拟南芥钙调素结合转录因子CAMTA在植物抗逆中的研究进展  

Progress on the Function of Calmodulin Binding Transcription Activator CAMTA in Arabidopsis thaliana

作　　者：张明慧 曹俊峰 解莉楠[1,2] Zhang Minghui;Cao Junfeng;Xie Linan(Key Laboratory of Northeast Salinity and Vegetation Restoration and Reconstruction,Ministry of Education,Northeast Forestry University,Harbin,150040;College of Life Sciences,Northeast Forestry University,Harbin,150040)

机构地区：[1]东北林业大学,东北盐碱植被恢复与重建教育部重点实验室,哈尔滨150040 [2]东北林业大学生命科学学院,哈尔滨150040

出　　处：《分子植物育种》2021年第1期158-163,共6页Molecular Plant Breeding

基　　金：国家自然科学基金(31801444);黑龙江省博士后资助项目(LBH-Z14009)共同资助。

摘　　要：钙离子作为重要的第二信使,被钙调素感受并形成复合物后,会结合多种转录因子,进而调控下游靶基因,参与调控生物体的生长发育过程。那些被Ca2+/Ca M复合物识别,同时能够调控下游靶基因的调控因子是信号转导途径中的关键环节。钙调蛋白结合转录激活因子(calmodulin-binding transcription activator,CAMTA)是一类重要的钙调型结合转录因子。普遍存在多细胞真核生物中作为Ca M结合蛋白之一,响应一系列环境胁迫和激素信号,在植物生物胁迫、非生物胁迫和植物生长发育过程发挥了重要的调控作用。研究发现,拟南芥中有6个CAMTA家族成员,可以响应干旱、盐、冷等环境胁迫,还可以响应ABA、乙烯等激素信号。本研究总结了拟南芥中CAMTA的结构特征及其在植物抗逆中的研究进展,并展望了CAMTA的研究前景。对CAMTA的深入理解将有助于进一步探究其在植物抗逆中作用,并为应用于抗逆性植物分子育种提供思路。As an important second messenger,Ca2+which is sensed by calmodulin and formed into a complex,bound to transcription factors,then regulates the downstream target genes and participates in the regulation of the growth and development of organisms.The regulatory factors recognized by the Ca2+/Ca M complex and capable of regulating the downstream target genes are the key links in the signal transduction pathway.Calmodulin-binding transcription activator(CAMTA)is an important and ubiquitous gene family in multicellular eukaryotes.CAMTA,as one of the Ca M binding proteins,responds to a series of environmental stresses and hormone signals,and plays an important regulatory role in plant biotic,abiotic stress and plant growth and development.The results showed that there were six members of the CAMTA family in Arabidopsis thaliana,which could respond to drought,salt,cold and other environmental stresses,as well as hormone signals such as ABA and ethylene.This review summarizes the structural characteristics of CAMTA,its mechanism and research progress in plant stress resistance.Finally,this paper prospects the research CAMTA.A well understanding of CAMTA will be helpful to explore its role in plant stress response and provide ideas for its application in molecular breeding of stress resistant plants.

关 键 词：CAMTA 拟南芥 逆境胁迫 

分 类 号：S336[农业科学—作物遗传育种]