Fig. 2

Phylogenetic relationships, gene structures, architecture of the conserved protein motifs and the cis-acting elements analysis of the FtHsf from Tartary buckwheat. a The phylogenetic tree was constructed based on the full-length sequences of Tartary buckwheat Hsf proteins using Geneious R11 software, including group A (A1, A2, A3, A4, A5, A6, A7, A8), group B (B1, B2, B3, B4) and group C (C1). b Exon-intron structures of Tartary buckwheat Hsf genes. Blue-green boxes indicate untranslated 5’- and 3’-regions; yellow boxes indicate exons; and black lines indicate introns. The Hsf domains are highlighted by pink boxes. The number indicates the phases of the corresponding introns. c The motif composition of the Tartary buckwheat Hsf proteins. The motifs, numbered 1–10, are displayed in different colored boxes. The sequence information for each motif is provided in Additional file 2. The length of the protein can be estimated using the scale at the bottom. d The cis-acting elements of the FtHsf promoter region, and different color blocks represent different elements