Figure 1

Phylogentic trees of plant BBX or PEBP family. The phylogenetic tree of plant BBX or PEBP genes reconstructed by MEGA 5.0 with the NJ method and the bootstrap test (1000). Soybean BBX or PEBP genes from soybean were in purple and from the algae in green. A, the phylogenetic tree of plant BBX gene family. The CO homologs were in different color background, and the blue branches were the candidate CO-lineage genes. B, the phylogenetic tree of plant PEBP gene family. Group I was in color background and Group II had no color. The motif organizations of the BBX or PEBP family based on the results of MEME and MAST, and different motifs were in different color, and the best match sequences was listed in Additional file 2. C, the motif organizations of different clusters of the BBX family. D, The motif organizations of different groups of the PEBP family.