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Performance of testers with contrasting provitamin A content to evaluate provitamin A maize for resistance to Aspergillus flavus infection and aflatoxin production

dc.contributor.authorMboup, M.
dc.contributor.authorAduramigba-Modupe, A.O.
dc.contributor.authorSayadi Maazou, A.R.
dc.contributor.authorOlasanmi, B.
dc.contributor.authorMengesha Abera, W.
dc.contributor.authorMeseka, S.K.
dc.contributor.authorDieng, I.
dc.contributor.authorBandyopadhyay, R.
dc.contributor.authorMenkir, A.
dc.contributor.authorOrtega-Beltran, A.
dc.date.accessioned2023-10-16T07:58:01Z
dc.date.available2023-10-16T07:58:01Z
dc.date.issued2023-05-10
dc.identifier.citationMboup, M., Aduramigba-Modupe, A. O., Maazou, A.R., Olasanmi, B., Mengesha Abera, W., Meseka, S.K., ... & Ortega-Beltran, A. (2023). Performance of testers with contrasting provitamin A content to evaluate provitamin A maize for resistance to Aspergillus flavus infection and aflatoxin production. Frontiers in Plant Science, 14: 1167628, 1-12.
dc.identifier.issn1664-462X
dc.identifier.urihttps://hdl.handle.net/20.500.12478/8285
dc.description.abstractIn sub-Saharan Africa (SSA), millions of people depend on maize as a primary staple. However, maize consumers in SSA may be exposed to malnutrition due to vitamin A deficiency (VAD) and unsafe aflatoxin levels, which can lead to serious economic and public health problems. Provitamin A (PVA) biofortified maize has been developed to alleviate VAD and may have additional benefits such as reduced aflatoxin contamination. In this study, maize inbred testers with contrasting PVA content in grain were used to identify inbred lines with desirable combining ability for breeding to enhance their level of resistance to aflatoxin. Kernels of 120 PVA hybrids generated by crossing 60 PVA inbreds with varying levels of PVA (5.4 to 51.7 µg/g) and two testers (low and high PVA, 14.4 and 25.0 µg/g, respectively) were inoculated with a highly toxigenic strain of Aspergillus flavus. Aflatoxin had a negative genetic correlation with β-carotene (r = −0.29, p < 0.0001) and PVA (r = −0.23, p < 0.0001), indicating that hybrids with high PVA content accumulated less aflatoxin than those with low to medium PVA. Both general combining ability (GCA) and specific combining ability (SCA) effects of lines and testers were significant for aflatoxin accumulation, number of spores, PVA, and other carotenoids, with additive gene actions playing a prominent role in regulating the mode of inheritance (GCA/SCA ratio >0.5). Eight inbreds had combined significant negative GCA effects for aflatoxin accumulation and spore count with significant positive GCA effects for PVA. Five testcrosses had combined significant negative SCA effects for aflatoxin with significant positive SCA effects for PVA. The high PVA tester had significant negative GCA effects for aflatoxin, lutein, β-carotene, and PVA. The study identified lines that can be used as parents to develop superior hybrids with high PVA and reduced aflatoxin accumulation. Overall, the results point out the importance of testers in maize breeding programs to develop materials that can contribute to controlling aflatoxin contamination and reducing VAD.
dc.description.sponsorshipAfrican Union Commission
dc.description.sponsorshipCGIAR Trust Fund
dc.format.extent1-12
dc.language.isoen
dc.subjectAflatoxins
dc.subjectMaize
dc.subjectFood Security
dc.subjectProvitamins
dc.subjectCarotenoids
dc.titlePerformance of testers with contrasting provitamin A content to evaluate provitamin A maize for resistance to Aspergillus flavus infection and aflatoxin production
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.researchthemePlant Production and Health
cg.identifier.bibtexciteidMBOUP:2023
cg.isijournalISI Journal
cg.authorship.typesCGIAR and developing country institute
cg.iitasubjectAflatoxin
cg.iitasubjectAgronomy
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 Plant Science
cg.notesOpen Access Journal; Published online: 10 May 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/fpls.2023.1167628
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.identifierRanajit Bandyopadhyay: 0000-0003-2422-4298
cg.iitaauthor.identifierAbebe Menkir: 0000-0002-5907-9177
cg.iitaauthor.identifierAlejandro Ortega-Beltran: 0000-0003-3747-8094
cg.futureupdate.requiredNo
cg.identifier.issue1167628
cg.identifier.volume14


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