Auxin regulation of cell polarity in plants.

Auxin regulation of cell polarity in plants.
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DOI:
10.1016/j.pbi.2015.10.009
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发表时间:
2015-12
影响因子:
9.5
通讯作者:
Yang Z
Yang Z
中科院分区:
生物学2区
文献类型:
--
作者:
Pan X;Chen J;Yang Z

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众所周知,生长素通过核TIR 1/AFB受体介导的转录反应在器官/组织水平上控制图案形成和定向生长。最近的研究扩大了生长素作为细胞极化和形态发生的触发器或关键调节器的作用的竞技场。这些作用需要非转录反应,如细胞骨架和囊泡运输的变化,这通常是由ROP/Rac GTP酶依赖性途径调节。这些发现引发了关于调节这些反应的生长素受体的性质的问题,并重新引起了对ABP 1作为细胞表面生长素受体的兴趣,包括显示生长素结合蛋白1(ABP 1)以生长素依赖性方式与跨膜激酶(TMK)受体样激酶的胞外结构域相互作用的工作,以及关于40年前发现的生长素结合蛋白的争论。本文综述了近年来植物生长素非转录信号转导机制的研究进展。
Auxin is well known to control pattern formation and directional growth at the organ/tissue levels via the nuclear TIR1/AFB receptor-mediated transcriptional responses. Recent studies have expanded the arena of auxin actions as a trigger or key regulator of cell polarization and morphogenesis. These actions require non-transcriptional responses such as changes in the cytoskeleton and vesicular trafficking, which are commonly regulated by ROP/Rac GTPase-dependent pathways. These findings beg for the question about the nature of auxin receptors that regulate these responses and renew the interest in ABP1 as a cell surface auxin receptor, including the work showing auxin-binding protein 1 (ABP1) interacts with the extracellular domain of the transmembrane kinase (TMK) receptor-like kinases in an auxin-dependent manner, as well as the debate on this auxin binding protein discovered about 40 years ago. This review highlights recent work on the non-transcriptional auxin signaling mechanisms underscoring cell polarity and shape formation in plants.
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