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Published on: March 8, 2018
The complete chloroplast genome sequence of Cypripedium tibeticum King Ex Rolfe (Orchidaceae)
Jianfang Li1, Bei Xu1, Qian Yang1
1Key Laboratory of Resource Biology and Biotechnology in Western China (Ministry of Education), College of Life Sciences, Northwest University, Xi'an, Shaanxi, China.
Abstract:
In this study, we determined the complete chloroplast genome of Cypripedium tibeticum, an endangered species in China. The plastome is 159,223 bp in length, with a large single-copy region (LSC) of 86,537 bp, a small single-copy region (SSC) of 17,552 bp, and a pair of inverted repeat regions (IRs) of 27,567 bp each. It contains 133 genes, including 87 protein-coding genes, 38 tRNA genes, and 8 rRNA genes. The overall GC content was 36.9%, while the corresponding values in the LSC, SSC, and IR regions are 34.6, 30.4, and 42.6%, respectively. The phylogenetic analysis showed that C. tibeticum was closely related to its congeners and the classification of five subfamilies of Orchidaceae was also highly supported.
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