Fig. 3

Sequence identity plot of the seven Alpinia plastomes with Zingiber spectabile as a reference by mVISTA. The species names are shown to the left. The grey arrows above the alignment indicate the transcription direction of genes. In the alignment box, the blue color box indicates protein-coding, the pink color box shows the conserved noncoding sequence, and the light green box indicates tRNAs and rRNAs. The x-axis represents the positions in the cp. genome, and the Y-scale represents the percent identity ranging from 50–100 %