相关实验视频

Updated: Jul 7, 2025

Combining Analysis of DNA in a Crude Virion Extraction with the Analysis of RNA from Infected Leaves to Discover New Virus Genomes

Combining Analysis of DNA in a Crude Virion Extraction with the Analysis of RNA from Infected Leaves to Discover New Virus Genomes

Published on: July 27, 2018

遗传多样性,进化动力学,和正在进行的Pedilanthus叶子卷曲病毒的传播

Zafar Iqbal¹, Muhammad Shafiq², Muhammad Naeem Sattar¹

¹Central Laboratories, King Faisal University, Al-Ahsa P.O. Box 55110, Saudi Arabia.

|December 23, 2023

概括

佩迪兰修斯叶子卷曲病毒 (PeLCV) 显示出高度的遗传多样性和重组,表明其在巴基斯坦和印度的快速进化和扩张. 这种Begomovirus正在适应,其起源可追溯到1977年的巴基斯坦.

科学领域:

植物病毒学植物病毒学
分子进化是分子进化的过程.
生物信息学是一种生物信息学.

背景情况:

佩迪兰修斯叶子卷曲病毒 (PeLCV) 是一种单一的贝戈病毒,在巴基斯坦和印度迅速蔓延,影响了许多植物物种.
病毒进化以快速的突变率为特征,导致显著的遗传多样性,影响生态和进化行为.

研究的目的:

在PeLCV基因组内计算地绘制序列变异动态,遗传异质性,区域多样性,系系和重组事件.
了解PeLCV的进化轨迹和多样化模式.

主要方法:

对52个全长PeLCV基因组序列的家族遗传学分析.
网络分析以确定进化关系和分类.
重组事件和人口选择的推断.

主要成果:

遗传学和网络分析揭示了7个主要分类,具有区域性,但不是宿主特定的划分.
1977年,PeLCV的起源被追溯到巴基斯坦的穆尔坦,随后蔓延到印度和巴基斯坦的其他地区.
在整个基因组中检测到高水平的物种间和物种内部重组.
PeLCV群体表现出高遗传多样性 (π = 0.073%),高核酸替代率 (1.54 × 10−3) 和显著的重组.

结论:

PeLCV表现出快速扩散和高度的遗传多样性,使其与其他贝戈莫病毒区别开来.
诸如高重组率和人口选择等因素有助于PeLCV的分歧和潜在适应新宿主.
这项研究提供了关于PeLCV.V.的出现和进化动态的见解.

关键词:

贝戈莫病毒 (Begomovirus) 是一种病毒.遗传多样性遗传多样性突变是一种突变.佩迪兰图斯叶子卷曲病毒人类的基因组学.再组合的复合方式.

更多相关视频

Protocols for Investigating the Host-tissue Distribution, Transmission-mode, and Effect on the Host Fitness of a Densovirus in the Cotton Bollworm

Protocols for Investigating the Host-tissue Distribution, Transmission-mode, and Effect on the Host Fitness of a Densovirus in the Cotton Bollworm

Published on: April 12, 2017

Fluorescence in situ Hybridizations FISH for the Localization of Viruses and Endosymbiotic Bacteria in Plant and Insect Tissues

Fluorescence in situ Hybridizations FISH for the Localization of Viruses and Endosymbiotic Bacteria in Plant and Insect Tissues

Published on: February 24, 2014

相关概念视频

Gene Flow

Gene Flow

Gene flow is the transfer of genes among populations, resulting from either the dispersal of gametes or from the migration of individuals.

Mutation, Gene Flow, and Genetic Drift

Mutation, Gene Flow, and Genetic Drift

In a population that is not at Hardy-Weinberg equilibrium, the frequency of alleles changes over time. Therefore, any deviations from the five conditions of Hardy-Weinberg equilibrium can alter the genetic variation of a given population. Conditions that change the genetic variability of a population include mutations, natural selection, non-random mating, gene flow, and genetic drift (small population size).

Genetics of Speciation

Genetics of Speciation

Speciation is the evolutionary process resulting in the formation of new, distinct species—groups of reproductively isolated populations.

Asexual Reproduction

Asexual Reproduction

Asexual reproduction allows plants to reproduce without growing flowers, attracting pollinators, or dispersing seeds. Offspring are genetically identical to the parent and produced without the fusion of male and female gametes.

Genetic Drift

Genetic Drift

Natural selection—probably the most well-known evolutionary mechanism—increases the prevalence of traits that enhance survival and reproduction. However, evolution does not merely propagate favorable traits, nor does it always benefit populations.

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...