在贾吉子中开发和应用cGPS 20K液相SNP微阵列
Tieshan Xu1, Zixin Xu2, Dingping Bai3
1Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences, Hainan, Haikou 571100, PR China.
Poultry science
|December 27, 2024
概括
我们开发了一种新的20K微阵列,用于贾吉的基因定型,从而实现高效的分子繁殖. 该工具确定了与羽毛颜色相关的遗传标记,包括候选基因EDNRB2和VAMP7.7.
科学领域:
- 动物遗传学动物遗传学
- 基因组学就是基因组学.
- 分子育种是一种分子育种.
背景情况:
- 贾吉是一种有价值的家禽品种,需要高效的分子育种工具.
- 现有的基因型定型方法可能缺乏大规模应用所需的效率和准确性.
研究的目的:
- 构建一个具有成本效益,高效率和准确的基因型工具,用于贾吉子的分子育种.
- 为了确定与贾吉的羽毛颜色相关的遗传位置和候选基因.
主要方法:
- 使用再测序数据构建20K液相微阵列 (cGPS).
- 对236只贾吉子进行基因定型,用于种群结构分析和全基因组关联研究 (GWAS).
- 开发KASP标记器,用于确定SNP位置.
主要成果:
- 在生产测试中,cGPS微阵列表现出了卓越的性能.
- 人口结构分析揭示了四个亚种群.
- GWAS在14号染色体上发现了38个显著的SNP位点,这意味着EDNRB2和VAMP7是羽毛颜色的候选基因.
- 在EDNRB2上游的突变与无色表型有关,KASP标记物显示出强烈的基因型-表型相关性.
结论:
- 这种独立设计的微阵列适用于大规模的贾吉子基因定型.
- 这种工具为未来对贾吉子突变位置和功能基因的查提供了基础.
- 已识别的遗传标记和候选基因为该品种推进了分子育种策略.
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