Characterization of the complete chloroplast genome assembly of Engler, Pflanzenr (Araceae) from southwestern China.

Southwestern China is a biodiversity hotspot due to its diverse topography and environment. is a species of perennial herb that is mainly distributed throughout southwestern China. The genetic diversity and divergence in this species have not been assessed largely due to a lack of genomic resources. To help with the phylogeographic study, we sequenced and assembled the first complete chloroplast genome sequence of . The length of the chloroplast genome was 164,417 bp, with an average GC content of 36% (GenBank accession no. OR400247). The genome possessed a typical quadripartite structure, and the lengths of the large single-copy (LSC), small single-copy (SSC), and two inverted repeat (IR) regions were 92,149 bp, 15,182 bp, 28,543bp, and 28,543bp, respectively. A total of 128 genes were annotated across the genome, including 82 protein-coding genes, 8 rRNAs, and 38 tRNAs. The maximum likelihood (ML) phylogeny confirmed the phylogenetic position of within Araceae, with the species forming a single monophyletic clade with a high bootstrap value. The ML tree also indicated that was most closely related to . This newly sequenced chloroplast genome assembly will aid in future studies of genetic diversity, historical population dynamics, and geographic differentiation patterns of .