Journal of Integrative Agriculture ›› 2026, Vol. 25 ›› Issue (5): 2169-2173.DOI: 10.1016/j.jia.2026.02.008

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中花11号OsBRI1弱等位突变体的构建及其在水稻油菜素内酯信号研究中的应用

  

  • 收稿日期:2025-05-11 修回日期:2026-02-05 接受日期:2026-01-20 出版日期:2026-05-20 发布日期:2026-04-11

A weak OsBRI1 allele in Zhonghua 11 as a genetic tool for brassinosteroid signaling research in rice

Yanzhao Feng1*, Qingfeng Zhu1*, Qiuyue Yuan1, 2, Pei Chen1, Xielian Tan1, 3, Ning Huang1, 2, Jiao Xue1#, Yang Yu1#   

  1. Guangdong Key Laboratory of Crop Germplasm Resources Preservation and Utilization/Agro-biological Gene Research Center, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China

    College of Agriculture, South China Agricultural University, Guangzhou 510642, China

    3 College of Life Sciences, South China Agricultural University, Guangzhou 510642, China

  • Received:2025-05-11 Revised:2026-02-05 Accepted:2026-01-20 Online:2026-05-20 Published:2026-04-11
  • About author:#Correspondence Jiao Xue, E-mail: xuejiao@gdaas.cn; Yang Yu, E-mail: yuyang@gdaas.cn * These authors contributed equally to this study.
  • Supported by:

    This research was supported by the Special Funding for the Construction of the High-Level Academy of Agricultural Sciences, Guangdong Province, China (NYQS202606), the National Natural Science Foundation of China (32372066 and 32300454), the Guangdong Basic and Applied Basic Research Foundation, China (2023A1515012075 and 2024A1515013064), the Guangzhou Science and Technology Programme, China (2024B03J1363), and the Guangdong Academy of Agricultural Sciences, China (R2021YJ-QG005, R2021YJ-YB3011 and R2022PY-QY011).

摘要:

油菜素内酯(brassinosteroidsBRs)是调控水稻株型建成、发育进程和产量形成的重要植物激素。尽管同属粳稻亚种,中花11Zhonghua 11ZH11)与台中65Taichung 65TC65)在BR相关性状上仍存在明显差异,这与其遗传背景及育种历程的分化密切相关。由于株型紧凑、抽穗期短、遗传转化效率高,并拥有完整的T2T基因组序列,ZH11已成为当前水稻功能基因组研究的重要模式材料。然而,ZH11中缺乏诸如OsBRI1等关键BR信号通路突变体,在一定程度上制约了BR相关研究的开展。本研究从形态、生理和分子层面系统比较了ZH11TC65对外源BR处理的响应差异,揭示了两种材料在BR敏感性上的显著分化。基于此,我们通过连续回交并结合分子标记辅助选择,将TC65背景的弱等位d61-1突变导入ZH11背景,成功构建了近等基因系d61-zh11。该材料表现出适度的BR不敏感性和紧凑株型,遗传稳定,同时避免了强突变体常见的严重多效性缺陷。作为一种非转基因突变体,d61-zh11为在现代遗传背景下精细解析BR信号通路提供了理想平台,也可作为正向和反向遗传筛选的重要研究资源。本研究实现了经典激素遗传学与现代功能基因组学的有效衔接,为水稻BR相关基础研究和育种应用提供了重要的遗传材料。