Journal
JOURNAL OF VIROLOGY
Volume 77, Issue 5, Pages 2972-2980Publisher
AMER SOC MICROBIOLOGY
DOI: 10.1128/JVI.77.5.2972-2980.2003
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Geminiviruses package single-stranded circular DNA and replicate via double-stranded DNA intermediates. During the past decade, increasing evidence has led to the general acceptance that their replication follows a rolling-circle replication mechanism like bacteriophages with single-stranded DNA. In a recent study, we showed that this is also true for Abutilon mosaic geminivirus (AbMV), but that this particular virus may also use a recombination-dependent replication (RDR) route in analogy to T4 phages. Because AbMV is a special case, since it has been propagated on ornamental plants for more than a hundred years, it was interesting to determine whether RDR is common among other geminiviruses. We analyzed geminiviruses from different genera and geographic origins by using BND cellulose chromatography in combination with an improved high resolution two-dimensional gel electrophoresis, and we conclude that multitasking in replication is widespread, at least for African cassava mosaic, Beet curly top, Tomato golden mosaic, and Tomato yellow leaf curl virus.
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