拟南芥钙调素结合转录因子CAMTA在植物抗逆中的研究进展

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+/CaM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 activ...

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

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.