Figure 7.

Phylogenetic analysis, gene structure and motif analysis of heavy-metal-associated genes in rice and Arabidopsis. (A) Phylogenetic tree of HMP proteins between rice and Arabidopsis. The maximum likelihood tree was created using MEGA v. 7.0. P1B-ATPase, ATCCS, H1, H2, H3, and H4 are marked with different colors. (B) Gene structure of HMP genes in rice and Arabidopsis. A schematic diagram was constructed by the Gene Structure Display Server 2.0. Exons, introns, and untranslated regions are marked by green double-sided wedge, black lines, and blue round-corner rectangles, respectively. The scale bar at the bottom estimates the lengths of the exons, introns, and untranslated regions. (C) Motif composition of HMP proteins in rice and Arabidopsis. Motif analysis was performed using the MEME program. Boxes of different colors represent the various motifs. Their location in each sequence is marked. Motif sequence logo is shown in Figure S4. The scale bar at the bottom indicates the lengths of the HMP protein sequences.