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Discovery and identification of candidate sex-related genes based on transcriptome sequencing of Russian sturgeon (Acipenser gueldenstaedtii) gonads

文献类型： 外文期刊

作者： Chen, Yadong 1 ; Xia, Yongtao 3 ; Shao, Changwei 1 ; Han, Lei 3 ; Chen, Xuejie 1 ; Yu, Mengjun 1 ; Sha, Zhenxia 1 ;

作者机构： 1.Chinese Acad Fishery Sci, Yellow Sea Fisheries Res Inst, Minist Agr, Key Lab Sustainable Dev Marine Fisheries, Qingdao, Peoples R China

2.Funct Lab Marine Fisheries Sci & Food Prod Proc, Qingdao, Peoples R China

3.Hangzhou Qiandaohu Xunlong Sci Tech Dev Co Ltd, Quzhou, Peoples R China

关键词： Russian sturgeon; transcriptome; gonad; sex-related genes

期刊名称：PHYSIOLOGICAL GENOMICS （ 影响因子：3.107； 五年影响因子：3.446 ）

ISSN： 1094-8341

年卷期： 2016 年 48 卷 7 期

页码：

收录情况： SCI

摘要： As the Russian sturgeon (Acipenser gueldenstaedtii) is an important food and is the main source of caviar, it is necessary to discover the genes associated with its sex differentiation. However, the complicated life and maturity cycles of the Russian sturgeon restrict the accurate identification of sex in early development. To generate a first look at specific sex-related genes, we sequenced the transcriptome of gonads in different development stages (1, 2, and 5 yr old stages) with next-generation RNA sequencing. We generated >60 million raw reads, and the filtered reads were assembled into 263,341 contigs, which produced 38,505 unigenes. Genes involved in signal transduction mechanisms were the most abundant, suggesting that development of sturgeon gonads is under control of signal transduction mechanisms. Differentially expressed gene analysis suggests that more genes for protein synthesis, cytochrome c oxidase subunits, and ribosomal proteins were expressed in female gonads than in male. Meanwhile, male gonads expressed more transposable element transposase, reverse transcriptase, and transposase-related genes than female. In total, 342, 782, and 7,845 genes were detected in intersex, male, and female transcriptomes, respectively. The female gonad expressed more genes than the male gonad, and more genes were involved in female gonadal development. Genes (sox9, foxl2) are differentially expressed in different sexes and may be important sex-related genes in Russian sturgeon. Sox9 genes are responsible for the development of male gonads and foxl2 for female gonads.

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