Focusing on the nuclear and subnuclear dynamics of light and circadian signalling.
Focusing on the nuclear and subnuclear dynamics of light and circadian signalling.
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DOI：
10.1111/pce.13634
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发表时间：
2019-08
期刊：
影响因子：
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通讯作者：
James Ronald;S. Davis
中科院分区：
文献类型：
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作者：
James Ronald;S. Davis
生物钟使生物体能够将其内部生理反应与外部环境同步。这个过程，称为夹带，发生在内部和外部刺激的感知。与其他生物一样，在植物中，对光的感知对于昼夜节律的诱导和维持至关重要。红、蓝、远红光和UV-B光通过光感受器的活动被振荡器感知。四种类型的光感受器向振荡器发出信号：光敏色素、隐花色素、UVR 8和LOV-KELCH结构域蛋白。在大多数情况下，这些光感受器定位于细胞核以响应光，并且可以与亚核结构相关联以启动下游信号传导。在这篇综述中，我们将强调最近取得的进展，了解机制，促进核和亚核定位的光感受器和这些亚核机构在感光信号，包括振荡器的作用。我们还将强调最近取得的进展，在了解植物生物钟的组成部分的核和亚核定位的监管。
Circadian clocks provide organisms the ability to synchronise their internal physiological responses with the external environment. This process, termed entrainment, occurs through the perception of internal and external stimuli. As with other organisms, in plants the perception of light is a critical for the entrainment and sustainment of circadian rhythms. Red, blue, far-red and UV-B light is perceived by the oscillator through the activity of photoreceptors. Four classes of photoreceptors signal to the oscillator: phytochromes, cryptochromes, UVR8 and LOV-KELCH domain proteins. In most cases, these photoreceptors localise to the nucleus in response to light and can associate to subnuclear structures to initiate downstream signalling. In this review, we will highlight the recent advances made in understanding the mechanisms facilitating the nuclear and subnuclear localisation of photoreceptors and the role these subnuclear bodies have in photoreceptor signalling, including to the oscillator. We will also highlight recent progress that has been made in understanding the regulation of the nuclear and subnuclear localisation of components of the plant circadian clock.