多工具复制号检测突出了来自不同地理区域的微型猪品种中常见的与体型相关的变异
Jan Berghöfer1,2,3, Nadia Khaveh1,3, Stefan Mundlos1,4,5
1Max Planck Institute for Molecular Genetics, Berlin, Germany.
BMC genomics
|March 23, 2025
概括
微型猪的副本数变异 (CNVs) 揭示了通过选择性育种塑造的品种特异性遗传特征. 这项研究确定了常见和独有的CNV,将它们与全球品种的生长,繁殖和新陈代谢联系起来.
科学领域:
- 基因组学就是基因组学.
- 动物遗传学动物遗传学
- 生物信息学是一种生物信息学.
背景情况:
- 副本数变异 (CNVs) 是影响哺乳动物特征的显著基因组变化.
- 虽然在生产猪中研究了CNV,但缺乏用于生物医学研究的微型猪的全面分析.
研究的目的:
- 为了描述不同小型猪品种的副本数变异景观.
- 研究选择性育种对结构变异和品种特异性表型的影响.
主要方法:
- 全球9个品种36只小型猪的全基因组测序.
- 使用多工具方法 (CNVpytor,Delly,GATK gCNV,Smoove) 进行准确的CNV识别.
- 进行了功能丰富分析和定量特征位置 (QTL) 映射.
主要成果:
- 在所有品种中确定了34个异构区域的同卵性CNV和386个共享拷贝数变异区域 (CNVR).
- 发现的品种专属CNVR:美国品种132个,亚洲/大洋洲品种47个,欧洲品种114个.
- 相关的常见CNVR与生长特征相关,独家CNVR与脂质代谢,生殖和心血管特征相关.
结论:
- 选择性育种对CNV产生重大影响,有助于微型猪的独特品种表型.
- 已识别的CNV景观为了解牲畜基因组中的人工选择提供了宝贵的资源.
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