摘要
盐胁迫是影响植物生长、发育及作物产量的重要环境因子。在植物响应高盐胁迫的过程中,许多基因被激活,并产生了许多抵御盐胁迫的蛋白。这些胁迫诱导基因的表达大多由转录因子调控。MYB转录因子广泛存在于真核生物中,是一类数量较多、功能多样的转录因子家族。MYB蛋白在包括盐胁迫在内的植物非生物胁迫调控中有重要作用。MYB转录因子在结构上具有多样性,因此对植物盐胁迫的调控机制较为复杂。近年来,随着研究手段的提高,MYB家族转录因子,尤其是R2R3-MYB,在盐胁迫调控中的作用机制得到了较为深入的研究。此外,越来越多的MYB-related蛋白也被证实参与了植物盐胁迫的调控。本文论述了MYB转录因子的结构特征和不同类型MYB蛋白在盐胁迫调控中的功能及作用机制,以期为MYB转录因子的研究和利用提供参考。
Salt stress is a major environmental factor that affects plant growth, development and crop yields adversely. During plant response and adaptation to salt stress, many genes are activated, leading to accumulation of numerous proteins involved in resistance to salt stress. The expression of stress-induced genes is largely regulated by specific transcription factors（TFs）. The MYB transcription factor family is large, functionally diverse and represent in all eukaryotes. MYB proteins function in a variety of plant-specific processes and they are proved to be key factors in regulatory networks controlling abiotic stresses including salt stress. Because of the structure diversity of MYB TFs, the regulation mechanisms of MYB are very complicated during salt stress regulation. In recent years, with an increase in research methods, the function mechanisms of MYB transcription factors, especially the R2R3-MYB members, have been studied deeply in plant salt stress regulation. Additionally, an increasing number of MYB-related proteins have also been demonstrated to be involved in the regulation of plant salt stress. In this review, we describe the structure of MYB proteins and summarize the research progress in different types of MYB TFs in plant salt stress regulation. We focus on the function and mechanism of this diversity transcription factor family so as to provide reference for further study and utilization.
出处
《植物生理学报》
CAS
CSCD
北大核心
2015年第9期1395-1399,共5页
Plant Physiology Journal
基金
国家产业体系(CARS-14)
山东省自然科学基金(ZR2011-CQ036
ZR2012CQ031
ZR2014YL011
ZR2014YL012)
国家自然科学基金(31000728
31200211)
青岛市科技计划[12-1-4-11-(2)-jch
14-2-3-34-nsh]
农业部油料作物生物学与遗传育种重点实验室开放课题基金(2014010)
关键词
植物
盐胁迫
MYB转录因子
plant
salt stress
MYB transcription factor
作者简介
通讯作者（E-mail：yshanlin1956@163．com；Tel：0532-87626830）。
