Related Experiment Videos
The genome sequence and evolution of baculoviruses
Elisabeth A Herniou1, Julie A Olszewski, Jennifer S Cory
1Department of Biological Sciences, Imperial College of Science, Technology and Medicine, London SW7 2AZ, United Kingdom. elisabeth.herniou@ic.ac.uk
Annual Review of Entomology
|November 5, 2002
Summary
Comparative genomic analysis of 13 baculoviruses identified 30 core genes and four major phylogenetic groups, including Granulovirus and nucleopolyhedroviruses. This study illuminates baculovirus evolution and genome plasticity.
Area of Science:
- Virology
- Genomics
- Evolutionary Biology
Background:
- Baculoviruses are double-stranded DNA viruses with significant impact on insect populations.
- Understanding baculovirus genome evolution is crucial for developing effective biocontrol agents.
Purpose of the Study:
- To perform a comparative genomic analysis of 13 baculovirus complete genome sequences.
- To elucidate the phylogenetic relationships and evolutionary patterns within the Baculoviridae family.
Main Methods:
- Comparative analysis of complete genome sequences.
- Phylogenetic analyses using core genes, gene content, and gene order.
- Gene content mapping to identify acquisitions and losses.
Main Results:
- Identified a core set of 30 genes common to the analyzed baculoviruses.
- Established four major phylogenetic groups: Granulovirus (GVs), Group I and II lepidopteran nucleopolyhedroviruses (NPVs), and CuniNPV.
- Revealed patterns of gene gain/loss, indicating fluid baculovirus genomes.
- Identified conserved gene clusters and potential viral DNA repair systems.
Conclusions:
- Baculovirus genomes are dynamic, with significant gene content and order evolution.
- Phylogenetic analyses support distinct evolutionary lineages within the Baculoviridae.
- The study provides insights into viral adaptation and host specificity.