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Generation and Assembly of Virus-Specific Nucleocapsids of the Respiratory Syncytial Virus
Published on: July 27, 2021
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Population structure and evolution of Rhinoviruses.
Vaishali P Waman1, Pandurang S Kolekar1, Mohan M Kale2
1Bioinformatics Centre, University of Pune, Pune, India.
Plos One
|March 4, 2014
Summary
Rhinoviruses, common causes of respiratory infections, comprise seven distinct genetic subpopulations. Genetic recombination and positive selection drive diversification, particularly in Rhinovirus A and C species.
Area of Science:
- Virology
- Population Genetics
- Evolutionary Biology
Background:
- Rhinoviruses are the most frequent cause of human upper respiratory tract infections.
- These viruses, belonging to the Picornaviridae family, are classified into three species: Rhinovirus A, B, and C, known for their antigenic diversity.
- Genetic recombination is a key factor in the diversification of Rhinovirus species, though their population structure remains largely unstudied.
Purpose of the Study:
- To investigate the population structure and genetic diversity of Rhinoviruses.
- To identify the evolutionary forces, including mutation, recombination, and selection pressure, shaping Rhinovirus populations.
- To provide a foundation for developing new vaccines and antiviral drugs against Rhinoviruses.
Main Methods:
- Analysis of complete Rhinovirus genome sequences.
- Application of a model-based population genetics approach.
- Examination of phylogenetic tree topologies for recombinant strains.
Main Results:
- Identification of seven genetically distinct Rhinovirus subpopulations.
- Rhinovirus A and C populations are divided into four and two subpopulations, respectively; Rhinovirus B populations are genetically homogeneous.
- Intra-species recombination is prevalent in Rhinovirus A and C; episodic positive selection is significant in structural and non-structural proteins, driving new lineage emergence in Rhinovirus A.
Conclusions:
- The Rhinovirus population consists of seven distinct lineages, shaped by recombination and selection.
- Intra-species recombination and episodic positive selection contribute significantly to the diversification of Rhinovirus A.
- Intra- and inter-species recombination drive diversity in Rhinovirus C, with population structure insights aiding vaccine and drug design.
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