cross of Mingxian169 (susceptible) and Xike01015. The specific length amplified fragment sequencing (SLAF-seq) strategy was used to construct a linkage map in the F-2 population. Quantitative trait loci (QTL) analysis mapped YrXk to a 12.4-Mb segment on chromosomel BS, explaining >86.96% of the phenotypic variance. Gene annotation in the QTL region identified three differential expressed candidate genes, TraesCS1B02G168600.1, TraesCS1B02G170200.1, and TraesCS1B02G172400.1. The qRT-PCR results showed that TraesCS1B02G172400.1 and TraesCS1B02G168600.1 are upregulated and that TraesCS1B02G170200.1 is slightly downregulated after inoculation with CYR33 in the seedling stage, which indicates that these genes may function in wheat resistance to stripe rust. The results of this study can be used in wheat breeding for improving resistance to stripe rust.
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