Deep Sequencing of Recombinant Virus Populations in Transgenic and Nontransgenic Plants Infected with Cucumber mosaic virus

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 exp...

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Main Authors: Marco Morroni, Mireille Jacquemond, Mark Tepfer
Format: Article
Language:English
Published: The American Phytopathological Society 2013-07-01
Series:Molecular Plant-Microbe Interactions
Online Access:https://apsjournals.apsnet.org/doi/10.1094/MPMI-02-13-0057-R
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author Marco Morroni
Mireille Jacquemond
Mark Tepfer
author_facet Marco Morroni
Mireille Jacquemond
Mark Tepfer
author_sort Marco Morroni
collection DOAJ
description 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.
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spelling doaj.art-bb2005b1cb6b4ab0a1b686d9a8ba8de72022-12-21T20:01:00ZengThe American Phytopathological SocietyMolecular Plant-Microbe Interactions0894-02821943-77062013-07-0126780181110.1094/MPMI-02-13-0057-RDeep Sequencing of Recombinant Virus Populations in Transgenic and Nontransgenic Plants Infected with Cucumber mosaic virusMarco MorroniMireille JacquemondMark TepferRecombination 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.https://apsjournals.apsnet.org/doi/10.1094/MPMI-02-13-0057-R
spellingShingle Marco Morroni
Mireille Jacquemond
Mark Tepfer
Deep Sequencing of Recombinant Virus Populations in Transgenic and Nontransgenic Plants Infected with Cucumber mosaic virus
Molecular Plant-Microbe Interactions
title Deep Sequencing of Recombinant Virus Populations in Transgenic and Nontransgenic Plants Infected with Cucumber mosaic virus
title_full Deep Sequencing of Recombinant Virus Populations in Transgenic and Nontransgenic Plants Infected with Cucumber mosaic virus
title_fullStr Deep Sequencing of Recombinant Virus Populations in Transgenic and Nontransgenic Plants Infected with Cucumber mosaic virus
title_full_unstemmed Deep Sequencing of Recombinant Virus Populations in Transgenic and Nontransgenic Plants Infected with Cucumber mosaic virus
title_short Deep Sequencing of Recombinant Virus Populations in Transgenic and Nontransgenic Plants Infected with Cucumber mosaic virus
title_sort deep sequencing of recombinant virus populations in transgenic and nontransgenic plants infected with cucumber mosaic virus
url https://apsjournals.apsnet.org/doi/10.1094/MPMI-02-13-0057-R
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AT marktepfer deepsequencingofrecombinantviruspopulationsintransgenicandnontransgenicplantsinfectedwithcucumbermosaicvirus