Identification of the Solid Stem Suppressor Gene Su-TdDof in Synthetic Hexaploid Wheat Syn-SAU-117
文献类型: 外文期刊
作者: Li, Hui 1 ; Liu, Xin 2 ; Zhang, Junqing 2 ; Chen, Longyu 2 ; Zhang, Minghu 2 ; Miao, Yongping 2 ; Ma, Pan 2 ; Hao, Ming 2 ; Jiang, Bo 2 ; Ning, Shunzong 2 ; Huang, Lin 1 ; Yuan, Zhongwei 2 ; Chen, Xuejiao 2 ; Chen, Xue 2 ; Liu, Dengcai 1 ; Wan, Hongshen 3 ; Zhang, Lianquan 1 ;
作者机构: 1.Sichuan Agr Univ, State Key Lab Crop Gene Explorat & Utilizat Southw, Chengdu 611130, Peoples R China
2.Sichuan Agr Univ, Triticeae Res Inst, Chengdu 611130, Peoples R China
3.Sichuan Acad Agr Sci, Minist Agr & Rural Affairs, Crop Res Inst, Key Lab Wheat Biol & Genet Improvement Southwester, Chengdu 610066, Peoples R China
4.Environm Friendly Crop Germplasm Innovat & Genet I, Chengdu 610066, Peoples R China
关键词: semisolid; gene mapping; Aegilops tauschii; synthetic hexaploid wheat; lodging resistance
期刊名称:INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES ( 影响因子:5.6; 五年影响因子:6.2 )
ISSN: 1661-6596
年卷期: 2023 年 24 卷 16 期
页码:
收录情况: SCI
摘要: Lodging is one of the most important factors affecting the high and stable yield of wheat worldwide. Solid-stemmed wheat has higher stem strength and lodging resistance than hollow-stemmed wheat does. There are many solid-stemmed varieties, landraces, and old varieties of durum wheat. However, the transfer of solid stem genes from durum wheat is suppressed by a suppressor gene located on chromosome 3D in common wheat, and only hollow-stemmed lines have been created. However, synthetic hexaploid wheat can serve as a bridge for transferring solid stem genes from tetraploid wheat to common wheat. In this study, the F-1, F-2, and F-2:3 generations of a cross between solid-stemmed Syn-SAU-119 and semisolid-stemmed Syn-SAU-117 were developed. A single dominant gene, which was tentatively designated Su-TdDof and suppresses stem solidity, was identified in synthetic hexaploid wheat Syn-SAU-117 by using genetic analysis. By using bulked segregant RNA-seq (BSR-seq) analysis, Su-TdDof was mapped to chromosome 7DS and flanked by markers KASP-669 and KASP-1055 within a 4.53 cM genetic interval corresponding to 3.86 Mb and 2.29 Mb physical regions in the Chinese Spring (IWGSC RefSeq v1.1) and Ae. tauschii (AL8/78 v4.0) genomes, respectively, in which three genes related to solid stem development were annotated. Su-TdDof differed from a previously reported solid stem suppressor gene based on its origin and position. Su-TdDof would provide a valuable example for research on the suppression phenomenon. The flanking markers developed in this study might be useful for screening Ae. tauschii accessions with no suppressor gene (Su-TdDof) to develop more synthetic hexaploid wheat lines for the breeding of lodging resistance in wheat and further cloning the suppressor gene Su-TdDof.
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