South West Indian Ocean islands tomato begomovirus populations represent a new major monopartite begomovirus group

Delatte Hélène, Martin Darren Patrick, Naze Florence, Goldbach Rob, Reynaud Bernard, Peterschmitt Michel, Lett Jean-Michel. 2005. South West Indian Ocean islands tomato begomovirus populations represent a new major monopartite begomovirus group. Journal of General Virology, 86 (5) : 1533-1542.

Résumé : Biological and molecular properties of Tomato leaf curl Madagascar virus isolates from Morondova and Toliary (ToLCMGV-[Tol], -[Mor]), Tomato leaf curl Mayotte virus isolates from Dembeni and Kahani (ToLCYTV-[Dem], -[Kah]) and a Tomato yellow leaf curl virus isolate from Réunion (TYLCV-Mld[RE]) were determined. Full-length DNA components of the five isolates from Madagascar, Mayotte and Réunion were cloned and sequenced and, with the exception of ToLCMGV-[Tol], were shown to be both infectious in tomato and transmissible by Bemisia tabaci. Sequence analysis revealed that these viruses had genome organizations of monopartite begomoviruses and that both ToLCMGV and ToLCYTV belong to the African begomoviruses but represent a distinct monophyletic group that we have tentatively named the South West islands of the Indian Ocean (SWIO). All of the SWIO isolates examined were apparently complex recombinants. None of the sequences within the recombinant regions closely resembled that of any known non-SWIO begomovirus, suggesting an isolation of these virus populations.

Mots-clés Agrovoc : Solanum lycopersicum, virose, identification, Bemisia tabaci, vecteur de maladie, génome, séquence nucléotidique, begomovirus

Mots-clés géographiques Agrovoc : océan Indien, Madagascar, Mayotte, La Réunion, France

Mots-clés complémentaires : Tomato yellow leaf curl

Classification Agris : H20 - Maladies des plantes

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

Auteurs et affiliations

• Delatte Hélène, CIRAD-AMIS-PROTECTION DES CULTURES (REU)
• Martin Darren Patrick, Institute of Infectious Diseases and Molecular Medicine (ZAF)
• Naze Florence, CIRAD-AMIS-PROTECTION DES CULTURES (REU)
• Goldbach Rob, Wageningen University (NLD)
• Reynaud Bernard, CIRAD-AMIS-PROTECTION DES CULTURES (REU)
• Peterschmitt Michel, CIRAD-AMIS-PROTECTION DES CULTURES (FRA)
• Lett Jean-Michel, CIRAD-AMIS-PROTECTION DES CULTURES (REU)

Source : Cirad - Agritrop (https://agritrop.cirad.fr/526543/)

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