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A simple method for cloning the complete begomovirus genome using the bacteriophage phi29 DNA polymerase
Alice K Inoue-Nagata1, Leonardo C Albuquerque, Wesley B Rocha
1Embrapa Hortaliças, Virology, Km. 9, BR060, C. Postal 218, 70359-970 Brasília, DF, Brazil. alicenag@cnph.embrapa.br
Journal of Virological Methods
|January 24, 2004
Summary
Bacteriophage phiDNA polymerase amplifies circular DNA using rolling circle amplification. This method efficiently amplifies and clones begomovirus genomes from infected plant tissue for sequencing and genetic studies.
Area of Science:
- Molecular Biology
- Virology
- Plant Pathology
Background:
- Begomoviruses are circular DNA viruses that cause significant crop diseases.
- Efficient amplification and cloning of viral genomes are crucial for studying their biology and developing control strategies.
Purpose of the Study:
- To apply bacteriophage phiDNA polymerase's rolling circle amplification (RCA) for amplifying and cloning begomovirus genomes.
- To streamline the process of obtaining complete viral genomes for downstream applications like sequencing.
Main Methods:
- Utilized the TempliPhi commercial kit, based on phiDNA polymerase RCA, to amplify total DNA from infected plant tissue.
- Cloned the amplified circular DNA genome after digestion with a single-cutting restriction endonuclease.
Main Results:
- Successfully amplified the complete circular DNA genome of a begomovirus using RCA.
- Demonstrated that the amplified DNA is suitable for direct sequencing.
- Achieved simplified cloning steps and increased cloning efficiency of the viral genome.
Conclusions:
- PhiDNA polymerase-mediated RCA is an effective method for amplifying and cloning circular plant DNA virus genomes.
- The described approach simplifies molecular cloning workflows for begomoviruses.
- This technique facilitates genetic analysis and research on plant-infecting viruses.