Characterization of the complete plastid genome of a Chinese endemic species .

is an importantly economic tree species in Juglandaceae, which is critically endangered and endemic to Guizhou, China. The plastid genome of was assembled and characterized based on Illumina pair-end sequencing data using genome skimming approach. The complete plastid genome is 175,313 bp in length, with a GC content of 35.8%. It is a typical quadripartite structure, containing a large single copy (LSC) region of 89,858 bp and a small single copy (SSC) region of 3569 bp separated by a pair of extremely extensive inverted repeats (IRs) of 40,943 bp. A total of 142 genes were annotated, including 94 protein-coding genes, 40 tRNA genes, and eight rRNA genes. A maximum likelihood (ML) phylogenetic tree on plastid genomes revealed that is close to . The newly characterized complete plastid genome of will provide essential data for further studies of this endangered species.