Genome-Wide Identification, Structural Characterization, and Gene Expression Analysis of BES1 Transcription Factor Family in Tartary Buckwheat (Fagopyrum tataricum)

The transcription factor (TFs) BES1, which mediates brassinosteroid (BR) signaling, regulates plant growth and development. However, BES1 genes have not yet been reported in Tartary buckwheat. Here, ten FtBES1 were identified the buckwheat genome, they named FtBES1-1 to FtBES1-10. These divided into four groups according classification Arabidopsis thaliana. Multiple sequence alignment indicated that all gene members contained BES1_N structural domain. Phylogenetic relationship same group had similar structures motifs. An analysis of cis-acting elements demonstrated TFs contains many light-responsive, hormonal, abiotic stress-responsive elements, etc. 10 located on chromosomes buckwheat, distribution synteny revealed segmental duplications played important roles family expansion. Tissue specificity expressed highly two periods, relatively high expression levels observed mature leaves. Gene profiles under different hormone treatments participated stress response. This study enriches our knowledge provides a theoretical basis for analyzing biological functions tolerance mechanisms factors.