Genome sequence of the barred knifejaw Oplegnathus fasciatus (Temminck & Schlegel, 1844): the first chromosome-level draft genome in the family Oplegnathidae
文献类型：期刊论文
| 作者 | Xiao, Yongshuang1,2,3; Xiao, Zhizhong1,2,3; Ma, Daoyuan1,2,3; Liu, Jing1,2,3; Li, Jun1,2,3 |
| 刊名 | GIGASCIENCE
 |
| 出版日期 | 2019-03-01 |
| 卷号 | 8期号:3页码:8 |
| 关键词 | Oplegnathus fasciatus chromosome-level genome assembly Hi-C assembly sex-determining mechanism |
| ISSN号 | 2047-217X |
| DOI | 10.1093/gigascience/giz013 |
| 通讯作者 | Liu, Jing(jliu@qdio.ac.cn) ; Li, Jun(junli@qdio.ac.cn) |
| 英文摘要 | Background: The barred knifejaw (Oplegnathus fasciatus), a member of the Oplegnathidae family of the Centrarchiformes, is a commercially important rocky reef fish native to East Asia. Oplegnathus fasciatus has become an important fishery resource for offshore cage aquaculture and fish stocking of marine ranching in China, Japan, and Korea. Recently, sexual dimorphism in growth with neo-sex chromosome and widespread biotic diseases in O. fasciatus have been increasing concern in the industry. However, adequate genome resources for gaining insight into sex-determining mechanisms and establishing genetically resistant breeding systems for O. fasciatus are lacking. Here, we analyzed the entire genome of a female O. fasciatus fish using long-read sequencing and Hi-C data to generate chromosome-length scaffolds and a highly contiguous genome assembly. Findings: We assembled the O. fasciatus genome with a total of 245.0 Gb of raw reads that were generated using both Pacific Bioscience (PacBio) Sequel and Illumina HiSeq 2000 platforms. The final draft genome assembly was approximately 778.7 Mb, which reached a high level of continuity with a contig N50 of 2.1 Mb. The genome size was consistent with the estimated genome size (777.5 Mb) based on k-mer analysis. We combined Hi-C data with a draft genome assembly to generate chromosome-length scaffolds. Twenty-four scaffolds corresponding to the 24 chromosomes were assembled to a final size of 768.8 Mb with a contig N50 of 2.1 Mb and a scaffold N50 of 33.5 Mb using 1,372 contigs. The identified repeat sequences accounted for 33.9% of the entire genome, and 24 003 protein-coding genes with an average of 10.1 exons per gene were annotated using de novo methods, with RNA sequencing data and homologies to other teleosts. According to phylogenetic analysis using protein-coding genes, O. fasciatus is closely related to Larimichthys crocea, with O. fasciatus diverging from their common ancestor approximately 70.5-88.5 million years ago. Conclusions: We generated a high-quality draft genome for O. fasciatus using long-read PacBio sequencing technology, which represents the first chromosome-level reference genome for Oplegnathidae species. Assembly of this genome assists research into fish sex-determining mechanisms and can serve as a resource for accelerating genome-assisted improvements in resistant breeding systems. |
| 资助项目 | National Natural Science Foundation of China[41506170] ; National Natural Science Foundation of China[31672672] ; National Natural Science Foundation of China[31872195] ; Shandong Province Key Research and Invention Program[2017GHY15102] ; Shandong Province Key Research and Invention Program[2017GHY15106] ; Qingdao Source Innovation Program[17-1-1-57-jch] ; Marine Fishery Institute of Zhejiang Province ; Key Laboratory of Mariculture and Enhancement of Zhejiang Province[2016KF002] ; National Key Research and Development Program[2018YFD0901204] ; STS project[KFZD-SW-106] ; STS project[ZSSD-019] ; Qingdao National Laboratory for Marine Science and Technology[2015ASKJ02] ; China Agriculture Research System[CARS-47] |
| WOS研究方向 | Science & Technology - Other Topics |
| 语种 | 英语 |
| WOS记录号 | WOS:000466726800011 |
| 出版者 | OXFORD UNIV PRESS |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/161376]  |
| 专题 | 中国科学院海洋研究所 |
| 通讯作者 | Liu, Jing; Li, Jun |
| 作者单位 | 1.Chinese Acad Sci, Inst Oceanol, 7 Nanhai Rd, Qingdao 266071, Peoples R China 2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Biol & Biotechnol, 7 Nanhai Rd, Qingdao 266071, Peoples R China 3.Chinese Acad Sci, Ctr Ocean Mega Sci, 7 Nanhai Rd, Qingdao 266071, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xiao, Yongshuang,Xiao, Zhizhong,Ma, Daoyuan,et al. Genome sequence of the barred knifejaw Oplegnathus fasciatus (Temminck & Schlegel, 1844): the first chromosome-level draft genome in the family Oplegnathidae[J]. GIGASCIENCE,2019,8(3):8. |
| APA | Xiao, Yongshuang,Xiao, Zhizhong,Ma, Daoyuan,Liu, Jing,&Li, Jun.(2019).Genome sequence of the barred knifejaw Oplegnathus fasciatus (Temminck & Schlegel, 1844): the first chromosome-level draft genome in the family Oplegnathidae.GIGASCIENCE,8(3),8. |
| MLA | Xiao, Yongshuang,et al."Genome sequence of the barred knifejaw Oplegnathus fasciatus (Temminck & Schlegel, 1844): the first chromosome-level draft genome in the family Oplegnathidae".GIGASCIENCE 8.3(2019):8. |
入库方式： OAI收割
来源：海洋研究所
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