Characterization of complete chloroplast genome of traditional Chinese medical plants Paris Mairei and its phylogenetic positions

The genus Paris (Liliaceae) has been used for traditional medicine in China. The wild Paris was on the verge of exhaustion due to illegal and immoderate exploitation coupled with environmental pollution. In order to alleviate resource pressure, Paris mairei can be considered as alternative sources. Here, we report the complete chloroplast genome of Paris mairei. The genome is 162,736 bp in length including a small single-copy region (SSC, 12,908 bp) and a large single-copy region (LSC, 84,286 bp) separated by a pair of inverted repeats (IRs; 32,771 bp). The genome contained 113 genes, including 79 protein-coding genes, 4 ribosomal RNA genes, and 30 tRNA genes. Among these genes, 16 harboured a single intron, and 2 contained a couple of introns. The overall G + C content of the cpDNA is 37.1%, while the corresponding values of the LSC, SSC, and IR regions are 35.7, 32.1, and 39.9%, respectively. The complete chloroplast genome sequence of Paris mairei will provide a useful resource for the conservation genetics of this species as well as for the phylogenetic studies for the genus Paris.