Leibniz-Universität Hannover, Institute for Ornamental Plants and Wood Science, Section Molecular Developmental Physiology, Herrenhäuser Str. 2, D-30419 Hannover, Germany.
J Exp Bot. 2011 Jun;62(10):3339-57. doi: 10.1093/jxb/err033.
Since we are living in the 'age of transcription', awareness of aspects other than transcription in auxin signal transduction seems to have faded. One purpose of this review is to recall these other aspects. The focus will also be on the time scales of auxin responses and their potential or known dependence on either AUXIN BINDING PROTEIN 1 (ABP1) or on TRANSPORT-INHIBITOR-RESISTANT1 (TIR1) as a receptor. Furthermore, both direct and indirect evidence for the function of ABP1 as a receptor will be reviewed. Finally, the potential functions of a two-receptor system for auxin and similarities to other two-receptor signalling systems in plants will be discussed. It is suggested that such a functional arrangement is a property of plants which strengthens tissue autonomy and overcomes the lack of nerves or blood circulation which are responsible for rapid signal transport in animals.
由于我们生活在“转录时代”，人们对生长素信号转导中除转录以外的其他方面的认识似乎已经淡忘。本文的目的之一就是要唤起人们对这些方面的认识。本文的重点还将放在生长素反应的时间尺度及其对生长素结合蛋白 1（ABP1）或生长素转运抑制蛋白 1（TIR1）作为受体的潜在或已知的依赖性上。此外，本文还将回顾生长素结合蛋白 1 作为受体的直接和间接证据。最后，将讨论生长素双受体系统的潜在功能及其与植物中其他双受体信号系统的相似性。有人认为，这种功能安排是植物的一种特性，它增强了组织的自主性，并克服了动物中负责快速信号传输的神经或血液循环的缺乏。
