Fig. 1. Phylogenetic tree, exon-intron structures, and conserved motifs of the LAC genes from P. euphratica (Peu) and A. thaliana (At).

A maximum likelihood (ML) phylogenetic tree was generated with RaxML software using amino acid sequences; the PpLAC gene was used as an outgroup from Physcomitrella patens. All LACs in the tree clustered into six clades (I–VI), which are shown with differently colored backgrounds. The lengths of the introns and exons are shown proportionally for each LAC gene. Exons are shown as solid blue boxes, and introns are shown as black lines. The motifs were determined using MEME and are shown as differently colored boxes. The numbers and colors represent motifs 1–10. The lengths of the motifs are indicated by the corresponding box size