直接RNA测序揭示了Procambarus clarkii中的性别偏差的转录组和表转录组调节
Haijing Xu1, Guangtong Song2, Yichen Luo1
1Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources by the Ministry of Education, Shanghai Ocean University, Shanghai 201306, China.
Biology
|December 30, 2025
概括
直接RNA测序揭示了基因表达和RNA修饰的显著性别特异性差异. 这为性发育和潜在的水产养殖应用提供了关键的见解.
科学领域:
- * 甲动物生物学
- * 分子遗传学 分子遗传学
- * 水产养殖是水产养殖的一种.
背景情况:
- *红色沼泽 (Procambarus clarkii) 呈现两体性变异,雄性生长更快.
- * 甲类性别分化的分子机制尚未得到充分理解.
- * 了解这些机制可以帮助水产养殖,特别是单性繁殖.
研究的目的:
- * 为了研究P. clarkii. 性差异化的分子机制.
- *使用直接RNA测序 (DRS) 分析淋巴体转录组.
- * 为了确定基因表达,拼接和RNA修饰的性别特异性.
主要方法:
- * 基于牛津纳米孔的直接RNA测序 (DRS) 对雄性和雌性P. clarkii生殖腺.
- *新基因的鉴定和转录结构,替代拼接和RNA修饰的分析.
- *对候选基因表达的定量PCR (qPCR) 验证.
主要成果:
- * 确定了20001个以前没有注释的基因.
- *在转录结构,替代拼接和RNA修改方面发现了广泛的性别特异.
- * 卵巢转录显示了较短的多分子A尾巴和更多的替代拼接;男性生殖腺在3' UTR中增加了m6A和psU修饰.
- *确认了关键基因 (Dmrt7,FR,无果,IAGBP,RDH,Vtg) 的性别偏差表达.
结论:
- * 这项研究提供了P. clarkii性腺体的第一个全面的表谱图.
- * 转录后调节在类的性别决定中起着至关重要的作用.
- *研究结果为开发水产养殖中单性繁殖策略提供了宝贵的见解.
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