相关实验视频

Updated: Jul 18, 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

从高通量测序数据组装的病毒基因组中检测单个核酸多态:测试序列分析策略的大规模性能测试

Johan Rollin¹, Rachelle Bester^2,3, Yves Brostaux⁴

¹Laboratory of Plant Pathology-TERRA-Gembloux Agro-Bio Tech, University of Liège, Gembloux, Belgium.

|August 21, 2023

概括

高通量测序 (HTS) 和生物信息学工具对于病毒发现至关重要. 这项研究揭示了使用HTS数据在植物病毒中准确检测单核酸多态 (SNP) 的关键参数.

科学领域:

病毒学病毒学
生物信息学是一种生物信息学.
基因组学就是基因组学.

背景情况:

高通量测序 (HTS) 已经彻底改变了病毒的发现和监测.
生物信息学管道对于重建病毒基因组和检测单核酸多态 (SNP) 是必不可少的.
使用HTS数据进行SNP检测的生物信息学分析中的潜在偏差需要进一步调查.

研究的目的:

评估不同生物信息管道对植物病毒SNP检测精度的影响.
从HTS数据中确定影响变量调用可靠性的关键参数.
为改善植物病毒研究中SNP预测提供建议.

主要方法:

一项涉及14个植物病毒学实验室的大规模性能测试 (PT) 研究.
利用了三组人工设计的数据集,其中包含已知花马赛克病毒 (PepMV) 变体.
在三个关键步骤中分析生物信息学管道:读取预处理,病毒隔离识别和变异调用.

主要成果:

在不同生物信息管道中观察到SNP检测准确度的显著变化.
选择最接近的参考基因组,映射参数和手动验证对SNP检测成功产生了重大影响.
性能测试确定了影响变异调用结果的特定生物信息步骤和参数.

结论:

生物信息学分析步骤,特别是参考选择和映射,对于精确检测植物病毒中的SNP至关重要.
生物信息学管道的标准化和验证是必要的,以最大限度地减少偏见并提高可靠性.
建议提议提高从植物病毒学中HTS数据中SNP的预测准确度.

关键词:

生物信息学是一种生物信息学.基因组的基因组学植物植物植物植物植物.变种变种变种变种病毒病毒病毒

更多相关视频

Validating Whole Genome Nanopore Sequencing, using Usutu Virus as an Example

Validating Whole Genome Nanopore Sequencing, using Usutu Virus as an Example

Published on: March 11, 2020

Isolation and Genome Analysis of Single Virions using 'Single Virus Genomics'

Isolation and Genome Analysis of Single Virions using 'Single Virus Genomics'

Published on: May 26, 2013

相关概念视频

Single Nucleotide Polymorphisms-SNPs

Single Nucleotide Polymorphisms-SNPs

A single nucleotide polymorphism or SNP is a single nucleotide variation at a specific genomic position in a large population. It is the most prevalent type of sequence variation found in the human genome. Point mutations that occur in more than 1% of the population qualify as SNPs. These are present once every 1000 nucleotides on an average in the human genome. Replacement of a purine with another purine (A/G) or a pyrimidine with another pyrimidine (C/T) is known as a transition. In contrast,...

Viral Mutations

Viral Mutations

A mutation is a change in the sequence of bases of DNA or RNA in a genome. Some mutations occur during replication of the genome due to errors made by the polymerase enzymes that replicate DNA or RNA. Unlike DNA polymerase, RNA polymerase is prone to errors because it is not capable of “proofreading” its work. Viruses with RNA-based genomes, like HIV, therefore accrue mutations faster than viruses with DNA-based genomes. Because mutation and recombination provide the raw material...

Sanger Sequencing

Sanger Sequencing

DNA sequencing is a fundamental technique that is routinely used in the biological sciences. This method can be applied to a range of questions at different scales - from the sequencing of a cloned DNA fragment or the study of a mutation in a gene up to whole-genome sequencing. However, despite the widespread use of sequencing today, it was not until 1977 that Fredrick Sanger and his collaborators developed the chain-termination method to decode DNA sequences. It relies on the separation of a...