AP2功能基因在植物花发育中的重要作用

The Important Role of AP2 Functional Genes in Plant Floral Development

AP2基因作为调控植物花发育的功能基因,参与花分生特性建立、花器官的特性特化以及形成调控。所编码的AP2/EREBP转录因子的主要特征是都至少含有一个由60到70个左右的氨基酸组成高度保守的DNA结合区,称作AP2结合域。按其所含的AP2结构域的数目分为3个亚族,即AP2亚家族、EREBP亚家族和RAV亚家族,每个亚家族都有各自的作用。AP2基因不但自身调控着花、胚珠的发育,而且与其他因子相互协作,参与到复杂的花发育调控网络。将对AP2基因的特征和分类及其在花发育中的作用进行概述。

AP2 gene as functional genes which regulate the flower development,involved in the establishment of floral meristem identity,the specification of flower organ identity and the regulation of floral organogenesis. The AP2/EREBP family genes have a DNA- binding domain that consists of approximately 60 - 70 conserved amino acid residues, named of AP2 domain. According to the number of AP2 domain,the AP2/EREBP family can be devided into three subfamily,including AP2 subfamily,ERF subfamily and RAV subfamily,which features different function. AP2 not only regulates the development of flower and ovule,but also cooperate with other factors involved in the complex regulatory networks of the flower development. In this paper the characteristics and classification of AP2 gene and its role in the flower development of plants were described.