FT(FLOWERING LOCUS T)和TFL1(TERMINAL FLOWER 1)蛋白作为植物开花与花序发育的核心调控因子,可通过竞争性结合碱性亮氨酸拉链(bZIP)转录因子FD(FLOWERING LOCUS D)或14-3-3(G-Box Factor 14-3-3)蛋白来决定植物的开花启动,进而影响植...FT(FLOWERING LOCUS T)和TFL1(TERMINAL FLOWER 1)蛋白作为植物开花与花序发育的核心调控因子,可通过竞争性结合碱性亮氨酸拉链(bZIP)转录因子FD(FLOWERING LOCUS D)或14-3-3(G-Box Factor 14-3-3)蛋白来决定植物的开花启动,进而影响植物开花时间、花序构型及童期长短。本文系统综述了FT和TFL1蛋白在植物开花时间调控、花序发育及童期长短方面的作用机制与分子基础,分析了其在桑树中的研究现状,并展望了其在桑树遗传改良中的应用前景,以期为桑树遗传改良提供参考。展开更多
In plant development, the flowering transition and inflorescence architecture are modulated by two homol- ogous proteins, FLOWERING LOCUS T （FT） and TERMINAL FLOWER 1 （TFL1）. The florigen FT promotes the transitio...In plant development, the flowering transition and inflorescence architecture are modulated by two homol- ogous proteins, FLOWERING LOCUS T （FT） and TERMINAL FLOWER 1 （TFL1）. The florigen FT promotes the transition to reproductive development and flowering, while TFL1 represses this transition. Despite their importance to plant adaptation and crop improvement and their extensive study by the plant community, the molecular mechanisms controlling the opposing actions of FT and TFL1 have remained mysterious. Recent studies in multiple species have unveiled diverse roles of the FT/TFL 1 gene family in developmental processes other than flowering regulation. In addition, the striking evolution of FT homologs into flowering repressors has occurred independently in several species during the evolution of flowering plants. These reports indicate that the FT/TFL1 gene family is a major target of evolution in nature. Here, we comprehen- sively survey the conserved and diverse functions of the FTITFL1 gene family throughout the plant kingdom, summarize new findings regarding the unique evolution of FT in multiple species, and highlight recent work elucidating the molecular mechanisms of these proteins.展开更多
文摘FT(FLOWERING LOCUS T)和TFL1(TERMINAL FLOWER 1)蛋白作为植物开花与花序发育的核心调控因子,可通过竞争性结合碱性亮氨酸拉链(bZIP)转录因子FD(FLOWERING LOCUS D)或14-3-3(G-Box Factor 14-3-3)蛋白来决定植物的开花启动,进而影响植物开花时间、花序构型及童期长短。本文系统综述了FT和TFL1蛋白在植物开花时间调控、花序发育及童期长短方面的作用机制与分子基础,分析了其在桑树中的研究现状,并展望了其在桑树遗传改良中的应用前景,以期为桑树遗传改良提供参考。
文摘In plant development, the flowering transition and inflorescence architecture are modulated by two homol- ogous proteins, FLOWERING LOCUS T （FT） and TERMINAL FLOWER 1 （TFL1）. The florigen FT promotes the transition to reproductive development and flowering, while TFL1 represses this transition. Despite their importance to plant adaptation and crop improvement and their extensive study by the plant community, the molecular mechanisms controlling the opposing actions of FT and TFL1 have remained mysterious. Recent studies in multiple species have unveiled diverse roles of the FT/TFL 1 gene family in developmental processes other than flowering regulation. In addition, the striking evolution of FT homologs into flowering repressors has occurred independently in several species during the evolution of flowering plants. These reports indicate that the FT/TFL1 gene family is a major target of evolution in nature. Here, we comprehen- sively survey the conserved and diverse functions of the FTITFL1 gene family throughout the plant kingdom, summarize new findings regarding the unique evolution of FT in multiple species, and highlight recent work elucidating the molecular mechanisms of these proteins.
