中文摘要
开花调控和休眠调控一直是植物生理学和植物分子生物学研究的重要领域,最近的研究表明,两者在信号通路传递方面共用了部分调控元件,基于其共性的研究将是未来的发展趋势。FT及其同源基因已经被证实在植物的成花诱导和休眠调控中起到同样重要的作用,FT调控通路在成花诱导方面的分子机制研究已经在拟南芥等一年生模式植物中深入开展,但是该通路在休眠调控方面的分子研究仍极为匮乏。悬铃木为多年生的落叶乔木,也是我国及全球暖温带地区广泛应用的园林绿化树种。本项目立足于课题组前期的研究基础,拟通过组学研究的方法对悬铃木PaFT通路参与休眠调控的分子机制进行系统的研究。项目的实施将为揭示悬铃木休眠调控的分子机理打下基础,为多年生落叶植物的休眠调控理论提供新的证据。同时项目的研究结论有望指导分子育种策略应用于悬铃木等多年生观赏植物的周年生长节律调控,大大提高其园林应用价值。
英文摘要
Flowering and dormancy regulations are both the important research fields of plant physiology and plant molecular biology. Recent studies have shown that some of the regulatory elements within the signaling pathway are effective in both flowering and dormancy regulations. Research on common characteristics of the two regulation processes will be the development trend of future. FT and its homoeologous genes have been proved to have an important function in both flower induction and dormancy regulation. FT regulation pathway has been intensively studied in annual model plants like Arabidopsis. However, these studies were mostly focused on flowering regulation, not the dormancy regulation. London plane tree (Platanus acerifolia Willd.) is a perennial deciduous tree, and also a significantly important tree in urban landscaping throughout temperate climes. Based on our previous research work, this project intends to study the molecular mechanism of dormancy regulation that rely on PaFT regulation pathway in Platanus acerifolia. The implementation of the project will lay a good foundation for revealing the molecular mechanism of dormancy regulation in P. acerifolia and add new evidence to the theory of dormancy regulation in perennial deciduous plants. Meanwhile, a new strategy for molecular breeding will be developed with the hope to control the growth rhythm in perennial ornamental plants like London plane trees, which would be significantly improve their landscape application value.
