Fig. 1From: Complete plastome sequencing resolves taxonomic relationships among species of Calligonum L. (Polygonaceae) in ChinaGene map of the complete chloroplast genome of Calligonum. Arrows indicate the direction of transcription: genes located outside the outer circle are transcribed in the counter-clockwise direction, those inside are transcribed in the clockwise direction. Color codes represent different functional gene groups. Inside the middle circle, GC and AT content variations are indicated by darker and lighter gray, respectivelyBack to article page