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Assessing the effect of provitamin a on maize field resistance to aflatoxin and fumonisin contamination

dc.contributor.authorMboup, M.
dc.contributor.authorAduramigba-Modupe, A.O.
dc.contributor.authorOlasanmi, B.
dc.contributor.authorMengesha Abera, W.
dc.contributor.authorMeseka, S.K.
dc.contributor.authorDieng, I.
dc.contributor.authorMenkir, A.
dc.contributor.authorOrtega-Beltran, A.
dc.date.accessioned2024-09-20T11:07:19Z
dc.date.available2024-09-20T11:07:19Z
dc.date.issued2024-11
dc.identifier.citationMboup, M., Aduramigba-Modupe, A.O., Olasanmi, B., Mengesha Abera, W., Meseka, S.K., Dieng, I., ... & Ortega-Beltran, A. (2024). Assessing the effect of provitamin a on maize field resistance to aflatoxin and fumonisin contamination. Crop Protection, 185: 106892, 1-9.
dc.identifier.issn0261-2194
dc.identifier.urihttps://hdl.handle.net/20.500.12478/8546
dc.description.abstractVitamin A deficiency in sub-Saharan Africa is mainly being addressed through crop biofortification. Several high provitamin A (PVA) maize varieties have been released as part of these measures. However, these varieties are grown in areas where Aspergillus ear rot (AER) and Fusarium ear rot (FER) frequently occur, leading to contamination with mycotoxins, which in turn reduce the yield and grain quality. Chronic mycotoxin exposure leads to serious public health problems. Therefore, PVA maize varieties should be resistant to mycotoxin contamination. In a previous study, we generated 120 PVA hybrids by crossing 60 PVA inbreds and two testers with contrasting PVA content. Several inbreds resistant to aflatoxin were detected through laboratory-based kernel screening assays. In the current study, 21 PVA inbred lines with varying carotenoid content inoculated with toxigenic isolates of A. flavus and F. verticillioides were evaluated in field trials conducted at two locations in Nigeria for resistance to ear rots and mycotoxin production. Inbred lines resistant to AER, FER, aflatoxin and fumonisin contamination were identified. High PVA inbred lines were less susceptible to the ear rots, aflatoxin, and fumonisin than those with low PVA content. There were negative correlations between PVA content and each of AER (r = −0.28, P < 0.0001), FER (r = −0.37, P < 0.0001), aflatoxin (r = −0.15, P < 0.05), and fumonisin (r = −0.27, P < 0.0001). Three promising inbred lines were resistant to both aflatoxin and fumonisin. Moreover, the inbred TZI1715 combined resistance to AER, FER, aflatoxin, and fumonisin with desirable general combining ability for high β-carotene and total PVA content. These results suggest that the PVA biofortified maize developed to address vitamin A deficiency can also contribute to reduced exposure to aflatoxin and fumonisin.
dc.description.sponsorshipAfrican Union Commission
dc.description.sponsorshipCGIAR Trust Fund
dc.format.extent1-9
dc.language.isoen
dc.subjectDisease Resistance
dc.subjectAflatoxins
dc.subjectFumonisins
dc.subjectProvitamins
dc.subjectMaize
dc.titleAssessing the effect of provitamin a on maize field resistance to aflatoxin and fumonisin contamination
dc.typeJournal Article
cg.contributor.crpMaize
cg.contributor.affiliationUniversity of Ibadan
cg.contributor.affiliationInternational Institute of Tropical Agriculture
cg.coverage.regionAfrica
cg.coverage.regionWest Africa
cg.coverage.countryNigeria
cg.coverage.hubHeadquarters and Western Africa Hub
cg.researchthemeBiotech and Plant Breeding
cg.identifier.bibtexciteidMBOUP:2024
cg.isijournalISI Journal
cg.authorship.typesCGIAR and developing country institute
cg.iitasubjectAflatoxin
cg.iitasubjectAgronomy
cg.iitasubjectFood Security
cg.iitasubjectMaize
cg.iitasubjectPlant Breeding
cg.iitasubjectPlant Production
cg.journalCrop Protection
cg.accessibilitystatusLimited Access
cg.reviewstatusPeer Review
cg.usagerightslicenseCopyrighted; all rights reserved
cg.targetaudienceScientists
cg.identifier.doihttps://doi.org/10.1016/j.cropro.2024.106892
cg.iitaauthor.identifierWende Mengesha: 0000-0002-2239-7323
cg.iitaauthor.identifierSILVESTRO MESEKA: 0000-0003-1004-2450
cg.iitaauthor.identifierIbnou Dieng: 0000-0002-1051-9143
cg.iitaauthor.identifierAbebe Menkir: 0000-0002-5907-9177
cg.iitaauthor.identifierAlejandro Ortega-Beltran: 0000-0003-3747-8094
cg.futureupdate.requiredNo
cg.identifier.issue: 106892
cg.identifier.volume185
cg.contributor.acknowledgementsThe authors appreciate the staff of IITA Maize Improvement Program for their technical assistance in the field research, and staff of IITA Pathology Laboratory and Mycotoxin Unit for their contributions to the execution of this research.


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