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Epidemiological analysis of Cassava Mosaic and Brown Streak Diseases, and Bemisia tabaci in the Comoros Islands

dc.contributor.authorShirima, R.R.
dc.contributor.authorWosula, E.N.
dc.contributor.authorHamza, A.A.
dc.contributor.authorMohammed, N.A.
dc.contributor.authorMouigni, H.
dc.contributor.authorNouhou, S.
dc.contributor.authorMchinda, N.M.
dc.contributor.authorCeasar, G.
dc.contributor.authorAmour, R.
dc.contributor.authorNjukwe, E.
dc.contributor.authorLegg, J.
dc.date.accessioned2023-04-20T08:26:09Z
dc.date.available2023-04-20T08:26:09Z
dc.date.issued2022-09-30
dc.identifier.citationShirima, R. R., Wosula, E. N., Hamza, A. A., Mohammed, N. A., Mouigni, H., Nouhou, S., ... & Legg, J. P. (2022). Epidemiological analysis of Cassava Mosaic and Brown Streak Diseases, and Bemisia tabaci in the Comoros Islands. Viruses, 14(10): 2165, 1-18.
dc.identifier.issn1999-4915
dc.identifier.urihttps://hdl.handle.net/20.500.12478/8146
dc.description.abstractA comprehensive assessment of cassava brown streak disease (CBSD) and cassava mosaic disease (CMD) was carried out in Comoros where cassava yield (5.7 t/ha) is significantly below the African average (8.6 t/ha) largely due to virus diseases. Observations from 66 sites across the Comoros Islands of Mwali, Ngazidja, and Ndzwani revealed that 83.3% of cassava fields had foliar symptoms of CBSD compared with 95.5% for CMD. Molecular diagnostics confirmed the presence of both cassava brown streak ipomoviruses (CBSIs) and cassava mosaic begomoviruses (CMBs). Although real-time RT-PCR only detected the presence of one CBSI species (Cassava brown streak virus, CBSV) the second species (Ugandan cassava brown streak virus, UCBSV) was identified using next-generation high-throughput sequencing. Both PCR and HTS detected the presence of East African cassava mosaic virus (EACMV). African cassava mosaic virus was not detected in any of the samples. Four whitefly species were identified from a sample of 131 specimens: Bemisia tabaci, B. afer, Aleurodicus dispersus, and Paraleyrodes bondari. Cassava B. tabaci comprised two mitotypes: SSA1-SG2 (89%) and SSA1-SG3 (11%). KASP SNP genotyping categorized 82% of cassava B. tabaci as haplogroup SSA-ESA. This knowledge will provide an important base for developing and deploying effective management strategies for cassava viruses and their vectors.
dc.description.sponsorshipInternational Fund for Agricultural Development
dc.format.extent1-18
dc.language.isoen
dc.subjectCassava
dc.subjectSurveillance Systems
dc.subjectFood Security
dc.subjectClimate Change
dc.subjectPlant Diseases
dc.subjectBemisia Tabaci
dc.subjectLivelihoods
dc.subjectSub-Saharan Africa
dc.titleEpidemiological analysis of Cassava Mosaic and Brown Streak Diseases, and Bemisia tabaci in the Comoros Islands
dc.typeJournal Article
cg.contributor.crpRoots, Tubers and Bananas
cg.contributor.affiliationInternational Institute of Tropical Agriculture
cg.contributor.affiliationInstitut National de Recherche pour L’Agriculture, La Pêche et L’Environnement, Comoros
cg.contributor.affiliationWest and Central African Council for Agricultural Research and Development
cg.coverage.regionAfrica
cg.coverage.regionEast Africa
cg.coverage.countryComoros
cg.coverage.hubEastern Africa Hub
cg.researchthemePlant Production and Health
cg.identifier.bibtexciteidSHIRIMA:2022
cg.isijournalISI Journal
cg.authorship.typesCGIAR and developing country institute
cg.iitasubjectAgronomy
cg.iitasubjectCassava
cg.iitasubjectClimate Change
cg.iitasubjectFood Security
cg.iitasubjectLivelihoods
cg.iitasubjectPlant Breeding
cg.iitasubjectPlant Diseases
cg.iitasubjectPlant Health
cg.iitasubjectPlant Production
cg.journalViruses
cg.notesOpen Access Journal; Published online: 30 Sep 2022
cg.accessibilitystatusOpen Access
cg.reviewstatusPeer Review
cg.usagerightslicenseCreative Commons Attribution 4.0 (CC BY 0.0)
cg.targetaudienceScientists
cg.identifier.doihttps://dx.doi.org/10.3390/v14102165
cg.iitaauthor.identifierEVERLYNE WOSULA: 0000-0001-5693-0889
cg.iitaauthor.identifierJames Legg: 0000-0003-4140-3757
cg.futureupdate.requiredNo
cg.identifier.issue10: 2165
cg.identifier.volume14


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