Abstract
Hoya is the largest genus (about 350–450 species) within Apocynaceae. It is a subshrub or liana, epiphytic or epilithic. Most species grow in tropical and subtropical South and Southeast Asia. Here we report and characterize the complete plastid genome sequence of Hoya pottsii Traill and Hoya liangii Tsiang in an effort to provide genomic resources useful for promoting its systematics research. The complete plastome of H. pottsii is 161,565 bp in length, including two Inverted Repeat (IR) regions of 24,657 bp, a Large Single-Copy (LSC) region of 92,532 bp, and a Small Single-Copy (SSC) region of 19,719 bp. The plastome contains 115 genes, consisting of 81 unique protein-coding genes, 30 unique tRNA genes, and 4 unique rRNA genes. The overall A/T content in the plastome of H. pottsii is 62.40%. The complete plastome of H. liangii is 162,989 bp in length, including two IR regions of 24,841 bp, a LSC region of 93,292 bp, and a SSC region of 20,015 bp. The plastome contains 115 genes, consisting of 81 unique protein-coding genes, 30 unique tRNA genes, and 4 unique rRNA genes. The overall A/T content in the plastome of H. pottsii is 62.30%. The complete plastome sequence of H. pottsii and H. liangii will provide a useful resource for the conservation genetics of the two species as well as for the phylogenetic studies of Hoya.
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