A chromosome-level genome assembly of the oriental river prawn, Macrobrachium nipponense

文献类型: 外文期刊

第一作者: Jin, Shubo

作者: Jin, Shubo;Jiang, Sufei;Xiong, Yiwei;Zhang, Wenyi;Qiao, Hui;Gong, Yongsheng;Fu, Hongtuo;Bian, Chao;Gao, Zijian;Li, Ruihan;Huang, Yu;You, Xinxin;Shi, Qiong;Han, Kai;Shi, Chengcheng;Fan, Guangyi

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关键词: Macrobrachium nipponense; Chromosome-level genome; Evolutionary analysis; Genome duplication; Candidate sex-related genes

期刊名称:GIGASCIENCE ( 影响因子:5.993; 五年影响因子:7.715 )

ISSN: 2047-217X

年卷期: 2021 年 10 卷 1 期

页码:

收录情况: SCI

摘要: Background: The oriental river prawn, Macrobrachium nipponense, is an economically important shrimp in China. Male prawns have higher commercial value than females because the former grow faster and reach larger sizes. It is therefore important to reveal sex-differentiation and development mechanisms of the oriental river prawn to enable genetic improvement. Results: We sequenced 293.3 Gb of raw Illumina short reads and 405.7 Gb of Pacific Biosciences long reads. The final whole-genome assembly of the Oriental river prawn was similar to 4.5 Gb in size, with predictions of 44,086 protein-coding genes. A total of 49 chromosomes were determined, with an anchor ratio of 94.7% and a scaffold N50 of 86.8 Mb. A whole-genome duplication event was deduced to have happened 109.8 million years ago. By integration of genome and transcriptome data, 21 genes were predicted as sex-related candidate genes. Conclusion: The first high-quality chromosome-level genome assembly of the oriental river prawn was obtained. These genomic data, along with transcriptome sequences, are essential for understanding sex-differentiation and development mechanisms in the oriental river prawn, as well as providing genetic resources for in-depth studies on developmental and evolutionary biology in arthropods.

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