The circadian clock is a genetic circuit that allows organisms to anticipate daily events caused by the rotation of the Earth. The plant clock regulates physiology at multiple scales, from cell division to ecosystem-scale interactions. It is becoming clear that rather than being a single perfectly synchronised timer throughout the plant, the clock can be sensitive to different cues, run at different speeds, and drive distinct processes in different cell types and tissues. This flexibility may help the plant clock to regulate such a range of developmental and physiological processes. In this review, using examples from the literature, we describe how the clock regulates development at multiple scales and discuss how the clock might allow local flexibility in regulation whilst remaining coordinated across the plant.

中文翻译：

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生物钟通过组织和细胞水平上的特异性来协调植物的发育。

昼夜节律时钟是一种遗传回路，可使生物体预测由地球自转引起的日常事件。从细胞分裂到生态系统规模的相互作用，植物钟在多个尺度上调节生理。越来越清楚的是，时钟不是整个工厂中唯一一个完全同步的计时器，而是可以对不同的信号敏感，以不同的速度运行并在不同的细胞类型和组织中驱动不同的过程。这种灵活性可以帮助植物时钟调节这种范围的发育和生理过程。在这篇综述中，我们将使用文献中的例子来描述时钟如何在多个尺度上调节发展，并讨论时钟如何在保持工厂整体协调性的同时，允许本地调节的灵活性。