The complete chloroplast genome of Phellodendron chinense (Rutaceae), an Endangered medicinal plant in southern China

Abstract

Phellodendron chinense is an Endangered medicinal plant in southern China. In this study, the complete chloroplast genome sequence of P.chinense was characterized by de novo assembly. The length of the whole chloroplast genome was 158,537 bp, containing a large single copy region (LSC) of 86,250 bp and a small single copy region (SSC) of 18,287 bp, which were separated by a pair of 27,000 bp inverted repeat regions (IRs). The sequence contains 114 unique genes, including 30 tRNA, 4 rRNA, and 80 protein-coding genes. The overall GC content of the chloroplast genome is 38.4% and those in the LSC, SSC, and IR regions are 36.6, 33.2, and 42.9%, respectively. The phylogenetic analysis based on reported chloroplast sequences of Rutaceae showed that P. chinense is sister to P. amurense, consisting a monophyletic group, and that Phellodendron is closely related to Zanthoxylum.

Keywords: Phellodendron chinense; chloroplast genome; medicinal plant; phylogeny.

Figure 1.

Maximum likelihood tree of 19 Rutaceae species based on the complete plastid genome sequences. The number associated with the nodes are the bootstrap values.