Fig. 2

Phylogenetic relationship, gene structure, motif distribution, and cis-acting elements of sugar beet SPL genes. Among them, the number marked on the Node represents the confidence level. (A) Phylogenetic tree of the sugar beet SPL family, each node has 1000 repetitions. (B) Schematic diagram of the gene structure of sugar beet SPL genes, including UTR (untranslated region), CDS (coding sequence), domains (SBP, ANK domains), and introns (Number indicates the phase of the corresponding intron.). Light green represents UTR, yellow represents CDS, pink represents the structural domain SBP, and dark green represents structural domain ANK. (C) Conserved amino acid motifs (motifs 1–10) in BvSPL proteins: the line represents the relative length of the protein. (D) Cis-acting elements in the 2000 bp promoter sequence upstream of the BvSPL genes; different color blocks represent different cis-acting elements