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Journal of Virology, March 2004, p. 2405-2413, Vol. 78, No. 5
0022-538X/04/$08.00+0 DOI: 10.1128/JVI.78.5.2405-2413.2004
Copyright © 2004, American Society for Microbiology. All Rights Reserved.
The DNA-A Component of a Plant Geminivirus (Indian Mung Bean Yellow Mosaic Virus) Replicates in Budding Yeast Cells
Vineetha Raghavan, Punjab S. Malik, Nirupam Roy Choudhury, and Sunil K. Mukherjee*
Plant Molecular Biology, International Center for Genetic Engineering and Biotechnology, Aruna Asaf Ali Marg, New Delhi 110067, India
Received 13 August 2003/
Accepted 14 November 2003
Understanding the biochemistry of DNA replication of the plant DNA viruses is important for the development of antiviral strategies. Since DNA replication is little studied in plants, a genetically tractable, easily culturable, eukaryotic model system is required to pursue such studies in a facile manner. Here we report the development of a yeast model system that supports DNA replication of a chosen geminivirus strain, Indian mung bean yellow mosaic virus. The replication of plasmid DNA in the model system relies specifically on the virus-derived elements and factors. Usage of this model system revealed the role of at least one hitherto unknown viral factor for viral DNA replication. The episomal characteristic of single-strandedness of replicated plasmid DNA was shown, and the expression of viral genes was also confirmed. This model system is expected to shed light on the machinery and mechanism involved in geminiviral DNA replication in plants.
* Corresponding author. Mailing address: Plant Molecular Biology, International Center for Genetic Engineering and Biotechnology, Aruna Asaf Ali Marg, New Delhi 110067, India. Phone: 91-11-26189358. Fax: 91-11-26162316. E-mail:
sunilm{at}icgeb.res.in.
Journal of Virology, March 2004, p. 2405-2413, Vol. 78, No. 5
0022-538X/04/$08.00+0 DOI: 10.1128/JVI.78.5.2405-2413.2004
Copyright © 2004, American Society for Microbiology. All Rights Reserved.
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