Gonadal transcriptome analysis reveals MAG participates in ovarian suppression of intersex red claw crayfish (Cherax quadricarinatus)

文献类型： 外文期刊

第一作者： Chen, Honglin

作者： Chen, Honglin;Ouyang, Miaofeng;Zhou, Huan;Liu, Fangfang;Cai, Huiyi;Lou, Bao;Ouyang, Miaofeng;Zhou, Huan

作者机构：

关键词： Intersex; Ovotestis; Ovarian suppression; IAG hormone; MAG

期刊名称：BMC GENOMICS （ 影响因子：3.7； 五年影响因子：4.2 ）

ISSN： 1471-2164

年卷期： 2025 年 26 卷 1 期

页码：

收录情况： SCI

摘要： BackgroundThe red claw crayfish (Cherax quadricarinatus) is a commercially and ecologically significant species that displays a unique intersex model with an ovotestis gonad and was identified to have functional testes and a vestigial ovary, which was inhibited by insulin-like androgenic gland hormone (IAG), but the underlying molecular mechanisms are still unclear.ResultsIn this study, the structure and transcriptomic profiles of ovotestis and female and male gonad was analysis and compared, 406 differentially expressed genes were identified, among which membrane-anchored AG-specific factor (MAG) exhibited significantly greater expression in ovotestis gonads than in male or female gonads. The localization of MAG in type I or II cells of androgenic gland revealed its potential function of IAG hormone synthesis. Furthermore, the analyses of gene regulation relationship revealed that IAG positively regulates MAG expression, while MAG negatively regulates vitellogenin gene (VTG) expression.ConclusionsOur research suggesting MAG participates in the IAG regulated ovarian suppression in the intersex red claw crayfish, which provides important information on the regulatory mechanism of the ovarian dysplasia in the ovotestis of intersex red claw crayfish. These results will enhance the knowledge of IAG-related pathways in the female reproductive axis, as well as the mechanisms of sexual differentiation in crustaceans.

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