Phylogenetic relationship and characterization of the complete chloroplast genome of Panax notoginseng, the endemic medicinal herbs to China

摘要

Panax notoginseng is the most important valued and endemic medicinal herb to China. It belongs to the Araliaceae family, which has a longer medical history in China. The complete chloroplast genome of Panax notoginseng is 156,387?bp in size and displays a typical quadripartite structure of the large single-copy region (LSC, 86,112?bp), small single-copy region (SSC, 18,005?bp) that separate by a pair of inverted repeat regions (IRs, each for 26,135?bp). The base nucleotide composition of the cpDNA is 30.8% of A, 31.1% of T, 19.9% of C, and 18.2% of G, with a total G?+?C content of 38.1%. The whole chloroplast genome of P. notoginseng contains 134 genes, including 89 protein-coding genes (PCGs), 37 transfer RNA (tRNAs) genes, and eight ribosomal RNA (rRNAs) genes species. Phylogenetic relationship analysis based on 37 medicinal herbs species confirmed the position of P. notoginseng closely related to Panax japonicus and Panax vietnamensis .