《生命科学》 2009, 21(1): 145-150

拟南芥R2R3-MYB类转录因子在环境胁迫中的作用

乔　孟，于延冲，向凤宁*

山东大学生命科学学院植物细胞工程与种质创新教育部重点实验室，济南250100

摘　要：摘　要：MYB转录因子是植物转录因子中最大的家族之一，以含有保守的MYB结构域为共同特征，分为三个亚族(R1/2-MYB、R2R3-MYB和R1R2R3-MYB），其中含有两个MYB结构域的R2R3-MYB成员最多，广泛参与植物次生代谢调控、细胞形态发生、胁迫应答、分生组织形成及细胞周期控制等。近年来，R2R3-MYB在植物逆境胁迫中的作用引起了广泛关注，本文综述了拟南芥R2R3-MYB蛋白在环境胁迫响应中作用的研究进展。
关键词：R2R3-MYB；胁迫响应；拟南芥

The roles of the Arabidopsis R2R3-MYB transcription factors in the stress responses

QIAO Meng， YU Yan-chong， XIANG Feng-ning*

Key Laboratory of Plant Cell Engineering and Germplasm Enhancement， Ministry of Education，Shandong University， Jinan 250100， China

Abstract: Abstract: MYB transcription factors comprise one of the largest Arabidopsis families characterized by the conserved MYB DNA-binding domain. MYB proteins can be classified into three subfamilies: R1/2-MYB，R2R3-MYB and R1R2R3-MYB. The R2R3 subfamily with two adjacent MYB domains contains the largest number of MYB genes， which plays various roles in many aspects， such as secondary metabolism， cell morphogenesis， stress responses， meristem formation and the cell cycle and so on. Recently， the roles of R2R3-MYB in the stress responses have been extensively studied. In this review， the applications and progresses about the Arabidopsis R2R3-MYB proteins in plant stress responses were discussed.
Key words: R2R3-MYB；stress response; Arabidopsis