A Reassessment of the Epidemiology of Rice Yellow Mottle Virus Following Recent Advances In Field And Molecular Studies

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dc.contributor.authorTraore, Oumar
dc.contributor.authorGalzi, Agnès P.
dc.contributor.authorFatogoma, Sorho
dc.contributor.authorSarra, Soungalo
dc.contributor.authorRakotomalala, Mbolarinosy
dc.contributor.authorSangu, Emmanuel
dc.contributor.authorKanyeka, Zakaria L.
dc.contributor.authorSere, Y.
dc.contributor.authorKonaté, Gnissa
dc.contributor.authorFargette, Denis
dc.date.accessioned2016-07-08T12:22:47Z
dc.date.available2016-07-08T12:22:47Z
dc.date.issued2009-02
dc.description.abstractThe available knowledge on the epidemiology of Rice yellow mottle virus (RYMV) is reassessed in the light of major advances in field and molecular studies of the disease it causes in rice. Previously un-described means of transmission by mammals and through leaf contact have been discovered recently. Several agricultural practices, including the use of seedbed nurseries, have also contributed to a massive build-up of RYMV inoculum. Phytosanitation is now known to be critical to reduce disease incidence in rice. A new model of the ecology of RYMV in which man plays a central role has emerged. Furthermore, estimates of the evolutionary rate of change of RYMV provided a time-frame for its epidemiology, the first attempt for a plant virus. Earlier interpretations of the patterns of virus diversity which assumed a long-term evolution, and assigned a major role to adaptive events had to be discarded. In contrast, a wave-like model of dispersal of RYMV, which postulates its initial diversification in East Africa, followed by westward spread across the continent, was developed, refined and dated. The most salient -- and largely unexpected -- finding is that RYMV emerged recently and subsequently spread rapidly throughout Africa in the last two centuries. Diversification and spread of RYMV has been concomitant with an extension of rice cultivation in Africa since the 19th century. This major agro-ecological change increased the encounters between primary hosts of RYMV and cultivated rice. It also modified the landscape ecology in ways that facilitated virus spread.en_US
dc.identifier.citationTraoré, O., Pinel-Galzi, A., Sorho, F., Sarra, S., Rakotomalala, M., Sangu, E., Kanyeka, Z., Séré, Y., Konaté, G. and Fargette, D., 2009. A reassessment of the epidemiology of Rice yellow mottle virus following recent advances in field and molecular studies. Virus research, 141(2), pp.258-267.en_US
dc.identifier.doi10.1016/j.virusres.2009.01.011 · Source: PubMed
dc.identifier.urihttp://hdl.handle.net/20.500.11810/2919
dc.language.isoenen_US
dc.publisherElsevieren_US
dc.subjectAfricaen_US
dc.subjectEcologyen_US
dc.subjectEvolutionen_US
dc.subjectPhylogeographyen_US
dc.subjectPlant virusen_US
dc.subjectRiceen_US
dc.titleA Reassessment of the Epidemiology of Rice Yellow Mottle Virus Following Recent Advances In Field And Molecular Studiesen_US
dc.typeJournal Article, Peer Revieweden_US
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