全基因组关联和功能注释分析揭示了候选基因和与美国卡塔丁羊的各种母羊长寿指标相关的途径
Luis F B Pinto1,2, Ronald M Lewis3, Artur O Rocha2
1Department of Animal Science, Federal University of Bahia, Salvador, Brazil.
Frontiers in genetics
|July 18, 2025
概括
全基因组关联研究确定了与卡塔丁羊的母羊长寿相关的遗传标记. 这些发现揭示了对生殖健康和应激反应的复杂遗传影响,这对育种计划至关重要.
科学领域:
- 动物遗传学动物遗传学
- 生殖生物学 生殖生物学
- 量化遗传学 量化遗传学
背景情况:
- 羊的长寿是一个复杂的特征,其特点是遗传能力低,表达迟缓,性别限制,这对育种计划中的遗传改进构成了挑战.
- 全基因组关联研究 (GWASs) 提供了一种强大的方法来剖析复杂特征的遗传结构,例如寿命.
研究的目的:
- 在一个大型的卡塔丁羊群 (n=12,734) 中,对八种与长寿相关的特征进行关联分析.
- 确定单核酸多态 (SNP) 和候选基因,影响绵羊的寿命和相关特征.
主要方法:
- 在12734只卡塔赫丁羊群中利用全基因组关联研究 (GWAS).
- 分析了22个染色体和8个与长寿相关的特征之间的86个SNP之间的关联.
- 对涉及的基因进行了途径丰富分析.
主要成果:
- 确定了126个全染色体和3个全基因组显著的关联.
- 发现与多个特征相关的24个SNP,与与生殖能力,生殖激素,应激反应,生长和尸体特征相关的基因重叠.
- 丰富的途径包括催产素信号传递和与心脏相关的途径.
结论:
- 卡塔丁羊的Ewe长寿是一种高度多基因的特征,受影响的基因影响繁殖,健康和应激弹性.
- 确定了候选基因和通路,为基因组选择提供了有价值的目标,以提高绵羊育种计划中的功能寿命.
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