线粒体基因组多态与猪背脂肪厚度的关联分析
Hao Liu1,2, Xing Zhang1,3,4, Yaning Hu1
1State Key Laboratory of Animal Biotech Breeding, China Agricultural University, Beijing, China.
Animal biotechnology
|November 15, 2023
概括
线粒体DNA (mtDNA) 的变异影响猪背脂肪厚度 (BFT). 特定的mtDNA多态和单元组与减少的BFT有关,这为养猪进步提供了潜力.
科学领域:
- 动物遗传学动物遗传学
- 分子生物学分子生物学
- 农业科学 农业科学
背景情况:
- 线粒体DNA (mtDNA) 的变异通过影响能量生产和新陈代谢,影响农场动物的经济特征.
- 脂肪沉积与线粒体功能密切相关,但mtDNA多态化对猪背脂肪厚度 (BFT) 的影响以前尚不清楚.
研究的目的:
- 调查线粒体DNA (mtDNA) 多态和猪背脂肪厚度 (BFT) 之间的关联.
- 为了确定特定的mtDNA变异和影响猪BFT的哈普洛组.
主要方法:
- 在243只猪中测序mtDNAD环区域,以确定多态位点.
- 关联分析以确定已识别的mtDNA变异与BFT测量之间的关系.
- 哈普洛型和哈普洛组分析,以评估组合mtDNA变异对BFT的影响.
主要成果:
- 在猪mtDNA D-loop中发现了48个多态位点和4个单元组中的22个单元型.
- 30种mtDNA变异与BFT显著相关 (P<0.05).
- 在m.794A>G多态度显示在BFT (∼2.5毫米,P<0.001) 的实质性差异. 哈普洛组HG1,特别是哈普洛型H4,与其他组相比,表现出明显较低的BFT值 (P < 0.01).
结论:
- 线粒体DNA (mtDNA) 多态性与猪背脂肪厚度 (BFT) 的变化有显著联系.
- 特定的mtDNA哈普洛组和多态性可以用作选择具有理想BFT特征的猪的标记.
- 这些发现表明mtDNA分析在猪分子育种策略中的潜在应用.
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