LEAFY同源基因研究进展  

Progress of LEAFY Homologous Gene Study

作　　者：吕玲玲[1,2,3] 孙光明[1,4] 刘玉革[1] 魏长宾[1] 刘胜辉[1] 段俊[1] 

机构地区：[1]中国科学院华南植物园,广州510650 [2]中国热带农业科学院南亚热带作物研究所,广东湛江524091 [3]中国科学院研究生院,北京100049 [4]国家重要热带作物工程技术研究中心,海口571101

出　　处：《西北植物学报》2011年第1期197-203,共7页Acta Botanica Boreali-Occidentalia Sinica

基　　金：农业部"948"项目[2006-G34(A)];农业部行业科技项目(nyhyzx07-030)

摘　　要：LEAFY(LFY)同源基因存在于所有的陆生植物中,在植物花发育早期表达,并在花发育过程中抑制茎端分生组织的营养生长,调控花分生组织和花器官的形成,使转LFY基因植株提前开花,LFY同源基因与其上下游基因共同调控花发育过程.LFY同源基因的蛋白质结构在不同物种间保守性很高,但它们的表达部位差异很大.该文总结了近年来国内外已经克隆到的LFY同源基因的表达、功能及其在果树、花卉、粮食作物上的应用,以期为植物花发育的深入研究提供参考.LEAFY（LFY） homologous genes were found throughout terrestrial plants.They are the earliest flower meristem identity expressed genes.During the floral development,they could prohibit the vegetative growth of shoot apical meristem and are responsible for the regulation of floral meristem and floral organ development.Analyses of LFY transgenic plants indicated that it could make plants flower earlier.LFY homologous genes regulate the floral development with their upstream genes and downstream genes.A lot of studies suggested that the function of LFYs was conserved among angiosperm species.However,their expression patterns are significantly different.In this paper,expression and function of LFY homologous genes already cloned were summarized.Their application in fruit trees,flowers and crops were also discussed.The information is helpful for better understanding of the mechanisms of plant flowering.

关 键 词：LEAFY同源基因 表达 功能 应用 

分 类 号：Q789[生物学—分子生物学]