三糖6酸盐通路协调了Arabidopsis thaliana中发芽的上垂层系统中的动态变化
Magdalena Musialak-Lange1, Katharina Fiddeke1, Annika Franke1
1Max Planck Institute of Molecular Plant Physiology, Department of Metabolic Networks, Am Mühlenberg 1, Potsdam, 14476, Germany.
Plant physiology
|July 10, 2025
概括
三糖6酸盐 (T6P) 途径调节植物发芽的顶端干膜 (SAM) 大小和开花时间. WUSCHEL (WUS) 直接控制TREHALOSE PHOSPHATE PHOSPHATASEJ (TPPJ),通过miR156和SPL基因调节影响SAM大小和开花.
科学领域:
- 植物发育生物学植物发育生物学
- 分子遗传学 分子遗传学
- 植物生理学 植物生理学
背景情况:
- 喷射的上垂体干细胞系统 (SAM) 通过WUSCHEL (WUS) 和CLAVATA3 (CLV3) 维持干细胞种群.
- 在过渡到生殖生长期间,SAM的大小动态扩大,这一过程尚未完全理解.
- 在这种过渡过程中,六酸盐 (T6P) 水平的增加表明T6P通路的参与.
研究的目的:
- 研究T6P通路在调节SAM大小和花期中的作用.
- 阐明连接T6P信号传递,美里系统维护和花过渡的分子机制.
主要方法:
- 对具有T6P通路基因 (TPS1,TPPJ) 改变表达的阿拉比多普西斯菌株线的分析.
- 基因表达分析,包括WUS,TPPJ,miR156和SPL基因 (SPL3,SPL4,SPL5,SPL9).
- 基因分析TPPJ,clv3突变体和WUS-SPL4反循环之间的相互作用.
主要成果:
- 三酸 (Trehalose Phosphate Phosphate) (TPPJ) 是由世界卫生组织直接监管的.
- 改变TPPJ表达影响SAM大小和开花时间,而TPPJ减少恢复了clv3突变的野生类型开花.
- WUS调节SPL4,反过来抑制WUS,建立一个涉及T6P通路,miR156和SPL基因的负反循环.
结论:
- 通过WUS的TPPJ调节,T6P通路在调节SAM大小和开花时间方面发挥着至关重要的作用.
- 受到T6P路径和糖信号影响的WUS和SPL4之间的反循环,将水系维护与开花时间控制集成在一起.
- 这项研究揭示了植物发育过程中糖信号传递,水系维护和开花时间途径之间的动态调节相互作用.
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