The complete chloroplast genome of Goodyera yunnanensis Schltr.

Abstract

The family Orchidaceae is renowned for its extensive diversity. Within this family, the genus Goodyera R. Br. is classified under the subtribe Goodyerinae, comprising approximately 99 species. In this study, a species Goodyera yunnanensis Schltr., its plastid genome was characterized. The plastid genome of G. yunnanensis is 146,197 bp in size and exhibits a typical quadripartite structure with a pair of inverted repeat regions (IRs) of 25,611 bp, a large single-copy region (LSC) of 81,300 bp and a small single-copy region (SSC) of 13,675 bp. A total of 126 genes were identified, containing 80 protein-coding genes, 38 tRNA genes and 8 rRNA genes. The overall GC content is 37.2%, with corresponding values of 43.3%, 34.7% and 29.1% in IR, LSC and SSC regions, respectively. Forty-seven simple sequence repeats (SSRs) are found in G. yunnanensis plastome, and the frequency of mononucleotide repeats is significantly higher than other repeat types. Phylogenetic analysis indicates that Goodyera is resolved into four clades. G. yunnanensis belongs to the monophyletic clade A, and its phylogenetic position can be reasonably supported by morphological and molecular data.