Regulation of flowering by photoperiod in Arabidopsis
Regulation of flowering by photoperiod in Arabidopsis
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DOI：
10.1046/j.1365-3040.1997.d01-114.x
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发表时间：
1997-06-01
影响因子：
7.3
通讯作者：
Coupland, G
中科院分区：
文献类型：
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作者：
Coupland, G
拟南芥（Arabidopsis thaliana）的开花时间受光质量和光周期长度的强烈影响，一般来说，有两类突变具有破坏对光周期响应的特征，其中第一类突变包括早花3 (elf3)，可能通过影响内源昼夜节律来影响开花时间，从而使光周期的持续时间得以测量。受第二类突变影响的基因，包括常量（co），是在长光周期下促进开花所必需的。CONSTANS基因已被克隆，对该基因在强病毒启动子中表达的转基因植物的分析表明，CO的转录调控是光周期响应中开花时间的重要决定因素。我描述了最近的进展，了解这两类突变，以及它们如何影响开花时间响应光周期。
The flowering time of Arabidopsis thaliana is strongly influenced by light quality and photoperiod length, Broadly, two classes of mutations have been characterized that disrupt the response to photoperiod, The first of these, which includes early flowering 3 (elf3), probably influences flowering time by affecting the endogenous circadian rhythm that enables the duration of the photoperiod to be measured. The genes affected by the second class of mutations, which includes constans (co), are required to promote flowering in response to long photoperiods. The CONSTANS gene has been cloned, and analysis of transgenic plants in which the gene is expressed from a strong viral promoter indicates that transcriptional regulation of CO is an important determinant of flowering time in response to photoperiod. I describe recent progress in understanding these two classes of mutations, and how they influence flowering time in response to photoperiod.