期刊
GIGASCIENCE
卷 9, 期 1, 页码 -出版社
OXFORD UNIV PRESS
DOI: 10.1093/gigascience/giz161
关键词
Portunus trituberculatus; genome assembly; crab; chromosome; evolution
资金
- National Natural Science Foundation of China [31672267, 31640074]
- Jiangsu Agriculture Science and Technology Innovation Fund [CX(18)3027, CX(18)2027]
- Natural Science Foundation of Jiangsu Province [BK20171276, BK20160444]
- China Postdoctoral Science Foundation [2018M642105]
- Qing Lan Project of Daizhen Zhang
Background: The swimming crab, Portunus trituberculatus, is an important commercial species in China and is widely distributed in the coastal waters of Asia-Pacific countries. Despite increasing interest in swimming crab research, a high-quality chromosome-level genome is still lacking. Findings: Here, we assembled the first chromosome-level reference genome of P. trituberculatus by combining the short reads, Nanopore long reads, and Hi-C data. The genome assembly size was 1.00 Gb with a contig N50 length of 4.12 Mb. In addition, BUSCO assessment indicated that 94.7% of core eukaryotic genes were present in the genome assembly. Approximately 54.52% of the genome was identified as repetitive sequences, with a total of 16,796 annotated protein-coding genes. In addition, we anchored contigs into chromosomes and identified 50 chromosomes with an N50 length of 21.80 Mb by Hi-C technology. Conclusions: We anticipate that this chromosome-level assembly of the P. trituberculatus genome will not only promote study of basic development and evolution but also provide important resources for swimming crab reproduction.
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