Max Planck Institute for Plant Breeding Research, D-50829 Cologne, Germany.
Trends Genet. 2010 Jul;26(7):296-306. doi: 10.1016/j.tig.2010.04.003. Epub 2010 May 17.
The plant circadian clock promotes daily rhythms in the activity of many processes. These rhythms are synchronized to the diurnal day/night cycle by environmental cues such as light and temperature. Output pathways link the clock to particular biological processes, ensuring that they peak in activity at the appropriate times of day or night. Recently, significant progress was made in defining the mechanisms by which output pathways are activated at specific times. Here these issues are emphasized by describing how the clock regulates growth and development throughout the life cycle of Arabidopsis thaliana, including seed germination, seedling growth, stress responses and the transition to flowering. This wide impact of the clock on growth and development appears to provide an advantage by enhancing growth and seed production in different environments.
植物生物钟促进了许多过程的日常节律。这些节律通过环境线索（如光和温度）与昼夜节律同步。输出途径将时钟与特定的生物过程联系起来，以确保它们在一天中的适当时间或晚上达到活动高峰。最近，在定义输出途径在特定时间被激活的机制方面取得了重大进展。在这里，通过描述生物钟如何调节拟南芥整个生命周期中的生长和发育，包括种子萌发、幼苗生长、应激反应和向开花的转变，强调了这些问题。生物钟对生长和发育的广泛影响似乎通过在不同环境中促进生长和种子产量提供了优势。
