Complete plastome sequence of Changiostyrax dolichocarpa (Styracaeae): An endangered (EN) plant species endemic to China

Abstract

Changiostyrax dolichocarpa is a critically endangered plant species occurring in central and southeastern China. Although the systematic position of Changiostyrax was still unclear, morphological characters, plastid and nSSR evidence supported that C. dolichocarpa should be separated from Sinojackia (Styracaceae). Here, we report and characterize the complete plastid genome sequence of C. dolichocarpa in an effort to provide genomic resources useful for promoting its conservation. The complete plastome is 158,821 bp in length and contains the typical structure and gene content of angiosperm plastome, including two inverted repeat (IR) regions of 26,000 bp, a large single copy (LSC) region of 88,038 bp and a small single copy (SSC) region of 18,784 bp. The plastome contains 120 genes, consisting of 83 unique protein-coding genes, 37 unique tRNA gene, and eight unique rRNA genes. The overall A/T content in the plastome of C. dolichocarpa is 62.70%. The complete plastome sequence of C. dolichocarpa will provide a useful resource for the conservation genetics of this species as well as for the phylogenetic studies for Changiostyrax.