Regulation of AtbZIP1 Gene Expression by T-DNA Insertion in Arabidopsis thaliana

bZIP transcription factor family is one of the largest groups of the plant transcription factor families and plays an important role in plant growth and adaption to the abiotic stresses.In this study,two AtbZIP1 mutant Arabidopsis (bzip1) were used with T-DNA inserted into two different sites,designated as SALK-556773 and SALK-660942,in order to identify different effects on AtbZIP1 gene expression by different T-DNA insertion sites.PCR and RT-PCR results revealed that T-DNA insertion in CDS region could effectively inhibit AtbZIP1 gene expression,while T-DNA insertion in 3’-UTR couldn’t.The phenotype analysis further confirmed the differences and showed that T-DNA insertion in CDS region decreased plants’ drought resistance,while in 3’-UTR couldn’t.The phenotype assays also suggested that AtbZIP1 held pivotal roles in plant response to drought stress.