Characterization of a 4.1 Mb inversion harboring the stripe rust resistance gene YR86 on wheat chromosome 2AL
文献类型： 外文期刊
作者： Cao, Qiang 1 ; Zhu, Zhanwang 2 ; Xu, Dengan 2 ; Wu, Jianhui 1 ; Xu, Xiaowan 1 ; Dong, Yan 2 ; Bian, Yingjie 2 ; Ding, Fugong 2 ; Zhao, Dehui 2 ; Tu, Yang 4 ; Wu, Ling 4 ; Han, Dejun 1 ; Lan, Caixia 5 ; Xia, Xianchun 2 ; He, Zhonghu 1 ; Hao, Yuanfeng 2 ;
作者机构： 1.Northwest A&F Univ, Coll Agron, Yangling 712100, Shaanxi, Peoples R China
2.Chinese Acad Agr Sci CAAS, Inst Crop Sci, State Key Lab Crop Gene Resources & Breeding, Beijing 100081, Peoples R China
3.Hubei Acad Agr Sci, Food Crops Inst, Wheat Dis Biol Res Stn Cent China, Wuhan 430064, Hubei, Peoples R China
4.Sichuan Acad Agr Sci, Crop Res Inst, Chengdu 610066, Sichuan, Peoples R China
5.Huazhong Agr Univ, Coll Plant Sci & Technol, Hubei Hongshan Lab, Wuhan 430070, Peoples R China
6.CAAS, CIMMYT China Off, Beijing 100081, Peoples R China
关键词： Adult-plant resistance; Chromosomal inversion; Puccinia striiformis; Triticum aestivum
期刊名称：CROP JOURNAL （ 影响因子：5.6； 五年影响因子：6.0 ）
ISSN： 2095-5421
年卷期： 2024 年 12 卷 4 期
页码：
收录情况： SCI
摘要： Wheat cultivar Zhongmai 895 was earlier found to carry YR86 in an 11.6 Mb recombination-suppressed region on chromosome 2AL when crossed with Yangmai 16. To fine-map the YR86 locus, we developed two large F-2 populations from crosses Emai 580/Zhongmai 895 and Avocet S/Zhongmai 895. Remarkably, both populations exhibited suppressed recombination in the same 2AL region. Collinearity analysis across Chinese Spring, Aikang 58, and 10+ wheat genomes revealed a 4.1 Mb chromosomal inversion spanning 708.5-712.6 Mb in the Chinese Spring reference genome. Molecular markers were developed in the breakpoint and were used to assess a wheat cultivar panel, revealing that Chinese Spring, Zhongmai 895, and Jimai 22 shared a common sequence named Inv(CS), whereas Aikang 58, Yangmai 16, Emai 580, and Avocet S shared the sequence named Inv(AK58). The inverted configuration explained the suppressed recombination observed in all three bi-parental populations. Normal recombination was observed in a Jimai 22/Zhongmai 895 F-2 population, facilitating mapping of YR86 to a genetic interval of 0.15 cM corresponding to 710.27-712.56 Mb falling within the inverted region. Thirty-three high-confidence genes were annotated in the interval using the Chinese Spring reference genome, with six identified as potential candidates for YR86 based on genome and transcriptome analyses. These results will accelerate map-based cloning of YR86 and its deployment in wheat breeding. (c) 2024 Crop Science Society of China and Institute of Crop Science, CAAS. Production and hosting by Elsevier B.V. on behalf of KeAi Communications Co., Ltd. This is an open access article under the CC BY-NC- ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
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