Day-length perception and the photoperiodic regulation of flowering in Arabidopsis
Day-length perception and the photoperiodic regulation of flowering in Arabidopsis
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DOI：
10.1177/074873001129002006
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发表时间：
2001-08-01
影响因子：
3.5
通讯作者：
Carré, IA
中科院分区：
文献类型：
--
作者：
Carré, IA
拟南芥植物的开花被长日照加速，最近的遗传研究已经确定了光周期定时机制的要素。这些元件包括调节生物钟、光感受器和光信号传导途径的下游组分的功能的基因。这些结果为生物钟在光周期时间测量中的作用提供了证据，并表明光周期感知可能遵循Pittendridge的外部符合模型。T周期实验表明，昼夜节律的时间变化，相对于黎明和黄昏，与改变开花时间。因此，光周期的感知可以通过昼夜节律周期的相位中的调整来介导，所述昼夜节律周期的相位在重新夹带到不同的明-暗周期时出现。花的反应的节奏的本质是未知的，但候选分子已经确定。
The flowering of Arabidopsis plants is accelerated by long-day photoperiods, and recent genetic studies have identified elements of the photoperiodic timing mechanism. These elements comprise genes that regulate the function of the circadian clock, photoreceptors, and downstream components of light signaling pathways. These results provide evidence for the role of the circadian clock in photoperiodic time measurement and suggest that photoperiod perception may follow Pittendrigh's external coincidence model. T-cycle experiments indicated that changes in the timing of circadian rhythms, relative to dawn and dusk, correlated with altered flowering time. Thus, the perception of photoperiod may be mediated by adjustments in the phase of the circadian cycle that arise upon re-entrainment to a different light-dark cycle. The nature of the rhythm underlying the floral response is not known, but candidate molecules have been identified.