Draft genome sequence of the Tibetan medicinal herb Rhodiola crenulata

文献类型： 外文期刊

第一作者： Fu, Yuanyuan

作者： Fu, Yuanyuan;Sun, Xiao;Fu, Yuanyuan;Li, Liangwei;Hao, Shijie;Guan, Rui;Fan, Guangyi;Shi, Chengcheng;Wan, Haibo;Chen, Wenbin;Zhang, He;Liu, Guocheng;Ni, Xuemei;Yue, Zhen;Xu, Xun;Liu, Xin;Fu, Yuanyuan;Li, Liangwei;Guan, Rui;Fan, Guangyi;Wan, Haibo;Zhang, He;Fan, Guangyi;Lee, Simon Ming-Yuen;Fan, Guangyi;Lee, Simon Ming-Yuen;Wang, Jihua;Ma, Lulin;You, Jianling

作者机构：

关键词： Rhodiola crenulata;genomics;genome assembly;annotation

期刊名称：GIGASCIENCE （ 影响因子：6.524； 五年影响因子：8.702 ）

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年卷期：

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收录情况： SCI

摘要： Rhodiola crenulata, a well-known medicinal Tibetan herb, is mainly grown in high-altitude regions of the Tibet, Yunnan, and Sichuan provinces in China. In the past few years, increasing numbers of studies have been published on the potential pharmacological activities of R. crenulata, strengthening our understanding into its putitive active ingredient composition, pharmacological activity, and mechanism of action. These findings also provide strong evidence supporting the important medicinal and economical value of R. crenulata. Consequently, some Rhodiola species are becoming endangered because of overexploitation and environmental destruction. However, little is known about the genetic and genomic information of any Rhodiola species. Here we report the first draft assembly of the R. crenulata genome, which was 344.5 Mb (25.7 Mb Ns), accounting for 82% of the estimated genome size, with a scaffold N50 length of 144.7 kb and a contig N50 length of 25.4 kb. The R. crenulata genome is not only highly heterozygous but also highly repetitive, with ratios of 1.12% and 66.15%, respectively, based on the k-mer analysis. Furthermore, 226.6 Mb of transposable elements were detected, of which 77.03% were long terminal repeats. In total, 31 517 protein-coding genes were identified, capturing 86.72% of expected plant genes in BUSCO. Additionally, 79.73% of protein-coding genes were functionally annotated. R. crenulata is an important medicinal plant and also a potentially interesting model species for studying the adaptability of Rhodiola species to extreme environments. The genomic sequences of R. crenulata will be useful for understanding the evolutionary mechanism of the stress resistance gene and the biosynthesis pathways of the different medicinal ingredients, for example, salidroside in R. crenulata.

分类号： S

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