Fig. 2

Schematics of the gene structure and conserved motifs in the PbrbHLH family. a Subgroup classification. Phylogenetic tree was generated using 197 PbrbHLH genes with MEGA7. The subgroup names were labeled accordingly. b Conserved motif analysis. Twenty distinct motifs were identified with MEME suite and each motif was represented with different color. c. Gene structural analysis