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A Baculovirus-Expressed Dicistrovirus That Is Infectious to Aphids
Journal of Virology
  • Narinda Pal, Iowa State University
  • Sandhya Boyapalle, Iowa State University
  • Randy Beckett, Iowa State University
  • W. Allen Miller, Iowa State University
  • Bryony C. Bonning, Iowa State University
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Detailed investigation of virus replication is facilitated by the construction of a full-length infectious clone of the viral genome. To date, this has not been achieved for members of the family Dicistroviridae. Here we demonstrate the construction of a baculovirus that expresses a dicistrovirus that is infectious in its natural host. We inserted a full-length cDNA clone of the genomic RNA of the dicistrovirus Rhopalosiphum padi virus (RhPV) into a baculovirus expression vector. Virus particles containing RhPV RNA accumulated in the nuclei of baculovirus-infected Sf21 cells expressing the recombinant RhPV clone. These virus particles were infectious in R. padi, a ubiquitous aphid vector of major cereal viruses. The recombinant virus was transmitted efficiently between aphids, despite the presence of 119 and 210 vector-derived bases that were stably maintained at the 5′ and 3′ ends, respectively, of the RhPV genome. The maintenance of such a nonviral sequence was surprising considering that most RNA viruses tolerate few nonviral bases beyond their natural termini. The use of a baculovirus to express a small RNA virus opens avenues for investigating replication of dicistroviruses and may allow large-scale production of these viruses for use as biopesticides.


This article is from Journal of Virology 81, no. 17 (2007): 9339–9345, doi:10.1128/JVI.00417-07.

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American Society for Microbiology
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Narinda Pal, Sandhya Boyapalle, Randy Beckett, W. Allen Miller, et al.. "A Baculovirus-Expressed Dicistrovirus That Is Infectious to Aphids" Journal of Virology Vol. 81 Iss. 17 (2007) p. 9339 - 9345
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