Structural and comparative analysis of the complete chloroplast genome of Pyrus hopeiensis—"wild plants with a tiny population"—and three other Pyrus species.

Pyrus hopeiensis is a valuable wild resource of Pyrus in the Rosaceae. Due to its limited distribution and population decline, it has been listed as one of the “wild plants with a tiny population” in China. To date, few studies have been conducted on P. hopeiensis. This paper offers a systematic review of P. hopeiensis, providing a basis for the conservation and restoration of P. hopeiensis resources. In this study, the chloroplast genomes of two different genotypes of P. hopeiensis, P. ussuriensis Maxin.cv. Jingbaili, P. communis L. cv. Early Red Comice, and P. betulifolia were sequenced, compared and analyzed.