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Updated: May 5, 2026
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Vaccinia Virus Infection & Temporal Analysis of Virus Gene Expression: Part 1
Published on: April 8, 2009
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Gene Expression Patterns Following Aphid-Mediated Polerovirus Transmission Highlight Differences Between Vector-Host
Sudeep Pandey1, Michael Catto2, Phillip Roberts3
1Department of Entomology, University of Georgia, Griffin, GA 30223, U.S.A.
Phytopathology
|January 8, 2026
Summary
Aphid-transmitted poleroviruses like cotton leafroll dwarf virus (CLRDV) alter plant gene expression. This study reveals how CLRDV infection and aphid feeding impact gene regulation in cotton and related hosts.
Area of Science:
- Plant Pathology
- Molecular Biology
- Genomics
Background:
- Aphid-transmitted poleroviruses, such as cotton leafroll dwarf virus (CLRDV), are known to manipulate plant gene expression.
- Understanding these molecular interactions is crucial for managing viral diseases in crops.
Purpose of the Study:
- To analyze gene expression patterns in cotton and alternate hosts following CLRDV infection.
- To differentiate gene expression changes caused by CLRDV infection versus aphid feeding alone.
- To identify key genes and pathways involved in plant defense, development, and vector fitness.
Main Methods:
- Differential gene expression analysis was performed comparing CLRDV-infected plants to non-infested controls.
- Gene expression profiles were also compared between mock-inoculated and non-infested plants.
- Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analyses were utilized to interpret the functions of differentially expressed genes (DEGs).
Main Results:
- CLRDV infection induced thousands of DEGs in cotton, hibiscus, okra, and prickly sida.
- Aphid feeding alone resulted in fewer DEGs compared to CLRDV infection across most hosts.
- DEGs were associated with plant development, defense mechanisms (phytohormones, salicylic acid, jasmonic acid), and compounds influencing vector fitness.
Conclusions:
- Host susceptibility to CLRDV and its aphid vector influences plant defense and development.
- Gene expression responses to CLRDV infection and aphid feeding are host-specific.
- The study highlights complex interactions between virus, vector, and host plant at the molecular level.
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