WRKY转录因子的结构及其在植物抗逆境胁迫中的功能

The Structure and Function of WRKY Transcription Factors in Abiotic and Biotic Stress

WRKY转录因子是一超级基因家族,广泛存在于高等植物界,参与了植物的多种生理生化与生长发育过程,在植物应对外界逆境胁迫发挥了十分重要的功能。WRKY超级基因家族由于其N端包括保守的WRKYGQK氨基酸序列而得名,通过其保守的氨基酸序列与靶标基因启动子区W-box相互结合,从而对靶标基因进行表达调控。本文主要综述了WRKY基因的结构特征及其在植物应答外界逆境胁迫过程中的功能,为进一步研究WRKY超级基因家族提供有益的启示。

WRKY transcription factors are the super transcriptional regulatory factors in higher plants in which N- terminal ends contain a conserved WRKYGQK amino acids sequences. Family members appear to be involved in the regulation of various physiological programs. By specifically binding to W-box （T）（T）TGAC（C/T） sequence in the promoter regions, WRKY transcription factors regulate the genes expression .In the article, we review the progress of WRKY transcriptional regulatory factors basic structure and biological function in abiotic and biotic stresses.