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dc.contributor.authorZinga, I.
dc.contributor.authorChiroleu, F.
dc.contributor.authorLegg, J.P.
dc.contributor.authorLefeuvre, P.
dc.contributor.authorKomba, E.
dc.contributor.authorSemballa, S.
dc.contributor.authorYandia, S.P.
dc.contributor.authorMandakombo, N.
dc.contributor.authorReynaud, B.
dc.contributor.authorLett, J.
dc.date.accessioned2019-12-04T11:03:25Z
dc.date.available2019-12-04T11:03:25Z
dc.date.issued2013
dc.identifier.citationZinga, I., Chiroleu, F., Legg, J., Lefeuvre, P., Komba, E. K., Semballa, S., ... & Lett, J. M. (2013). Epidemiological assessment of cassava mosaic disease in Central African Republic reveals the importance of mixed viral infection and poor health of plant cuttings. Crop Protection, 44, 6-12.
dc.identifier.issn0261-2194
dc.identifier.urihttps://hdl.handle.net/20.500.12478/1052
dc.description.abstractCassava is a vital crop in Africa and represents the main food crop in Central African Republic (CAR). CAR has recently faced large reductions in cassava yields that have led to a surge in market prices. To better understand the causes of the reduction in yield, we identified biotic constraints to cassava production by means of a large-scale plant epidemiological survey conducted in 2007 and 2008. Standard protocols were used for the assessment of the major cassava pests and diseases. Cassava mosaic disease (CMD) was shown to be the most serious constraint to cassava in CAR, with symptoms observed at all localities surveyed. CMD is distributed throughout the country, with an average incidence of 85%. Importantly, 94% of diseased plants had cutting-derived CMD infection suggesting that farmers mostly use virus-infected cuttings for planting. PCR amplification and direct sequencing of partial fragments of the Rep ORF revealed that the causal agents of CMD in CAR are African cassava mosaic virus (ACMV) and the Uganda strain of East African cassava mosaic virus (EACMV-UG). We also demonstrated that 58% of CMD samples present mixed infections (ACMV and EACMV-UG) and that these samples had significantly higher symptom severities. Our results suggest that mixed infection and synergism between CMGs, could be an important feature in the yield reduction of cassava plants in CAR, similar to the other severe CMD epidemics reported in East Africa.
dc.language.isoen
dc.subjectCassava
dc.subjectPests
dc.subjectDiseases
dc.titleEpidemiological assessment of cassava mosaic disease in Central African Republic reveals the importance of mixed viral infection and poor health of plant cuttings
dc.typeJournal Article
dc.description.versionPeer Review
cg.contributor.crpRoots, Tubers and Bananas
cg.contributor.affiliationUniversité de Bangui
cg.contributor.affiliationPôle de Protection des Plantes, France
cg.contributor.affiliationUniversité de La Réunion
cg.contributor.affiliationInternational Institute of Tropical Agriculture
cg.coverage.regionAfrica
cg.coverage.regionEast Africa
cg.coverage.regionCentral Africa
cg.coverage.countryUganda
cg.isijournalISI Journal
cg.authorship.typesCGIAR and advanced research institute
cg.iitasubjectCassava
cg.journalCrop Protection
cg.howpublishedFormally Published
cg.accessibilitystatusLimited Access
local.dspaceid78050
cg.identifier.doihttps://dx.doi.org/10.1016/j.cropro.2012.10.010


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