Genetic dissection and identification of stripe rust resistance genes in the wheat cultivar Lanhangxuan 121, a cultivar selected from a space mutation population

文献类型： 外文期刊

第一作者： Wu, Qimeng

作者： Wu, Qimeng;Liu, Lei;Zhang, Dandan;Li, Chenchen;Nie, Ruiqi;Duan, Jiangli;Wan, Jufen;Zhao, Jiwen;Cao, Jianghao;Liu, Dan;Liu, Shengjie;Wang, Qilin;Zheng, Weijun;Han, Dejun;Wang, Changfa;Wu, Jianhui;Li, Chunlian;Kang, Zhensheng;Zhang, Wentao;Du, Jiuyuan;Yao, Qiang

作者机构：

关键词： Stripe rust resistance gene; Bulked segregant analysis; Puccinia striiformis; QTL mapping; Triticum aestivum

期刊名称：MOLECULAR BREEDING （ 影响因子：3.1； 五年影响因子：3.1 ）

ISSN： 1380-3743

年卷期： 2024 年 44 卷 3 期

页码：

收录情况： SCI

摘要： Stripe rust is a devastating disease of wheat worldwide. Chinese wheat cultivar Lanhangxuan 121 (LHX121), selected from an advanced line L92-47 population that had been subjected to space mutation breeding displayed a consistently higher level of resistance to stipe rust than its parent in multiple field environments. The aim of this research was to establish the number and types of resistance genes in parental lines L92-47 and LHX121 using separate segregating populations. The first population developed from a cross between LHX121 and susceptible cultivar Xinong 822 comprised 278 F2:3 lines. The second validation population comprised 301 F2:3 lines from a cross between L92-47 and susceptible cultivar Xinong 979. Lines of two population were evaluated for stripe rust response at three sites during the 2018-2020 cropping season. Affymetrix 660 K SNP arrays were used to genotype the lines and parents. Inclusive composite interval mapping detected QTL QYrLHX.nwafu-2BS, QYrLHX.nwafu-3BS, and QYrLHX.nwafu-5BS for resistance in all three environments. Based on previous studies and pedigree information, QYrLHX.nwafu-2BS and QYrLHX.nwafu-3BS were likely to be Yr27 and Yr30 that are present in the L92-47 parent. QYrLHX.nwafu-5BS (YrL121) detected only in LHX121 was mapped to a 7.60 cM interval and explained 10.67-22.57% of the phenotypic variation. Compared to stripe rust resistance genes previously mapped to chromosome 5B, YrL121 might be a new adult plant resistance QTL. Furthermore, there were a number of variations signals using 35 K SNP array and differentially expressed genes using RNA-seq between L92-47 and LHX121 in the YrL121 region, indicating that they probably impair the presence and/or function of YrL121.

分类号：

  • 相关文献
作者其他论文 更多>>

微信小程序