GT元件是位于植物基因启动子区域中的串联重复DNA序列, 是启动子中富含T和A的顺式作用元件。迄今已经在不同植物中鉴定了一些GT元件并分析了其功能。GT因子是以三螺旋基序为DNA结合域, 与GT元件特异结合的一类转录因子。到目前为止, 仅在植物中发现有GT因子。GT因子与GT元件相互作用调节相关基因的转录, 进而提高植物的抗性或影响植物形态建成。文章就植物中不同的GT元件及GT因子的发现、结构及二者相互作用等方面进行了综述。

GT elements are DNA sequences occurred in tandem repeats in the promoter region of plant genes, which are rich in nucleotides T and A in promoters. A few GT elements and their functions have been characterized in different plants. Factors GT are transcription factors with trihelix motifs for DNA-binding domains and specific binding to GT elements. Presently, GT factors are only observed in plants. The interaction of GT factors and GT elements can regulate the transcrip-tion of related genes and improve resistance of plants or involve in plant morphogenesis. In this article, we summarized the discover, structure, and interaction of GT factors and GT elements.