Fig. 7

Phylogenetic relationships, gene structures and compositions of the conserved protein motifs of the Al-responsive AhRLKs. a The phylogenetic tree was constructed based on the full-length amino acid sequences of Al-responsive AhRLKs using MAGA 7. b Exon–intron structures of Al-responsive AhRLKs. Green boxes indicate untranslated 5'- and 3'-regions; yellow boxes indicate exons, and black lines indicate introns. c The motif compositions of the Al-responsive AhRLKs. The motifs, numbered 1–5, are displayed in different coloured boxes. The scale bar at the bottom indicates the base pair of genes