Genetically Dissecting the Novel Powdery Mildew Resistance Gene in Wheat Breeding Line PBDH1607
文献类型： 外文期刊
作者： Liang, Xiao 1 ; Xu, Hongxing 2 ; Zhu, Shanying 3 ; Zheng, Yongshen 4 ; Zhong, Wen 5 ; Li, Haosheng 4 ; Niu, Liping 6 ; Wu, Liru 1 ; Zhang, Lipei 1 ; Song, Jiancheng 1 ; He, Huagang 3 ; Liu, Cheng 4 ; Ma, Pengtao 1 ;
作者机构： 1.Yantai Univ, Coll Life Sci, Yantai 264005, Shandong, Peoples R China
2.Henan Univ, Sch Life Sci, Kaifeng 475004, Henan, Peoples R China
3.Jiangsu Univ, Sch Life Sci, Zhenjiang 212013, Jiangsu, Peoples R China
4.Shandong Acad Agr Sci, Crop Res Inst, Jinan 250100, Shandong, Peoples R China
5.Shandong Seed Adm Stn, Jinan 250100, Shandong, Peoples R China
6.Wuhan Univ, Coll Life Sci, State Key Lab Hybrid Rice, Wuhan 430072, Hubei, Peoples R China
关键词： BSR-Seq; disease resistance; marker-assisted selection; wheat powdery mildew
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 8 期
页码：
收录情况： SCI
摘要： Powdery mildew is one of the most destructive diseases in wheat production. Identifying novel resistance genes and deploying them in new cultivars is the most effective approach to minimize wheat losses caused by powdery mildew. In this study, wheat breeding line PBDH1607 showed high resistance to powdery mildew at both the seedling and adult plant stages. Genetic analysis of the seedling data demonstrated that the resistance was controlled by a single dominant gene, tentatively designated PmPBDH. The Delta SNP index based on bulked segregant RNA sequencing indicated that PmPBDH was associated with an interval of about 30.8 Mb (713.5 to 744.3 Mb) on chromosome arm 4AL. Using newly developed markers, we mapped PmPBDH to a 3.2-cM interval covering 7.1 Mb (719,055,516 to 726,215,121 bp). This interval differed from those of Pm61 (717,963,176 to 719,260,469 bp), MlIW30 (732,769,506 to 732,790,522 bp), and MlNSF10 (729,275,816 to 731,365,462 bp) reported on the same chromosome arm. PmPBDH also differed from Pm61, MlIW30, and MlNSF10 by its response spectrum, origin, or inheritance mode, suggesting that PmPBDH should be a new Pm gene. In the candidate interval, five genes were found to be associated with PmPBDH via time course gene expression analysis, and thus they are candidate genes of PmPBDH. Six closely linked markers, including two kompetitive allele-specific PCR markers, were confirmed to be applicable for tracking PmPBDH in marker-assisted breeding.
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