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Vanilla mosaic virus isolates from French Polynesia and the Cook Islands are Dasheen mosaic virus strains that exclusively infect vanilla

Farreyrol Karin, Pearson Michael N., Grisoni Michel, Cohen Daniel, Beck David. 2006. Vanilla mosaic virus isolates from French Polynesia and the Cook Islands are Dasheen mosaic virus strains that exclusively infect vanilla. Archives of Virology, 151 (5) : pp. 905-919.

Journal article ; Article de revue à facteur d'impact
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Abstract : Sequence was determined for the coat protein (CP) gene and 3' non-translated region (3'NTR) of two vanilla mosaic virus (VanMV) isolates from Vanilla tahitensis, respectively from the Cook Islands (VanMV-CI) and French Polynesia (VanMV-FP). Both viruses displayed distinctive features in the N-terminal region of their CPs; for VanMV-CI, a 16-amino-acid deletion including the aphid transmission-related DAG motif, and for VanMV-FP, a stretch of GTN repeats that putatively belongs to the class of natively unfolded proteins. VanMV-FP CP also has a novel DVG motif in place of the DAG motif, and an uncommon Q//V protease cleavage site. The sequences were compared to a range of Dasheen mosaic virus (DsMV) strains and to potyviruses infecting orchids. Identity was low to DsMV strains across the entire CP coding region and across the 3'NTR, but high across the CP core and the CI-6K2-NIa region. In accordance with current ICTV criteria for species demarcation within the family Potyviridae, VanMV-CI and VanMV-FP are strains of DsMV that exclusively infect vanilla. (Résumé d'auteur)

Mots-clés Agrovoc : Vanilla planifolia, Virus des végétaux, Potyvirus, Virologie, Infection

Mots-clés géographiques Agrovoc : Polynésie française, Îles Cook

Mots-clés complémentaires : Vanilla tahitensis, Dasheen, Mosaïque, Souche, Isolat

Classification Agris : H20 - Plant diseases

Champ stratégique Cirad : Axe 1 (2005-2013) - Intensification écologique

Auteurs et affiliations

  • Farreyrol Karin, University of Auckland (NZL)
  • Pearson Michael N., University of Auckland (NZL)
  • Grisoni Michel, CIRAD-AMIS-UMR PVBMT (REU)
  • Cohen Daniel, New Zealand Institute for Plant and Food Research (NZL)
  • Beck David, New Zealand Institute for Plant and Food Research (NZL)

Autres liens de la publication

Source : Cirad - Agritrop (https://agritrop.cirad.fr/532369/)

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