Fig. 1

Circular map of chloroplast genome of Calamus tetradactylus with annotated genes. The different functional genes groups are shown in different colors, which are shown on the bottom left. The genes transcribed in clockwise and counterclockwise are shown inside and outside of the external circle, respectively. The inner circle represents that the quadripartite structure contains two copies of the inverted repeat (IR) region (IRA and IRB), which separate large single copy (LSC) and small single copy (SSC) region. The dark gray color of inner circle shows the GC content, and AT content in light gray