Molecular interactions between light and hormone signaling to control plant growth
Molecular interactions between light and hormone signaling to control plant growth
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DOI：
10.1007/s11103-008-9400-y
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发表时间：
2009-03-01
影响因子：
5.1
通讯作者：
Blazquez, Miguel A.
中科院分区：
文献类型：
--
作者：
Alabadi, David;Blazquez, Miguel A.
作为固着生物，植物根据其周围环境条件的连续变化来调节其生长速率和发育，这种能力被称为可塑性。这种能力依赖于由内源性和环境线索触发的信号通路之间的相互作用网络。环境因素的变化如何被植物解释为发育或生长线索，或者换句话说，它们如何有助于植物的可塑性是植物生物学中当前的主要问题。光在塑造植物发育的环境因素中脱颖而出。植物已经进化出了一套系统，使它们能够监测它们所感知到的光的数量和质量差异，从而使它们的生长习性发生重要变化。在这篇综述中，我们专注于最近的研究结果如何从这个环境的线索是整合在去黄化和避阴综合征，并调制几种激素途径的内源性线索。在某些情况下，激素和光信号传导途径之间的相互作用是相互的，如赤霉素途径的情况，而在其他情况下，激素途径作用于环境信号的下游以调节生长。此外，生物钟增加了一个额外的调节层，它被提议将光提供的信息与激素途径提供的信息整合起来，以调节日常生长。
As sessile organisms, plants modulate their growth rate and development according to the continuous variation in the conditions of their surrounding environment, an ability referred to as plasticity. This ability relies on a web of interactions between signaling pathways triggered by endogenous and environmental cues. How changes in environmental factors are interpreted by the plant in terms of developmental or growth cues or, in other words, how they contribute to plant plasticity is a current, major question in plant biology. Light stands out among the environmental factors that shape plant development. Plants have evolved systems that allow them to monitor both quantitative and qualitative differences in the light that they perceive, that render important changes in their growth habit. In this review we focus on recent findings about how information from this environmental cue is integrated during de-etiolation and in the shade-avoidance syndrome, and modulated by several hormone pathways-the endogenous cues. In some cases the interaction between a hormone and the light signaling pathways is reciprocal, as is the case of the gibberellin pathway, whereas in other cases hormone pathways act downstream of the environmental cue to regulate growth. Moreover, the circadian clock adds an additional layer of regulation, which has been proposed to integrate the information provided by light with that provided by hormone pathways, to regulate daily growth.