Exploring the banana streak viruses Musa sp. pathosystem : how does it work ?

Gayral Philippe, Lheureux Fabrice, Noa-Carrazana Juan Carlos, Piffanelli Pietro, Carreel Françoise, Jenny Christophe, Iskra Caruana Marie-Line. 2009. Exploring the banana streak viruses Musa sp. pathosystem : how does it work ?. In : Proceedings of the international symposium on recent advances in banana crop protection for sustainable production and improved livelihoods, White River, South Africa, September 10-14, 2007. Jones David R. (ed.), Van den Bergh Inge (ed.). ISHS. Louvain : ISHS [Belgique], 291-302. (Acta Horticulturae, 828) ISBN 978-90-6605-488-2 International Symposium on recent advances in banana crop protection for sustainable production and improved livelihoods. 1, White River, Afrique du Sud, 10 Septembre 2007/14 Septembre 2007.

Résumé : Banana streak viruses (BSVs) are double-stranded DNA pararetroviruses causing banana streak disease. Recently, numerous outbreaks of the disease occurred in many banana-producing areas in interspecific hybrids (#Musa acuminata# × #Musa balbisiana#) originating from virus-free parents. These infections correlated with the presence of endogenous banana streak viruses (eBSVs), viral DNA sequences integrated in the #M. balbisiana# genome only. Although integration is not needed for the viral replication cycle, some viral integrants are infectious under stress conditions by reconstituting a replication-competent genome after possible homologous recombination events. Even though the wild #M. balbisiana# Pisang Klutuk Wulung (PKW) harbours infectious eBSVs, it is resistant to BSVs. We characterised the genetic and genomic endogenous viral organisation of three BSV species in PKW in order to determine the species responsible for the viral expression in the interspecific F1 progeny.

Mots-clés Agrovoc : Musa, virus des végétaux

Mots-clés complémentaires : Banana streak virus

Classification Agris : H20 - Maladies des plantes
F30 - Génétique et amélioration des plantes

Auteurs et affiliations

• Gayral Philippe, CIRAD-BIOS-UMR BGPI (FRA)
• Lheureux Fabrice
• Noa-Carrazana Juan Carlos, Cinvestav (MEX)
• Piffanelli Pietro, Parco Tecnologico Padano (ITA)
• Carreel Françoise, CIRAD-BIOS-UPR Multiplication végétative (FRA)
• Jenny Christophe, CIRAD-BIOS-UPR Multiplication végétative (GLP) ORCID: 0000-0001-6165-6888
• Iskra Caruana Marie-Line, CIRAD-BIOS-UMR BGPI (FRA) ORCID: 0000-0003-4486-2449

Source : Cirad - Agritrop (https://agritrop.cirad.fr/552622/)

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