数字农科院2.0

Strigolactones Regulate Sugar Allocation to Control Rice Tillering and Root Development via the OsSPL14‐OsSHR1‐OsSWEET16 Pathway

文献类型： 外文期刊

作者： Miao Feng; Wenfan Luo; Sheng Luo; Rong Miao; Manpo Gu; Shuai Li; Xinxin Xing; Jinhui Zhang; Jinsheng Qian; Xin Liu; Chunlei Zhou; Qi Sun; Tong Luo; Nuo Chen; Yulong Ren; Zhijun Cheng; Cailin Lei; Zhichao Zhao; Shanshan Zhu; Xin Wang; Xiuping Guo; Qibing Lin; Jianmin Wan

关键词： root development | strigolactones | sugar allocation | tillering

期刊名称： PLANT BIOTECHNOLOGY JOURNAL

ISSN： 1467-7644

年卷期： 2025 年

页码：

收录情况： SCIE（2025版）

摘要： Strigolactones (SLs) are root-to-shoot phytohormones that regulate tillering (branching) and root development. Sugar, as an essential energy substance and signalling molecule, plays a fundamental role in the growth and development of plants. However, the molecular mechanisms by which SL directly regulates sugar allocation to control tillering and root development are still not fully understood. Here, we found that OsSHR1 operates directly downstream of OsSPL14 within the SL signalling pathway, facilitating root elongation while inhibiting tillering and crown root development. The expression of OsSHR1 is stimulated by OsSPL3/12/14 in vivo, and D53 can interact with these SPL proteins to suppress their transcriptional activities. Interestingly, we further demonstrate that OsSHR1 can directly bind to the promoters of OsSWEET2a/4/16, which encode sugar transporters thatcan control the allocation of sugar in plant growth and development. This binding facilitates the expression of sugar transporters,which in turn regulate sugar allocation and enable the plant's response to SLs. The results indicate that via the OsSPL14-OsSHR1-OsSWEET16pathway, SLs orchestrate the distribution of sugars to ensure their effectiveness in stimulating root elongation whilesimultaneously suppressing tillering and crown root formation in rice.

分类号：

  • 相关文献
作者其他论文 更多>>