Multi-omics study of sex in greater amberjack (Seriola dumerili): Identifying related genes, analyzing sex-biased expression, and developing sex-specific markers

IF 2.2 2区生物学 Q4 BIOCHEMISTRY & MOLECULAR BIOLOGY Comparative Biochemistry and Physiology D-Genomics & Proteomics Pub Date : 2024-11-23 DOI:10.1016/j.cbd.2024.101364

Duo Li , Leilei Zeng , Weiwei Zhang , Qinghua Wang , Jinhui Wu , Chunhua Zhu , Zining Meng

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Abstract

The greater amberjack (Seriola dumerili) is a valuable marine fish with significant breeding potential, but does not exhibit clear sexual dimorphism in morphology. Sex research and the development of sex identification technology are important for breeding purposes. Through genome-wide association analysis (GWAS), we identified one significant sex-related SNP and 18 candidate sex-related SNPs, then obtained one significant sex-related gene (hsd17β1) and 20 candidate sex-related genes (hmbox1, ahcyl1, pdzd2, etc.). Key sex-biased genes (sox2, dmrt2, hsd17β3, rnf145, foxo3, etc.) were identified in mature gonads by transcriptome analysis. These genes are important in greater amberjack sex determination and gonad development. In addition, we developed classical PCR and kompetitive allele-specific PCR (KASP) primers to identify the sex of greater amberjack, with an accuracy of 94.87 % and 100 %, respectively. The sex-specific markers can effectively determine the gender of greater amberjack and evaluate the sex ratio and reproductive potential of the breeding population.

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大琥珀鱼（Seriola dumerili）性别的多组学研究：识别相关基因、分析性别表达并开发性别特异性标记物

大琥珀鱼（Seriola dumerili）是一种珍贵的海洋鱼类，具有巨大的繁殖潜力，但在形态上并不表现出明显的性二型。性别研究和性别鉴定技术的开发对育种非常重要。通过全基因组关联分析（GWAS），我们发现了 1 个显著的性别相关 SNP 和 18 个候选性别相关 SNP，进而获得了 1 个显著的性别相关基因（hsd17β1）和 20 个候选性别相关基因（hmbox1、ahcyl1、pdzd2 等）。通过转录组分析，发现了成熟性腺中的关键性偏基因（sox2、dmrt2、hsd17β3、rnf145、foxo3等）。这些基因在大琥珀鱼性别决定和性腺发育过程中非常重要。此外，我们还开发了经典PCR和竞争性等位基因特异性PCR（KASP）引物来鉴定大琥珀鱼的性别，准确率分别为94.87%和100%。性别特异性标记能有效确定大琥珀鱼的性别，评估繁殖种群的性别比例和繁殖潜力。

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来源期刊

Comparative Biochemistry and Physiology D-Genomics & Proteomics 生物-生化与分子生物学

CiteScore

5.10

自引率

3.30%

发文量

审稿时长

33 days

期刊介绍： Comparative Biochemistry & Physiology (CBP) publishes papers in comparative, environmental and evolutionary physiology. Part D: Genomics and Proteomics (CBPD), focuses on “omics” approaches to physiology, including comparative and functional genomics, metagenomics, transcriptomics, proteomics, metabolomics, and lipidomics. Most studies employ “omics” and/or system biology to test specific hypotheses about molecular and biochemical mechanisms underlying physiological responses to the environment. We encourage papers that address fundamental questions in comparative physiology and biochemistry rather than studies with a focus that is purely technical, methodological or descriptive in nature.