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flatoxin contamination of maize and groundnut in Burundi: distribution of contamination, identification of causal agents and potential biocontrol genotypes of Aspergillus flavus

dc.contributor.authorNsabiyumva, G.
dc.contributor.authorMutegi, C.
dc.contributor.authorWagacha, M.
dc.contributor.authorMohamed, A.B.
dc.contributor.authorNjeru, N.K.
dc.contributor.authorNdayihanzamaso, P.
dc.contributor.authorNiyuhire, C.
dc.contributor.authorAtehnkeng, J.
dc.contributor.authorNjukwe, E.
dc.contributor.authorCallicott, K.
dc.contributor.authorCotty, P.
dc.contributor.authorOrtega-Beltran, A.
dc.contributor.authorBandyopadhyay, R.
dc.date.accessioned2023-10-15T16:56:03Z
dc.date.available2023-10-15T16:56:03Z
dc.date.issued2023-03-13
dc.identifier.citationNsabiyumva, G., Mutegi, C., Wagacha, M., Mohamed, A.B., Njeru, N.K., Ndayihanzamaso, P., ... & Bandyopadhyay, R. (2023). Aflatoxin contamination of maize and groundnut in Burundi: distribution of contamination, identification of causal agents and potential biocontrol genotypes of Aspergillus flavus. Frontiers in Microbiology, 14: 1106543, 1-13.
dc.identifier.issn1664-302X
dc.identifier.urihttps://hdl.handle.net/20.500.12478/8284
dc.description.abstractAflatoxin contamination of the staples maize and groundnut is a concern for health and economic impacts across sub-Saharan Africa. The current study (i) determined aflatoxin levels in maize and groundnut collected at harvest in Burundi, (ii) characterized populations of Aspergillus section Flavi associated with the two crops, and (iii) assessed aflatoxin-producing potentials among the recovered fungi. A total of 120 groundnut and 380 maize samples were collected at harvest from eight and 16 provinces, respectively. Most of the groundnut (93%) and maize (87%) contained aflatoxin below the European Union threshold, 4 μg/kg. Morphological characterization of the recovered Aspergillus section Flavi fungi revealed that the L-morphotype of A. flavus was the predominant species. Aflatoxin production potentials of the L-morphotype isolates were evaluated in maize fermentations. Some isolates produced over 137,000 μg/kg aflatoxin B 1 . Thus, despite the relatively low aflatoxin levels at harvest, the association of both crops with highly toxigenic fungi poses significant risk of post-harvest aflatoxin contamination and suggests measures to mitigate aflatoxin contamination in Burundi should be developed. Over 55% of the L-morphotype A. flavus did not produce aflatoxins. These atoxigenic L-morphotype fungi were characterized using molecular markers. Several atoxigenic genotypes were detected across the country and could be used as biocontrol agents. The results from the current study hold promise for developing aflatoxin management strategies centered on biocontrol for use in Burundi to reduce aflatoxin contamination throughout the value chain.
dc.description.sponsorshipUnited States Agency for International Development
dc.description.sponsorshipBill & Melinda Gates Foundation
dc.format.extent1-13
dc.language.isoen
dc.subjectMaize
dc.subjectFood Security
dc.subjectBiological Control
dc.subjectAspergillus Flavus
dc.subjectBiodiversity
dc.subjectValue Chain
dc.subjectAflatoxins
dc.titleflatoxin contamination of maize and groundnut in Burundi: distribution of contamination, identification of causal agents and potential biocontrol genotypes of Aspergillus flavus
dc.typeJournal Article
cg.contributor.crpMaize
cg.contributor.affiliationInstitut des Sciences Agronomiques du Burundi
cg.contributor.affiliationInternational Institute of Tropical Agriculture
cg.contributor.affiliationUniversity of Nairobi
cg.contributor.affiliationKenya Agricultural and Livestock Research Organization
cg.contributor.affiliationUnited States Department of Agriculture, Agricultural Research Service
cg.contributor.affiliationOcean University of China
cg.coverage.regionAfrica
cg.coverage.regionCentral Africa
cg.coverage.countryBurundi
cg.coverage.hubEastern Africa Hub
cg.coverage.hubCentral Africa Hub
cg.coverage.hubHeadquarters and Western Africa Hub
cg.researchthemePlant Production and Health
cg.identifier.bibtexciteidNSABIYUMVA:2023
cg.isijournalISI Journal
cg.authorship.typesCGIAR and developing country institute
cg.iitasubjectAflatoxin
cg.iitasubjectAgronomy
cg.iitasubjectBiodiversity
cg.iitasubjectDisease Control
cg.iitasubjectFood Security
cg.iitasubjectMaize
cg.iitasubjectPlant Breeding
cg.iitasubjectPlant Diseases
cg.iitasubjectPlant Health
cg.iitasubjectPlant Production
cg.iitasubjectValue Chains
cg.journalFrontiers in Microbiology
cg.notesOpen Access Journal; Published online: 13 Mar 2023
cg.accessibilitystatusOpen Access
cg.reviewstatusPeer Review
cg.usagerightslicenseCreative Commons Attribution 4.0 (CC BY 0.0)
cg.targetaudienceScientists
cg.identifier.doihttps://doi.org/10.3389/fmicb.2023.1106543
cg.iitaauthor.identifierCharity Mutegi: 0000-0002-3188-0480
cg.iitaauthor.identifierEmmanuel NJUKWE: 0000-0002-1575-1814
cg.iitaauthor.identifierAlejandro Ortega-Beltran: 0000-0003-3747-8094
cg.iitaauthor.identifierRanajit Bandyopadhyay: 0000-0003-2422-4298
cg.futureupdate.requiredNo
cg.identifier.issue1106543
cg.identifier.volume14


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