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Molecular ecology and emergence of tropical plant viruses

Fargette Denis, Fauquet C., Muller Emmanuelle, Peterschmitt Michel, Thresh J.M.. 2006. Molecular ecology and emergence of tropical plant viruses. Annual Review of Phytopathology, 44 : 235-260.

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Liste HCERES des revues (en SHS) : oui

Thème(s) HCERES des revues (en SHS) : Psychologie-éthologie-ergonomie

Résumé : An appreciation of the risks caused by emergent plant viruses is critical in tropical areas that rely heavily on agriculture for subsistence and rural livelihood. Molecular ecology, within 10 years, has unraveled the factors responsible for the emergence of several of the economically most important tropical plant viruses: Rice yellow mottle virus (RYMV), Cassava mosaic geminiviruses (CMGs), Maize streak virus (MSV), and Banana streak virus (BSV). A large range of mechanisms, most unsuspected until recently, were involved: recombination and synergism between virus species, new vector biotypes, genome integration of the virus, host adaptation, and long-distance dispersal. A complex chain of molecular and ecological events resulted in novel virus-vector-plant-environment interactions that led to virus emergence. It invariably involved a major agricultural change: crop introduction, cultural intensification, germplasm movement, and new genotypes. A current challenge is now to complement the analysis of the causes by an assessment of the risks of emergence. Recent attempts to assess the risks of emergence of virulent virus strains are described.

Mots-clés Agrovoc : Oryza, Manihot, Musa, Zea mays, virus des végétaux, épidémiologie, transmission des maladies, distribution spatiale, résistance aux maladies, virus mosaïque manioc, biologie moléculaire, risque, intéraction génotype environnement, introduction de plantes, agriculture intensive, germoplasme, zone tropicale

Mots-clés complémentaires : Mosaïque (virus), Rice yellow mottle, Maize streak virus, Banana streak virus

Classification Agris : H20 - Maladies des plantes

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

Auteurs et affiliations

  • Fargette Denis, CIRAD-CP-UMR DGPC (FRA)
  • Fauquet C., ILTAB (USA)
  • Muller Emmanuelle, CIRAD-AMIS-UMR BGPI (FRA)
  • Peterschmitt Michel, CIRAD-AMIS-UMR BGPI (FRA)
  • Thresh J.M., NRI (GBR)

Autres liens de la publication

Source : Cirad - Agritrop (https://agritrop.cirad.fr/534659/)

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