GTF2A1基因的多态性与绵羊的子大小有关
Linxiu Yue1, Wenjie Li1, Yejun Pan1
1College of Animal Science and Technology, Northwest A&F University, Shaanxi Key Laboratory of Molecular Biology for Agriculture, Yangling, Shaanxi, 712100, PR China.
Theriogenology
|July 2, 2023
概括
一般转录因子IIA亚单元1 (GTF2A1) 基因中的遗传变异与澳大利亚白羊的子大小有关. 这些发现支持使用GTF2A1标记物来改善绵羊繁殖.
科学领域:
- 动物遗传学动物遗传学
- 生殖生物学 生殖生物学
- 分子生物学分子生物学
背景情况:
- 一般转录因子IIA亚单元1 (GTF2A1) 基因在真核细胞的转录激活中起着至关重要的作用.
- 之前的研究表明,GTF2A1与绵羊的羔羊特征之间存在联系.
- 了解影响子大小的遗传因素对于绵羊生产至关重要.
研究的目的:
- 调查GTF2A1基因的插入/删除 (indel) 变异与澳大利亚白羊的子大小之间的关联.
- 为了识别特定的GTF2A1多态,可以用于标记器辅助选择 (MAS) 在绵羊繁殖计划.
主要方法:
- 在550只澳大利亚白羊中分析了GTF2A1基因中的9个indel变异 (L1-L9).
- 在四个位置 (L1,L2,L3,L8) 检测到多态,计算多态信息含量 (PIC) 值.
- 进行了统计分析,以确定基因型与幼大小之间的关系.
主要成果:
- 在GTF2A1位点L1,L2和L3之间发现了显著的关联,以及第一个平价 litter 尺寸.
- L8位点多态性与第二平价 litter 尺寸有显著的相关性.
- 在L1,L2和L3位点的特定基因型在第一个平价中显示出更高的 litter 尺寸,而L8则影响了第二个平价.
结论:
- 在澳大利亚白羊中证实了GTF2A1基因内的多态性.
- 特定的GTF2A1基因型与不同平价的子大小有关.
- 这些发现为标记器辅助的选择提供了潜力,以提高绵羊 litter 尺寸并加速分子繁殖.
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