Gene Structures, Classification, and Expression Models of the DREB Transcription Factor Subfamily in Populus trichocarpa

Figure 1

Integrated systems analysis workflow for elucidation of the role of DREB subfamily in the bioinformatics and data analysis in Populus. A: A phylogenetic analysis was performed using all the DREB subfamily amino acid sequences from Arabidopsis and Populus by MEGA 4 software. B: Each of the DREB genes’ chromosomal position in Populus was using the Phytozome and Joint Genome Institute websites. C: The exon/intron organization for individual DREB genes was using the gene structure display server (GSDS) program and motif analysis was performed using the program MEME (v4.3.0). D: Gene expression profiling of Populus DREB subfamily was used to characterize differentially expressed genes.