School of Ocean Sciences, China University of Geosciences, Beijing, 100083, China.
Key Laboratory of Marine Eco-Environmental Science and Technology, First Institute of Oceanography, Ministry of Natural Resources, Qingdao, 266061, China.
Sci Data. 2024 May 30;11(1):560. doi: 10.1038/s41597-024-03412-y.
The cold-water species Ophiura sarsii, a brittle star, is a key echinoderm in the Arctic continental shelf region, highly sensitive to climate change. However, the absence of a high-quality genome has hindered a thorough understanding of its adaptive evolution. In this study, we reported the first chromosome-level genome assembly of O. sarsii. The genome assembly totalled 1.57 Gb, encompassing 19 chromosomes with a GC content of 37.11% and a scaffold N50 length of 78.03 Mb. The Benchmarking Universal Single-Copy Orthologs (BUSCO) assessment yielded a completeness estimate of 93.5% for this assembly. We predicted a total of 27,099 protein-coding genes, with 25,079 functionally annotated. The genome was comprised of 58.09% transposable elements. This chromosome-level genome of O. sarsii contributes to our understanding of the origin and evolution of marine organisms.
冷水种蛇尾 Ophiura sarsii 是北极大陆架地区的一种关键棘皮动物，对气候变化高度敏感。然而，由于缺乏高质量的基因组，我们对其适应性进化仍缺乏深入了解。在这项研究中，我们报道了 O. sarsii 的首个染色体水平的基因组组装。该基因组组装总共为 1.57Gb，包含 19 条染色体，GC 含量为 37.11%，支架 N50 长度为 78.03Mb。针对该组装进行的评估显示，BUSCO（基准通用单拷贝同源物）的完整性估计值为 93.5%。我们总共预测了 27099 个蛋白质编码基因，其中 25079 个具有功能注释。该基因组由 58.09%的转座元件组成。O. sarsii 的这种染色体水平的基因组有助于我们理解海洋生物的起源和进化。
