A chromosome-level genome assembly of the Knoxia roxburghii (Rubiaceae)

作者：Zhang, Yingmin; Zhang, Fan; Jin, Ling; Zhang, Ticao; Pu, Xinying; Qiu, Bin^*; Li, Guodong^*

来源：Scientific Data, 2023, 10(1): 803.

DOI：10.1038/s41597-023-02725-8

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Knoxia roxburghii is a well-known medicinal plant that is widely distributed in southern China and Southeast Asia. Its dried roots, known as hongdaji in traditional Chinese medicine, are used to treat a range of diseases, including cancers, carbuncles, and ascites. In this study, we report a de novo chromosome-level genome sequence for this diploid plant, which has a length of approximately 446.30 Mb with a contig N50 size of 42.26 Mb and scaffold N50 size of 44.38 Mb. Approximately 99.78% of the assembled sequences were anchored to 10 pseudochromosomes and 3 gapless assembled chromosomes were included in this assembly. A total of 24,507 genes were annotated, along with 68.92% of repetitive elements. Overall, our results will facilitate further active component biosynthesis for K. roxburghii and provide insights for future functional genomic studies and DNA-informed breeding.

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  云南大学