相关实验视频

Updated: Jul 23, 2025

Isolation of Fidelity Variants of RNA Viruses and Characterization of Virus Mutation Frequency

Isolation of Fidelity Variants of RNA Viruses and Characterization of Virus Mutation Frequency

Published on: June 16, 2011

法西奥拉肝炎菌的遗传变异和种群结构:一个in silico分析

Mughees Aizaz Alvi^1,2, Adeel Khalid², Rana Muhammad Athar Ali²

¹State Key Laboratory for Animal Disease Control and Prevention, College of Veterinary Medicine, Lanzhou University, National Para-Reference Laboratory for Animal Echinococcosis, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, 730046, China.

Parasitology research

|July 17, 2023

概括

使用线粒体DNA (cox1和nad1基因) 对肝,Fasciola hepatica的全球遗传分析揭示了高多样性,并表明最近的人口扩张,影响牲畜健康和流行病学.

科学领域:

分子生物学分子生物学
寄生虫学的寄生虫学
人口遗传学人口遗传学

背景情况:

肝炎菌在畜牧业造成全球经济重大损失.
线粒体DNA分析对于评估遗传多样性和人口结构至关重要.
了解F. hepatica种群遗传学有助于流行病学控制策略.

研究的目的:

在全球范围内调查Fasciola hepatica的遗传变异和种群结构.
分析cox1和nad1线粒体基因,以深入了解F. hepatica的分子生态.
为未来对F. hepatica. 的流行病学研究提供基础.

主要方法:

从NCBI GenBank.获取了cox1 (n=247) 和nad1 (n=357) 序列,这些序列来自NCBI GenBank.
使用MEGA软件对齐序列,并使用PopArt构建中间连接网络.
使用DnaSp软件估计的多样性指数和中立性测试.

主要成果:

鉴定了46种不同的cox1和98种nad1类型,表明它们具有很高的遗传多样性.
观察到Tajima的D和Fu的Fs值为正值,这表明未来人口增长的可能性很低,但最近的扩张也是如此.
区域和东道主智能的分析揭示了偏离中立的偏差,表明人口扩张.

结论:

这项研究为F. hepatica使用cox1和nad1基因的遗传变异提供了第一个全球洞察力.
研究结果表明,存在着地理上不同的F. hepatica变种.
结果有助于了解F. hepatica的分子流行病学,并为控制策略提供信息.

关键词:

肝炎带 (Fasciola hepatica) 是一个肝炎带.遗传的变异性遗传的变异性这就是cox1x1的意思.在那个时候,nad1

更多相关视频

Heuristic Mining of Hierarchical Genotypes and Accessory Genome Loci in Bacterial Populations

Heuristic Mining of Hierarchical Genotypes and Accessory Genome Loci in Bacterial Populations

Published on: December 7, 2021

Identification of Functionally-Relevant Lentivirus Integration Sites in an Insertional Mutagenesis Cell Library

Identification of Functionally-Relevant Lentivirus Integration Sites in an Insertional Mutagenesis Cell Library

Published on: January 10, 2025

相关概念视频

Genetic Variation

Genetic Variation

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,...

Evolutionary Relationships through Genome Comparisons

Evolutionary Relationships through Genome Comparisons

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...

Gene Evolution - Fast or Slow?

Gene Evolution - Fast or Slow?

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...