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Yongchao Niu^1,2, Xinhao Fan^1,2,3,4, Yalan Yang^1,2,4

¹Kunpeng Institute of Modern Agriculture at Foshan, Agricultural Genomics Institute, Chinese Academy of Agricultural Sciences, Foshan, China.

Communications biology

|June 18, 2024

概括

我们开发了一种新方法,使用长读序列和单个精子数据创建精确的染色体级分相基因组. 这种方法成功地绘制了精子运动特征,并改善了猪的Y染色体组装.

科学领域:

基因组学就是基因组学.
动物遗传学动物遗传学
生殖生物学生殖生物学

背景情况:

染色体级分相基因组对于理解遗传变异和遗传至关重要.
精确的基因组分相是具有挑战性的,特别是对于复杂的基因组.
单性子细胞测序为遗传研究提供了一个独特的资源.

研究的目的:

开发和验证一种用于染色体级分相基因组的新型单元型组装方法.
调查单个精子测序对遗传映射和特征关联的有用性.
改进Y染色体的组装,并探索其在生殖特征中的作用.

主要方法:

在一只雄性Landrace猪上使用PacBio HiFi和Hi-C测序.
利用单个精子测序对102个单独的精子细胞.
开发了一种将长时间读取数据和精子阶段标记物整合在一起的单 haplotype 组装方法.

主要成果:

与仅依赖HiFi读取的方法相比,实现了更高的分阶段精度.
构建了一个遗传地图,并将精子运动特征映射到1号染色体 (105.40-110.70 Mb).
使用Y染色体携带精子数据组装了26.16Mb的Y染色体序列.

结论:

提出了一种可靠的方法来组装染色体级分相基因组.
证明了精子种群在基础生物学和精子表型研究中的潜力.
强调了将长读和单精子测序集成为高级基因组研究的价值.

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Genome Annotation and Assembly

Genome Annotation and Assembly

The genome refers to all of the genetic material in an organism. It can range from a few million base pairs in microbial cells to several billion base pairs in many eukaryotic organisms. Genome assembly refers to the process of taking the DNA sequencing data and putting it all back together in a correct order to create a close representation of the original genome. This is followed by the identification of functional elements on the newly assembled genome, a process called genome annotation.