光周期诱导马铃薯块茎形成的分子机理研究进展  

Molecular Mechanism Underlying Photoperiodic-Induced Potato Tuber Formation

作　　者：谢婷婷[1] 柳俊[1] 

机构地区：[1]华中农业大学生命科学技术学院/国家蔬菜改良中心华中分中心/华中农业大学园艺植物生物学教育部重点实验室,武汉430070

出　　处：《中国农业科学》2013年第22期4657-4664,共8页Scientia Agricultura Sinica

基　　金：国家现代农业技术体系项目(CARS-10-P08);国家自然科学基金项目(31000736);高等学校博士学科点专项科研基金新教师基金课题(20100146120038)

摘　　要：马铃薯块茎形成机理不仅是植物发育生物学研究的重要内容之一,也是提高马铃薯产量、品质的重要保障。早期研究发现,光周期是诱导马铃薯块茎形成的一个关键环境因子,短日照利于马铃薯块茎形成。近10多年来,光周期调控马铃薯块茎形成机理研究取得了重要进展。已有研究发现,马铃薯块茎形成与拟南芥等植物的开花过程有较多相似之处。大量参与植物开花的重要基因,如光敏色素、CONSTANS(CO)、FLOWERING LOCUS T(FT)、LOV蓝光受体蛋白家族及CDF转录因子等在马铃薯块茎形成过程中都起到重要的调控作用。此外,马铃薯中发现的同源异型框基因POTH1及其相互作用基因StBEL5也在光调控马铃薯块茎形成过程中扮演重要角色。本文主要从马铃薯光信号感知及与光周期信号传递有关的基因调控等领域综述了光周期诱导的马铃薯块茎形成最新研究进展。Research on potato tuber formation is not only an important aspect of plant developmental biology, but also critical to improve potato yield and quality. It has been known for a long time that photoperiod plays a vital role in potato tuberization. Molecular mechanism underlying it, however, had made less progress until this century. More and more data support that potato tuber formation and Arabidopsis flowering share a similar pathway and a large number of common genes, such as Phytochrome, CONSTANS （CO）, FLOWERING LOCUS T （FT）, LOV blue light receptors and transcription factor CDF. In addition, a homeobox gene POTH1 and its interacting gene StBEL5, which were first studied in potato tuber formation, are identified to be affected by light. In this paper, recent progress in molecular mechanism underlying photoperiodic-induced potato tuber formation is described in the aspects of light signal perception, photoperiodic signal transduction and tuber induction by mobile signal molecules.

关 键 词：马铃薯 块茎发育 光周期诱导 

分 类 号：S532[农业科学—作物学]