Characterization of the complete chloroplast genome of Dalbergia hainanensis (Leguminosae), a vulnerably endangered legume endemic to China

Abstract

Dalbergia hainanensis is a vulnerably endangered tree species with high economic and ornamental value. The complete chloroplast (cp) genome of D. hainanensis was determined to provide the underlying information for genetic and conservation studies and explore possible phylogenetic relationship within leguminous family in this study by next generation Illumina pair-end sequencing dataset. The whole genome was 156,073 bp in length and contains a pair of 182,574 bp inverted repeats regions, which were separated by a large single copy region and a small single copy region of 85,831 and 18,838 bp in length, respectively. The cp genome contained 131 genes, including 86 protein-coding genes, 36 tRNAs and 8 rRNAs. The overall GC content of the whole genome was 36.09%. A neighbour-joining phylogenetic analysis suggested a close relationship between D. hainanensis and Arachis hypogaea.