Characterization of the complete chloroplast genome of Fraxinus chiisanensis (Oleaceae), an endemic to Korea

Fraxinus chiisanensis (Oleaceae), endemic to South Korea, is a deciduous tree and its natural populations are facing extinction due to habitat deterioration and low germination rates. Here, we characterized the complete chloroplast (cp) genome of F. chiisanensis using next-generation sequencing to provide an effective approach for achieving phylogenetic resolution and a fundamental conservation strategy. The F. chiisanensis cp genome was 155,541 bp in length with a typical quadripartite structure, including the large (86,386 bp) and small (17,767 bp) single-copy regions, separated by a pair of identical inverted repeats (25,694 bp). The genome encoded 132 genes, of which 113 were unique, including 80 protein coding genes, 29 tRNA genes, and 4 rRNA genes. The overall GC content of the cp genome was 37.9%. The Bayesian inference phylogram showed that F. chiisanensis is sister to the rest of the tribe Oleeae within Oleaceae.