在Sitka松树中进行高密度遗传链接映射,促进了针叶树中基因组资源的整合
Hayley Tumas1, Joana J Ilska2, Sebastien Gérardi3,4
1Department of Biology, University of Oxford, Oxford OX1 3RB, UK.
G3 (Bethesda, Md.)
|February 17, 2024
概括
研究人员使用21570个单核酸多态 (SNP) 标记物开发了Sitka杉的高密度链接地图. 这种资源有助于Sitka杉基因组组合和遗传资源管理.
科学领域:
- 基因组学就是基因组学.
- 林业 林业 林业 林业 林业
- 植物科学 植物科学
背景情况:
- 大型针叶树的基因组需要密集的链接地图来进行组装和基因组分析.
- 大多数针叶树物种缺乏广泛的基因型化资源,阻碍了地图开发.
研究的目的:
- 开发一个高密度的链接地图Sitka杉 (Picea sitchensis).
- 为Sitka杉基因组组装和遗传管理提供基因组资源.
主要方法:
- 一个单步映射方法结合了RAD-seq和基因型阵列SNP数据.
- 利用了来自2个全兄弟姐妹家庭的528个人.
- 开发了一个链接地图,其中包含21570个单核酸多态 (SNP) 标记.
主要成果:
- 构建了一个含有12个链接组的和地图,总长度为2,142 cM.
- 对5414个独特的基因编码序列的定位揭示了Pinaceae中的高合成和基因顺序保护.
- 通过使用27,052个标记,开发了P. sitchensis和Picea glauca的综合地图.
结论:
- 开发的链接地图和SNP目录为树基因组组装提供了新的视角.
- 这些资源支持以标记器为辅助的基因资源的可持续管理,在Sitka杉和相关物种.
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