烟草成花素FT基因及其调控机制研究进展  

Research Advances on Tobacco Florigen Gene FT and Its Regulatory Mechanisms

作　　者：解敏敏[1] 龚达平[1] 孙榕 王蕾 赵泽玉 陈明丽[1] XIE Minmin;GONG Daping;SUN Rong;WANG Lei;ZHAO Zeyu;CHEN Mingli(Tobacco Research Institute of Chinese Academy of Agricultural Sciences,Qingdao 266101,China;Qingao Agricultural University,Qingdao 266101,China)

机构地区：[1]中国农业科学院烟草研究所,青岛266101 [2]青岛农业大学,青岛266101

出　　处：《中国烟草科学》2018年第3期98-102,共5页Chinese Tobacco Science

基　　金：中国农业科学院科技创新工程(ASTIP-RTIC02)

摘　　要：烟草(Nicotiana tabacum L.)是叶用经济作物,早花严重影响烟叶的产量和品质。开花时间对烟叶产量、品质和生育周期具有重要影响。植物成花起始的调节是由光周期途径、春化途径、赤霉素途径和自主途径等相互依赖的多条途径共同决定的。成花素FT基因是成花各个途径的关键整合子,烟草中鉴定到4个FT同源基因,仅有Nt FT4是开花诱导子,而其他3个均是开花抑制子。烟草CET、CO、FPF1、LFY、NFL及MADS box类基因等也在烟草开花过程中起着非常重要的作用。本文对近年来烟草成花素FT基因的特征、功能及其调控机制的研究进展进行了综述,并展望了其在控制烟草早花和缩短育种进程中的应用潜力。Tobacco(Nicotiana tabacum L.)is an economic crop in which mature leaves are harvested.Early flowering has serious influence on quality and yield of tobacco.Moreover,long growth cycle is also a major factor limiting the progress of tobacco breeding.Initiation of floral development is regulated through the integration of photoperiod,vernalization,gibberellin and/or autonomous signaling pathways.FT is a key regulatory protein at the intersection of these pathways.Four FT-like genes were isolated from tobacco.Only NtFT4 is a floral inducer and others are floral inhibitors.Tobacco CET,CO,FPF1,LFY,NFL,MADS box and other genes also play very important roles in tobacco flowering.In this article,we summarize the research progress on characteristics,function and regulatory mechanisms of tobacco FT gene.It provided useful information for preventing early flowering and accelerating breeding progress in tobacco.

关 键 词：烟草 成花素 FT基因 调控机制 

分 类 号：S572.03[农业科学—烟草工业]