CIRCADIAN REGULATION OF PLANT GROWTH
CIRCADIAN REGULATION OF PLANT GROWTH
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DOI：
10.1002/9781119312994.apr0655
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发表时间：
2018-11-01
影响因子：
1.6
通讯作者：
Bogre, Laszlo
中科院分区：
文献类型：
--
作者：
Henriques, Rossana;Papdi, Csaba;Bogre, Laszlo
生物钟产生24小时的生物节律，为来自所有王国的生物体提供适应优势。简化的时钟模型包括三个主要组成部分：每天重置振荡的输入（例如光和温度）;中央振荡器，其中几个环路通过染色质重塑，转录和翻译后机制的交织连接;以及输出，包括振荡转录本和/或能够将波动模式翻译成特定生物过程的蛋白质。因此，生物钟保持着一种预测机制，控制着植物生命周期的不同方面。从下胚轴伸长（幼苗在土壤中生长时达到光照）到光合作用，胁迫反应和新陈代谢，生物钟促进植物适应性和生物量的增加。主要的发育转变也受到昼夜节律的调节。在这里，我们将评估生物钟对植物生长的影响（考虑伸长/扩张和生物量驱动的生长）。我们将讨论细胞生长和增殖，淀粉代谢和蛋白质翻译的调节，特别是在植物中，但在其他生物体中提供一些见解。我们期望这些发现将使我们更广泛地了解昼夜节律调节过程在为生物体提供适应特定环境条件的生长和发育能力方面的相关性。
Circadian clocks generate 24 h biological rhythms that provide an adaptive advantage to organisms from all kingdoms. A simplified clock model comprises three main components: an input (e.g. light and temperature) that resets the oscillation daily; a central oscillator where several loops are connected by the intertwining of chromatin remodelling, transcriptional, and post-translational mechanisms; and outputs including oscillating transcripts and/or proteins able to translate waving patterns into specific biological processes. Therefore, the clock maintains an anticipation mechanism controlling different aspects of the plant life cycle. From hypocotyl elongation (when seedlings grow through the soil reaching for light) to photosynthesis, stress responses and metabolism, the clock promotes plant fitness and an increase in biomass. Major developmental transitions are also under circadian regulation. Here, we will assess the impact of the circadian clock on plant growth (considering both elongation/expansion and biomass-driven growth). We will address the regulation of cell growth and proliferation, starch metabolism, and protein translation, focusing especially in plants but providing some insights in other organisms. We expect that these findings will allow a broader understanding of the relevance of circadian-regulated processes in providing organisms with the ability to adjust their growth and development to specific environmental conditions.