一个更新的猪哈普洛型参考小组 (PHARP 4.0) 包括13,298个哈普洛型.
Qingyu Wang1, Zhenyang Zhang1,2, Xiaowei Ye1
1Key Laboratory of nutrition and breeding for high-quality animal products, College of Animal Sciences, Zhejiang University, Hangzhou, Zhejiang, China.
Communications biology
|November 20, 2025
概括
新的猪哈普洛型参考小组 (PHARP) 4.0提高了用于猪遗传研究和养殖的基因型归算准确度. 这个庞大而多样化的小组以经济有效的方式增强了全基因组关联研究和基因组预测.
科学领域:
- 动物基因组学 动物基因组学
- 生物信息学是一种生物信息学.
- 量化遗传学 量化遗传学
背景情况:
- 高通量测序加速了基因研究,但WGS对于大型研究来说是昂贵的.
- 基因型归算为推断遗传变异提供了一个具有成本效益的替代方案.
- 现有的猪参考板在尺寸和多样性方面存在局限性.
研究的目的:
- 为了介绍更新的猪哈普洛型参考小组 (PHARP) 4.0,这是迄今为止最大和最多样化的猪参考小组.
- 与现有面板相比,评估PHARP 4.0的归算准确性.
- 优化归算管道并评估它们在全基因组关联研究 (GWAS) 中的实用性.
主要方法:
- 从 154 种猪种的 6449 个猪基因组组装了 PHARP 4.0 ,包含 5030 万个 SNP 和 580 万个 indels.
- 与使用低密度SNP数据的SWIM,AHC,AGIDB和PGRP面板对比PHARP 4.0的归算准确性.
- 优化了基于RNA-seq的归算管道,并评估了参考面板大小对罕见变异归算的影响.
主要成果:
- 在欧洲品种中,PHARP 4.0显示出优异的归算准确度 (CR > 0.99,R2 > 0.98),在中国的金华猪中,准确度提高 (CR = 0.936,R2 = 0.924).
- 优化的RNA-seq管道在欧洲品种中实现了高精度 (CR > 0.95,R2 > 0.90) 和在中国金华猪中 (CR = 0.93,R2 = 0.92).
- 增加了参考面板大小,改善了罕见变异归因;PHARP 4.0通过归因因果变异,促进了成功的GWAS.
结论:
- PHARP 4.0 是猪遗传研究的宝贵资源,提供了更高的归算准确性和多样性.
- 优化的归算方法,包括基于RNA-seq的方法,提高了猪基因组学的成本效益和准确性.
- PHARP 4.0支持大规模的遗传研究和育种计划,通过实现精确的基因型归因.
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