College of Food Science and Technology, Yunnan Agricultural University, Kunming, Yunnan, 650201, China.
Yunnan Provincial Key Laboratory of Biological Big Data, Yunnan Agricultural University, Kunming, Yunnan, 650201, China.
Sci Data. 2024 Aug 13;11(1):873. doi: 10.1038/s41597-024-03670-w.
Dracaena cambodiana Pierre ex Gagn. (Asparagaceae) is the source plant of Dragon's blood and has high ornamental values in gardening. Currently, this species is classified as the second-class state-protected species in the National Key Protected Wild Plants (NKPWP) of China. However, limited genomic data has hindered a more comprehensive scientific understanding of the processes involved in the production of Dragon's blood and the related conservation genomics research. In this study, we assembled a haplotype-resolved genome of D. cambodiana. The haploid genomes, haplotype A and haplotype B, are 1,015.22 Mb and 1,003.13 Mb in size, respectively. The completeness of haplotype A and haplotype B genomes was 98.60% and 98.20%, respectively, using the "embryophyta_10" dataset. Haplotype A and haplotype B genomes contained 27,361 and 27,066 protein-coding genes, respectively, with nearly all being functionally annotated. These findings provide new insights into the genomic characteristics of D. cambodiana and will offer additional genomic resources for studying the biosynthesis mechanism of Dragon's blood and the horticultural application of Dragon trees.
龙血树（Dracaena cambodiana Pierre ex Gagn.）（天门冬科）是龙血竭的来源植物，具有很高的园艺观赏价值。目前，该物种被列为中国国家重点保护野生植物（NKPWP）的二级保护物种。然而，有限的基因组数据阻碍了对龙血竭生产过程的更全面的科学理解以及相关的保护基因组学研究。在这项研究中，我们组装了龙血树的单倍型分辨率基因组。单倍型 A 和单倍型 B 的基因组大小分别为 1,015.22 Mb 和 1,003.13 Mb。使用“embryophyta_10”数据集，单倍型 A 和单倍型 B 基因组的完整性分别为 98.60%和 98.20%。单倍型 A 和单倍型 B 基因组分别包含 27,361 个和 27,066 个蛋白质编码基因，几乎所有基因都具有功能注释。这些发现为龙血树的基因组特征提供了新的见解，并将为研究龙血竭的生物合成机制以及龙血树的园艺应用提供额外的基因组资源。
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