Remapping of the stripe rust resistance gene Yr10 in common wheat

文献类型： 外文期刊

第一作者： Yuan, Cuiling

作者： Yuan, Cuiling;Wu, Jingzheng;Yan, Baiqiang;Ni, Fei;Wu, Jiajie;Yuan, Cuiling;Wu, Jingzheng;Yan, Baiqiang;Hao, Qunqun;Zhang, Chaozhong;Lyu, Bo;Ni, Fei;Wu, Jiajie;Hao, Qunqun;Zhang, Chaozhong;Lyu, Bo;Caplan, Allan;Fu, Daolin;Yan, Baiqiang

作者机构：

期刊名称：THEORETICAL AND APPLIED GENETICS （ 影响因子：5.699； 五年影响因子：5.565 ）

ISSN： 0040-5752

年卷期： 2018 年 131 卷 6 期

页码：

收录情况： SCI

摘要： Key message Yr10 is an important gene to control wheat stripe rust, and the search for Yr10 needs to be continued. Abstract Wheat stripe rust or yellow rust is a devastating fungal disease caused by Puccinia striiformis f. sp. tritici (Pst). Host disease resistance offers a primary source for controlling wheat stripe rust. The stripe rust resistance gene Yr10 confers the race-specific resistance to most tested Pst races in China including CYR29. Early studies proposed that Yr10 was a nucleotide-binding site, leucine-rich repeat gene archived as GenBank accession AF149112 (hereafter designated the Yr10 candidate gene or Yr10(CG) ). In this study, we revealed that 15 Chinese wheat cultivars positive for Yr10(CG) are susceptible to CYR29. We then expressed the Yr10(CG) cDNA in the common wheat 'Bobwhite'. The Yr10(CG)-cDNA positive transgenic plants were also susceptible to CYR29. Thus, it is highly unlikely that Yr10(CG) corresponds to the Yr10 resistance gene. Using the Yr10 donor 'Moro' and the Pst-susceptible wheat 'Huixianhong', we generated two F-3 populations that displayed a single Mendelian segregation on the Yr10 gene, and used them to remap the Yr10 gene. Six markers were placed in the Yr10 region, with the Yr10(CG) gene now mapping about 1.2-cM proximal to the Yr10 locus and the Xsdauw79 marker is completely linked to the Yr10 locus. Apparently, the Yr10 gene has not yet been identified. Fine mapping and positional cloning of Yr10 is important for gene pyramiding for stripe rust resistance in wheat.

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