The complete chloroplast genome sequence of Dendrobium wangliangii (Orchidaceae)

Shi-Cheng Shao; Lu Tang; Yan Luo

doi:10.1080/23802359.2020.1827063

The complete chloroplast genome sequence of Dendrobium wangliangii (Orchidaceae)

Mitochondrial DNA B Resour. 2020 Oct 7;5(3):3495-3497. doi: 10.1080/23802359.2020.1827063.

Authors

Shi-Cheng Shao¹, Lu Tang^{1

2}, Yan Luo^{1

3}

Affiliations

¹ Gardening and Horticulture Department, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Yunnan, P.R. China.
² College of Forestry, Shanxi Agricultural University, Shanxi, P.R. China.
³ Gardening and Horticulture Department, Core Botanical Gardens, Chinese Academy of Sciences, Yunnan, P.R. China.

Abstract

Dendrobium wangliangii is a rare orchid species with extremely small populations, endemic to China. In this study, the complete chloroplast (cp) genome sequence and the genome features of D. wangliangii were analyzed. The whole cp genome sequence of D. wangliangii is 160,052 including a large single-copy region (LSC, 87,525 bp), a small single-copy region (SSC, 18,373 bp), and a pair of repeat regions (IRs, 27,077 bp, each). The contents of four bases in cpDNA were A (30.9%), C (18.9%), G (18.3%) and T (31.9%), respectively. The total content of GC is 37.1%. The cp genome contains 129 genes, consisting of 124 unique genes (78 protein-coding genes, 38 tRNAs, and 8 rRNAs). Phylogenetic analysis showed that D. wangliangii nested with other Dendrobium spp. and was closely related to D. ellipsophyllum, D. wattii and D. longicornu.

Keywords: Dendrobium wangliangii; chloroplast genome; phylogenetic analysis Orchidaceae.

Grants and funding

This study was funded by the National Key R & D Program of China under grants [No. 2017YFC0505204] and the National Natural Science Foundation of China [grant No. 31870183].