alexa Deep sequencing of recombinant virus populations in transgenic and nontransgenic plants infected with Cucumber mosaic virus.


Medical Safety & Global Health

Author(s): Morroni M, Jacquemond M, Tepfer M, Morroni M, Jacquemond M, Tepfer M

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Abstract Recombination is a major source of virus variability, and the question of whether novel recombinant viruses would emerge in transgenic plants expressing viral sequences has been a biosafety issue. We describe the results of pyrosequencing the recombinant viral RNAs appearing in transgenic plants expressing the coat protein (CP) gene and 3' noncoding region of Cucumber mosaic virus RNA3, as well as in nontransgenic controls. The populations of recombinants in both transgenic and nontransgenic plants were similar to those previously described from Sanger sequencing but many more recombinant types were observed, including a novel class of large deletions removing all or nearly the entire CP gene. These results show that populations of recombinant viral genomes arising de novo can be characterized in detail by pyrosequencing, and confirm that the transgenic plants did not harbor novel recombinants of biosafety concern. This article was published in Mol Plant Microbe Interact and referenced in Medical Safety & Global Health

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