Figure 1

Circos view of complete plastome of T. hamiensis var. qatarensis with related species. Genes shown on the outside outer circle are transcribed counterclockwise and, on the inside, clockwise. (Track 1) the pink color track show guanine-cytosine (GC) skew. The heatmap track from outside to inside is nucleotide diversity (Pi) of T. hamiensis var. qatarensis with three Tetraena species (track 2), five Zygophyllum species (track 3), and twelve species plastomes from the family Zygophyllaceae used in this study (track 4). The inner three heatmap tracks show SNP and InDels of T. hamiensis var. qatarensis with three Tetraena species (track 5), five Zygophyllum species (track 6), and twelve species plastomes from the family Zygophyllaceae (track 7). Dark green color links show the inverted repeats (IR) region of T. hamiensis var. qatarensis. The palindromic, forward, and reverse repeats are linked by lines in different colors: forward repeats (green), reverse repeats (light blue), and palindromic repeats (red) color. The heatmap was generated using CIRCOS (http://circos.ca/software/).