以低温为媒介的抑制和远红光为媒介的诱导决定了早晨的FLOWERING LOCUS T表达水平
Hayeon Kim1, Hye Won Kang1, Dae Yeon Hwang2
1Department of Agricultural Biotechnology, Seoul National University, Seoul, 08826, Korea.
Journal of integrative plant biology
|December 13, 2023
概括
植物使用光和温度来控制开花时间. 泽伊特卢普 (ZTL) 抑制了早晨的T (FT) 表达,光线和温度为季节性开花微调了这一过程.
科学领域:
- 植物分子生物学 植物分子生物学
- 循环时钟调节 循环时钟调节
- 花开时间控制.
背景情况:
- 植物通过光和温度等环境线索来调节开花时间.
- 开花地点T (FT) 是控制开花的关键基因,在自然长日条件下,在早上和晚上观察到表达峰值.
- 早晨FT诱导背后的精确机制,特别是在不同的环境条件下,尚未完全理解.
研究的目的:
- 为了阐明控制Arabidopsis thaliana早晨FT基因表达的调节机制.
- 调查ZEITLUPE (ZTL),TARGET OF EATs (TOEs),植物色素A (phyA) 和GIANTEA (GI) 在金融交易监管中的作用.
- 了解环境因素,如光质和温度周期如何影响FT感应.
主要方法:
- 在模拟的自然长日条件下,对野生类型和突变的阿拉比多普西斯植物 (ztl, toe1 toe2) 的FT信使RNA水平的分析.
- 研究ZTL和TOE之间的相互作用.
- 评估不同光线 (红:远红比) 和温度周期对ZTL蛋白水平和FT表达的影响.
主要成果:
- 泽伊特卢普 (ZEITLUPE) 通过与 FT 抑制器 TARGET OF EAT (TOE) 相互作用来抑制早晨的 FT 表达.
- 在模拟的自然条件下,ZTL或TOE的突变导致早晨FT表达升高.
- 夜晚到早晨的低温增强了ZTL对FT的抑制,而远红光则通过减少ZTL的丰富性和影响ZTL-GI复合体形成来抵消这一点.
结论:
- 该ZTL蛋白作为一个关键的抑制剂早晨的FT表达,调节的温度.
- 植物染色体A (phyA) 和GIANTEA (GI) 在促进早晨FT诱导方面发挥着至关重要的作用,通过光信号来抵消ZTL活动.
- 温度介导的ZTL活动和光介导的phyA/GI功能之间的平衡使植物能够精确地控制开花时间.
关键词:
开花的地方T T LOCUS T巨人座 (GIGANTEA) 是一个巨人座.泽伊特卢佩 (ZEITLUPE) 是一个远红色的灯光照亮了他们.开花时间 开花时间低的夜晚到早晨的温度.天然的长天,自然的长天.植物染色体A是一种植物染色体.红色与深红色的比例是红色与深红色的比例.更多相关视频
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