Molecular variability of banana mild mosaic virus (BanMMV)

Teycheney Pierre-Yves, Iskra Caruana Marie-Line, Laboureau Nathalie, Carreel Françoise, Candresse Thierry. 2003. Molecular variability of banana mild mosaic virus (BanMMV). In : Advances in plant virology : A three day International conference at CIRAD, Montpellier, France on 29 September - 1 October 2003. AAB, CIRAD-AMIS, INRA, ENSAM, IRD. Warwick : AAB, Résumé, 1 p. International Conference : Advances in Plant Virology, Montpellier, France, 29 September 2003/1 October 2003.

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Abstract : Banana mild mosaic virus (BanMMV) is currently one of the major viral constraints for Musa germplasm exchanges, since the virus is propagated vegetatively. Current data show that synergistic infections with banana streak virus (BSV) or cucumber mosaic virus (BSV) can lead to severe necrotic symptoms, although single infections by BanMMV cause no or only very mild symptoms. Very few data are currently available on the epidemiology of BanMMV. In order to gain insights into it, we have undertaken studies on BanMMV molecular variability. An IC-RTPCR based detection method has been set up. Amplification products, located within the RdRp gene, have been cloned and sequenced for over 35 different accessions originating from CIRAD-Guadeloupe's Musa collection, with at least 3 clones sequenced for each accession. Sequence comparisons show that an important molecular variation exists between isolates originating from distinct accessions. On the other hand, sequences originating from a given accession are generally very conserved. Our results tend to indicate that BanMMV could be preferentially but not exclusively transmitted vegetatively. (Texte intégral)

Mots-clés Agrovoc : Musa, Virus des végétaux, Ressource génétique, Symptome, Épidémiologie, Variation génétique, Infection, Collection de matériel génétique

Mots-clés géographiques Agrovoc : Guadeloupe

Mots-clés complémentaires : Variabilité génétique

Classification Agris : H20 - Plant diseases
F30 - Plant genetics and breeding

Auteurs et affiliations

  • Teycheney Pierre-Yves, CIRAD-FLHOR-BPA (GLP) ORCID: 0000-0002-9754-0745
  • Iskra Caruana Marie-Line, CIRAD-AMIS-PROTECTION DES CULTURES (FRA) ORCID: 0000-0003-4486-2449
  • Laboureau Nathalie, CIRAD-FLHOR-BPA (FRA)
  • Carreel Françoise, CIRAD-FLHOR-BPA (GLP)
  • Candresse Thierry, INRA (FRA)

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