本土和国际牛之间的基因组比较揭示了参与环境适应的结构变异
Maria Giuseppina Strillacci1, Francesca Bernini2, Mario Vevey3
1Department of Veterinary Medicine and Animal Sciences, Università degli Studi di Milano, Lodi, 26900, Italy. maria.strillacci@unimi.it.
Scientific reports
|July 1, 2025
概括
复制数变异 (CNVs) 揭示了原生阿尔卑斯山牛品种和霍尔斯坦牛之间的遗传差异. 这些结构性基因组变异突显了品种适应不同农业环境的特点,从山区牧场到密集型系统.
科学领域:
- 基因组学就是基因组学.
- 动物遗传学动物遗传学
- 进化生物学 进化生物学
背景情况:
- 副本数变异 (CNV) 对遗传多样性和适应性至关重要.
- 像奥斯塔 (ARP,ABC,ACH) 和奥罗巴 (ORO) 这样的本土牛品种适应了自然的阿尔卑斯山环境,与人工系统中的专业霍尔斯坦 (HOL) 品种不同.
研究的目的:
- 用CNV来描述阿奥斯塔和奥罗帕的牛品种.
- 探索结构性基因组变异性与适应自然 (山区) 与人工 (密集) 农业系统之间的联系.
主要方法:
- 使用GeneSeek基因组分析器牛100K数据对5610个个体的160,798个CNV进行分析.
- 主要成分分析 (PCA) 的CNV地区 (CNVRs) 集群品种.
- VST分析以确定候选基因.
主要成果:
- PCA揭示了奥斯塔品种的明显集群,奥罗部分与他们组合在一起,霍尔斯坦形成了一个单独的集群.
- 在≥2%的样本中确定了526个CNVR,与生产,功能特征和健康有关.
- 确定了适应性,繁殖性和代谢效率的候选基因;与肌肉生长/耐力 (奥斯塔) 和牛奶生产/料效率 (霍尔斯坦) 相关的特定CNV.
结论:
- CNVs作为标记在牛品种的适应性选择.
- 不同的CNV模式反映了适应不同农业环境和生产系统的情况.
- 特定的基因变异突出了与特定品种特征和环境压力相关的权衡和能力.
相关概念视频
Genetic Variation
397
Genetic variation is the diversity in DNA sequences found among individuals of the same species. This diversity is crucial for a species' survival because it helps organisms adapt to environmental changes. Genetic variation begins with fertilization, where an egg and sperm cell merge. Each of these cells carries 23 chromosomes, up to 46 in the fertilized egg. Chromosomes are long DNA strands that contain genes, the basic units of heredity.
Genes exist in different versions called alleles,...
Genes exist in different versions called alleles,...
397
Genome Size and the Evolution of New Genes
8.4K
While every living organism has a genome of some kind (be it RNA, or DNA), there is considerable variation in the sizes of these blueprints. One major factor that impacts genome size is whether the organism is prokaryotic or eukaryotic. In prokaryotes, the genome contains little to no non-coding sequence, such that genes are tightly clustered in groups or operons sequentially along the chromosome. Conversely, the genes in eukaryotes are punctuated by long stretches of non-coding sequence.
8.4K
Genetics of Speciation
19.6K
Speciation is the evolutionary process resulting in the formation of new, distinct species—groups of reproductively isolated populations.
19.6K
Gene Flow
35.6K
Gene flow is the transfer of genes among populations, resulting from either the dispersal of gametes or from the migration of individuals.
35.6K
Multi-species Conserved Sequences
4.3K
Next-generation sequencing technologies have created large genomic databases of a variety of animals and plants. Ever since the human genome project was completed, scientists studied the genome of primates, mammals, and other phylogenetically distant living beings. Such large-scale studies have provided new insights into the evolutionary relationship between organisms.
Although the genome of each species varies greatly from each other, a few sequences are highly conserved. Such conserved...
Although the genome of each species varies greatly from each other, a few sequences are highly conserved. Such conserved...
4.3K
Types of Genetic Transfer Between Organisms
5.5K
5.5K


