Gonadal transcriptome sequencing reveals sexual dimorphism in expression profiling of sex-related genes in Asian arowana (Scleropages formosus)
文献类型： 外文期刊
作者： Zhao, Chenxi 1 ; Bian, Chao 2 ; Mu, Xidong 4 ; Zhang, Xinhui 1 ; Shi, Qiong 1 ;
作者机构： 1.Univ Chinese Acad Sci, Coll Life Sci, Beijing, Peoples R China
2.BGI Marine, BGI Acad Marine Sci, Shenzhen Key Lab Marine Genom, Guangdong Prov Key Lab Mol Breeding Marine Econ An, Shenzhen, Peoples R China
3.Shenzhen Univ, Coll Life Sci & Oceanograph, Lab Aquat Genom, Shenzhen, Peoples R China
4.Chinese Acad Fishery Sci, Minist Agr & Rural Affairs, Pearl River Fisheries Res Inst,Guangdong Modern Re, Key Lab Prevent & Control Aquat Invas Alien Specie, Guangzhou, Peoples R China
关键词： Asia arowana; gonad transcriptome; sex-biased; foxl2; dmrt gene family
期刊名称：FRONTIERS IN GENETICS （ 影响因子：3.7； 五年影响因子：4.3 ）
ISSN：
年卷期： 2024 年 15 卷
页码：
收录情况： SCI
摘要： Asia arowana (Scleropages formosus) is an ornamental fish with high economic value, while its sex determination mechanism is still poorly understood. By far, no morphological evidence or molecular marker has been developed for effective distinguishment of genders, which poses a critical challenge to our captive breeding efforts. In this study, we sequenced gonadal transcriptomes of adult Asian arowanas and revealed differential expression profiling of sex-related genes. Based on the comparative transcriptomics analysis of testes (n = 3) and ovaries (n = 3), we identified a total of 8,872 differentially expressed genes (DEGs) and 18,490 differentially expressed transposable elements (TEs) between male and female individuals. Interestingly, the expression of TEs usually has been more significantly testis-biased than related coding genes. As expected, several genes related to females (such as foxl2 and cyp19a1a) are significantly transcribed in the ovary, and some genes related to male gonad development (such as dmrt1, gsdf and amh) are highly expressed in the testis. This sexual dimorphism is valuable for ascertaining the differential expression patterns of sex-related genes and enriching the genetic resources of this economically important species. These valuable genetic materials thereby provide instructive references for gender identification and one-to-one breeding practices so as to expand fish numbers for a rapid elevation of economic value.
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