The bHLH network underlying plant shade-avoidance
The bHLH network underlying plant shade-avoidance
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DOI：
10.1111/ppl.13074
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发表时间：
2020-02-28
影响因子：
6.4
通讯作者：
Pierik, Ronald
中科院分区：
文献类型：
--
作者：
Buti, Sara;Hayes, Scott;Pierik, Ronald
遮荫是许多植物物种的潜在威胁。当不耐荫的植物发现邻居时，它们会拉长茎和叶，以最大限度地捕捉光线。这种被称为“避荫”的发育程序受到专门的光感受器和一套转录调节因子的严格控制。碱性螺旋-环-螺旋（bHLH）转录因子家族对于遮荫诱导的伸长特别重要。近年来，很明显，这个家族的许多成员异源二聚化，它们一起形成了一个复杂的调控网络。这篇综述总结了最近的工作bHLH网络的结构和它如何调节伸长生长。除此之外，我们还强调了光感受器如何通过与转录因子的直接相互作用来调节网络的功能。希望本文的研究成果能为植物避阴的分子基础研究提供理论基础。
Shade is a potential threat to many plant species. When shade-intolerant plants detect neighbours, they elongate their stems and leaves in an effort to maximise their light capture. This developmental programme, known as 'shade-avoidance' is tightly controlled by specialised photoreceptors and a suite of transcriptional regulators. The basic helix-loop-helix (bHLH) family of transcription factors are particularly important for shade-induced elongation. In recent years, it has become apparent that many members of this family heterodimerise and that together they form a complex regulatory network. This review summarises recent work into the structure of the bHLH network and how it regulates elongation growth. In addition to this, we highlight how photoreceptors modulate the function of the network via direct interaction with transcription factors. It is hoped that the information integrated in this review will provide a useful theoretical framework for future studies on the molecular basis of shade-avoidance in plants.