农业生物技术学报2017，Vol.25Issue(4)：668-682,15.DOI:10.3969/j.issn.1674-7968.2017.04.017
WRKY转录因子在生物和非生物胁迫中的功能和调控机理的研究进展
The Functions and Regulation Mechanisms of WRKY Transcription Factors in Response to Biotic and Abiotic Stresses
摘要
Abstract
WRKY transcription factors are one of the largest families of transcription regulators in plants,and it can bind W-box in promoters of the target genes to regulate many specific transcriptional programs.This article summarized the recent advances on WRKY transcription factor functions and regulation mechanisms on biotic and abiotic stress responses in Arabidopsis and rice (Oryza sativa).The expressions of WRKY genes can be rapidly induced by many environmental signals.Many WRKY genes exhibit extensive autoregulation and cross-regulation.A single WRKY transcription factor can regulate several seemingly disparate processes,and several WRKY proteins can also work together in the same process to make the signal transduction pathway to be exactly regulated.WRKY proteins via cooperation with a diverse array of protein partners realize their functions,and they are usually phosphorylated by mitogen-activated protein kinase to modulate their activities in the nucleus.WRKY transcription factors in Group Ⅰ and Ⅱ c can interact with VQ proteins that contain a short VQ motif and act as cofactors,and those in group Ⅱ d contain C motif that can bind with calmodulin.In addition,the WRKY domain in RRS 1-R represents an effector target'decoy'which betrays the defense-suppressing abilities of PopP2 and AvrRps4 on their operational virulence targets,the defensive WRKY transcription factors.WRKY transcription factors play pivotal roles in regulating many stress reactions,but only a few mechanisms on signaling and transcriptional regulations are characterized more clearly.This article has revealed a comer of the complex regulatory network,and may help researchers to further understand the regulatory mechanisms of WRKY transcription factors.关键词
WRKY转录因子/生物和非生物胁迫/应答反应/拟南芥/水稻Key words
WRKY transcription factor/Biotic and abiotic stress/response/Arabidopsis/Rice分类
农业科技引用本文复制引用
陈思雀,翁群清,曹红瑞,孙新立..WRKY转录因子在生物和非生物胁迫中的功能和调控机理的研究进展[J].农业生物技术学报,2017,25(4):668-682,15.基金项目
国家自然科学基金(No.31371557)、福建省自然科学基金(No.K55NI921A)和福建省教育厅项目(No.K58MLV03A) （No.31371557）
