在杂交的提拉皮亚中,格林的非添加物和异位基因特异性表达
Huan Zhong1, Bingxin Ren1, Chenyi Lou1
1State Key Laboratory of Developmental Biology of Freshwater Fish, College of Life Sciences, Hunan Normal University, Changsha, China.
Frontiers in endocrinology
|December 28, 2023
概括
杂交鱼表现出非添加性 ghrelin 基因表达,主要是在胃中. 这种表达受到母性基因的影响,并受到cis-trans效应的调节,为水产养殖中的混合活力提供了洞察力.
科学领域:
- 水产养殖是水产养殖的一种方式.
- 遗传学 遗传学 是一个
- 基因表达 基因表达
背景情况:
- 在水产养殖中,物种间杂交的目的是通过异构来增强生长和食欲等特征.
- 混合尼罗河鱼 (Oreochromis niloticus ♀ × Oreochromis aureus ♂) 显示出优异的生长和食欲,但潜在的遗传机制尚不清楚.
- 在这种混合体中,研究了调节鱼类生长和食欲的关键基因格林.
研究的目的:
- 为了研究杂交鱼的 ghrelin 基因的表达特征.
- 了解 ghrelin 表达的调节,包括等位基特异性表达 (ASE) 和 cis 和 trans 效应的影响.
- 为了阐明混合鱼增强特征的遗传基础.
主要方法:
- 格林表达的组织分布分析.
- 在 ghrelin 基因中识别单核酸多态 (SNP) 位点.
- 在禁食条件下测试等位基特异性表达 (ASE) 的热测序.
- 对 ghrelin 表达的 cis 和 trans 影响的评估.
主要成果:
- 格林的表达主要在胃中发现,与蓝色鱼 (非添加模式) 相比,杂交和尼罗河鱼的水平更高.
- 在杂交动物中观察到较高的母性基转录比例.
- 禁食显著增加了整体格林激素的表达,但母亲的等位基因比率保持稳定.
- 补偿 cis 和 trans 效应被确定为混合体中 ghrelin 表达的调解者.
结论:
- 格林在混合鱼中表现出非添加性表达,由亚基因组相互作用调节.
- 这些发现为基因表达特征和基因机制的新见解提供了新见解,这些特征和基因机制是鱼类杂交中的异种化背后的原因.
- 了解杂交动物的 ghrelin 调节可以为改善水产养殖特征的选择性育种策略提供信息.
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