对Synodontis eupterus和Synodontis pollili的线粒体基因组进行比较和遗传学分析
Cheng-He Sun1, Chang-Hu Lu2, Zi-Jian Wang3
1The Co-Innovation Center for Sustainable Forestry in Southern China, College of Life Sciences, Nanjing Forestry University, Nanjing, 210037, China.
Scientific reports
|July 4, 2024
概括
这项研究对Synodontis eupterus和Synodontis polli的线粒体基因组进行了测序,揭示了它们的遗传差异. 遗传学分析澄清了莫科科科鱼类中的关系,有助于它们的分类.
科学领域:
- 鱼类学 鱼类学 鱼类学
- 基因组学就是基因组学.
- 生物信息学是一种生物信息学.
背景情况:
- 准确的鱼类分类对于理解生物多样性和进化关系至关重要.
- 区分像Synodontis eupterus和Synodontis polli这样的密切相关物种需要详细的遗传分析.
研究的目的:
- 使用线粒体基因组测序来区分Synodontis eupterus和Synodontis polli.
- 为摩科科科鱼构建一个家族遗传树,以完善它们的分类学分类.
主要方法:
- 线粒体基因组测序和对14种莫科科科动物的生物信息分析.
- 使用最大概率和基于蛋白质编码基因序列的贝叶斯方法构建家族遗传树.
主要成果:
- 鉴定了S. eupterus (16,579 bp) 和S. polli (16,544 bp) 的线粒体基因组,这两种基因组都显示出AT偏差的组成.
- 遗传学分析表明,S. eupterus与S. clarias相结合,而S. polli则与S. petricola相结合.
- 发现Mochokiella paynei与Synodontis属聚集在一起,这表明潜在的分类学修订.
结论:
- 这项研究为区分S. eupterus和S. polli.提供了一个强大的遗传框架.
- 这些发现支持重新评估目前的Mochokidae鱼类分类系统.
- 这项研究为更清晰地了解摩科idae 族谱和分类学奠定了基础.
相关概念视频
Evolutionary Relationships through Genome Comparisons
5.7K
Genome comparison is one of the excellent ways to interpret the evolutionary relationships between organisms. The basic principle of genome comparison is that if two species share a common feature, it is likely encoded by the DNA sequence conserved between both species. The advent of genome sequencing technologies in the late 20th century enabled scientists to understand the concept of conservation of domains between species and helped them to deduce evolutionary relationships across diverse...
5.7K
Gene Evolution - Fast or Slow?
7.1K
The genomes of eukaryotes are punctuated by long stretches of sequence which do not code for proteins or RNAs. Although some of these regions do contain crucial regulatory sequences, the vast majority of this DNA serves no known function. Typically, these regions of the genome are the ones in which the fastest change, in evolutionary terms, is observed, because there is typically little to no selection pressure acting on these regions to preserve their sequences.
In contrast, regions which code...
In contrast, regions which code...
7.1K
Synteny and Evolution
3.2K
John H. Renwick first coined the term “synteny” in 1971, which refers to the genes present on the same chromosomes, even if they are not genetically linked. The species with common ancestry tend to show conserved syntenic regions. Therefore, the concept of synteny is nowadays used to describe the evolutionary relationship between species.
Around 80 million years ago, the human and mice lineages diverged from the common ancestor. During the course of evolution, the ancestral...
Around 80 million years ago, the human and mice lineages diverged from the common ancestor. During the course of evolution, the ancestral...
3.2K
Comparing Mitochondrial, Chloroplast, and Prokaryotic Genomes
12.2K
The present-day mitochondrial and chloroplast genomes have retained some of the characteristics of their ancestral prokaryotes and also have acquired new attributes during their evolution within eukaryotic cells. Like prokaryotic genomes, mitochondrial and chloroplast genomes neither bind with histone-like proteins nor show complex packaging into chromosome-like structures, as observed in eukaryotes. Unlike mitotic cell divisions observed in eukaryotic cells, mitochondria and chloroplasts...
12.2K
Phylogenetic Trees
45.3K
Phylogenetic trees come in many forms. It matters in which sequence the organisms are arranged from the bottom to the top of the tree, but the branches can rotate at their nodes without altering the information. The lines connecting individual nodes can be straight, angled, or even curved.
45.3K
Convergent Evolution
27.7K
Evolution shapes the features of organisms over time, ensuring that they are suited for the environments in which they live. Sometimes, selection pressure leads to the rise of similar but unrelated adaptations in organisms with no recent common ancestors, a process known as convergent evolution.
27.7K


