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Prevalence of aflatoxin contamination in maize and groundnut in Ghana: population structure, distribution, and toxigenicity of the causal agents

dc.contributor.authorAgbetiameh, D.
dc.contributor.authorOrtega-Beltran, A.
dc.contributor.authorAwuah, R.T.
dc.contributor.authorAtehnkeng, J.
dc.contributor.authorCotty, P.J.
dc.contributor.authorBandyopadhyay, Ranajit
dc.date.accessioned2019-12-04T11:21:41Z
dc.date.available2019-12-04T11:21:41Z
dc.date.issued2018-04
dc.identifier.citationAgbetiameh, D., Ortega-Beltran, A., Awuah, R.T., Atehnkeng, J., Cotty, P.J. & Bandyopadhyay, R. (2018). Prevalence of aflatoxin contamination in maize and groundnut in Ghana: population structure, distribution, and toxigenicity of the causal agents. Plant Disease, 102(4), 764-772.
dc.identifier.issn0191-2917
dc.identifier.urihttps://hdl.handle.net/20.500.12478/3849
dc.descriptionArticle purchased
dc.description.abstractAflatoxin contamination in maize and groundnut is perennial in Ghana with substantial health and economic burden on the population. The present study examined for the first time the prevalence of aflatoxin contamination in maize and groundnut in major producing regions across three agroecological zones (AEZs) in Ghana. Furthermore, the distribution and aflatoxin-producing potential of Aspergillus species associated with both crops were studied. Out of 509 samples (326 of maize and 183 of groundnut), 35% had detectable levels of aflatoxins. Over 15% of maize and 11% of groundnut samples exceeded the aflatoxin threshold limits set by the Ghana Standards Authority of 15 and 20 ppb, respectively. Mycoflora analyses revealed various species and morphotypes within the Aspergillus section Flavi. A total of 5,083 isolates were recovered from both crops. The L morphotype of Aspergillus flavus dominated communities with 93.3% of the population, followed by Aspergillus spp. with S morphotype (6%), A. tamarii (0.4%), and A. parasiticus (0.3%). Within the L morphotype, the proportion of toxigenic members was significantly (P < 0.05) higher than that of atoxigenic members across AEZs. Observed and potential aflatoxin concentrations indicate that on-field aflatoxin management strategies need to be implemented throughout Ghana. The recovered atoxigenic L morphotype fungi are genetic resources that can be employed as biocontrol agents to limit aflatoxin contamination of maize and groundnut in Ghana.
dc.description.sponsorshipBill & Melinda Gates Foundation
dc.description.sponsorshipPartnership for Aflatoxin Control in Africa
dc.description.sponsorshipUnited States Department of Agriculture
dc.format.extent764-772
dc.language.isoen
dc.subjectAflatoxins
dc.subjectMaize
dc.subjectAspergillus Flavus
dc.subjectContamination
dc.titlePrevalence of aflatoxin contamination in maize and groundnut in Ghana: population structure, distribution, and toxigenicity of the causal agents
dc.typeJournal Article
dc.description.versionPeer Review
cg.contributor.crpAgriculture for Nutrition and Health
cg.contributor.crpMaize
cg.contributor.affiliationInternational Institute of Tropical Agriculture
cg.contributor.affiliationKwame Nkrumah University of Science and Technology
cg.contributor.affiliationChitedze Agricultural Research Station, Malawi
cg.contributor.affiliationUniversity of Arizona
cg.coverage.regionAfrica
cg.coverage.regionWest Africa
cg.coverage.countryGhana
cg.creator.identifierAlejandro Ortega-Beltran: 0000-0003-3747-8094
cg.creator.identifierRanajit Bandyopadhyay: 0000-0003-2422-4298
cg.researchthemePLANT PRODUCTION & HEALTH
cg.isijournalISI Journal
cg.authorship.typesCGIAR and developing country institute
cg.iitasubjectMaize
cg.iitasubjectPlant Diseases
cg.iitasubjectPlant Health
cg.iitasubjectPlant Production
cg.journalPlant Disease
cg.howpublishedFormally Published
cg.accessibilitystatusLimited Access
local.dspaceid96142
cg.targetaudienceScientists
cg.identifier.doihttps://doi.org/10.1094/PDIS-05-17-0749-RE


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