The SAUR gene family: the plant’s toolbox for adaptation of growth and development

First author: Niek Stortenbeker; Affiliations: Radboud University Nijmegen (拉德堡德大学): Nijmegen, the Netherlands

Corresponding author: Marian Bemer

The family of Small Auxin Up-Regulated genes (SAURs) is a family of auxin-responsive genes with about 60 to 140 members in most higher plant species. Despite the early discovery of their auxin responsiveness, their function and mode of action remained unknown for a long time. In recent years, the importance of SAUR genes for the regulation of dynamic and adaptive growth, and the molecular mechanisms by which SAUR proteins act are increasingly understood. SAURs play a central role in auxin-induced acid growth, but can also act independently of auxin, tissue-specifically regulated by various other hormone pathways and transcription factors. In this review, we summarize the recent advances in SAUR gene characterization in Arabidopsis and other plant species. We particularly elaborate (详尽说明) on their capacity to fine tune growth in response to internal and external signals, and discuss the breakthroughs (突破) in understanding the mode of action of the SAURs in relation to their complex regulation.

SAUR为一类生长素响应基因家族，在大多数植物物种中约有60到140个基因。除了早期发现这些基因能够相应生长素外，有关这些基因的功能及作用模式在很长的一段时间内都不清楚。近些年，SAUR基因在植物动态和适应性生长上的重要性，以及SAUR蛋白作用的分子机制越来越被重视起来。SAUR在生长素诱导的植物生长中发挥重要作用，但其又能够独立于生长素被各种其它激素通路和转录因子所组织特异性调控。本文综述了近来有关SAUR基因在拟南芥及其它物种中的功能鉴定。作者尤其突出了其在响应内部或外部信号时精细调控植物生长中的作用，并且讨论了有关SAUR蛋白在其复杂的调控中作用模式的突破性进展。

通讯：Marian Bemer（https://www.wur.nl/en/Persons/Marian-dr.-M-Marian-Bemer.htm）

doi: https://doi.org/10.1093/jxb/ery332

Journal: Journal of Experimental Botany

Published date: 18 September, 2018

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