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Evaluation of atoxigenic isolates of Aspergillus flavus as potential biocontrol agents for aflatoxin in maize

dc.contributor.authorAtehnkeng, J.
dc.contributor.authorOjiambo, P.S.
dc.contributor.authorIkotun, T.
dc.contributor.authorSikora, R.A.
dc.contributor.authorCotty, P.J.
dc.contributor.authorBandyopadhyay, Ranajit
dc.date.accessioned2019-12-04T11:14:41Z
dc.date.available2019-12-04T11:14:41Z
dc.date.issued2008
dc.identifier.citationAtehnkeng, J., Ojiambo, P.S., Ikotun, T., Sikora, R.A., Cotty, P.J. & Bandyopadhyay, R. (2008). Evaluation of atoxigenic isolates of Aspergillus flavus as potential biocontrol agents for aflatoxin in maize. Food Additives and Contaminants, 25(10), 1264-1271.
dc.identifier.issn0265-203X
dc.identifier.urihttps://hdl.handle.net/20.500.12478/2832
dc.descriptionPublished online: 26 Sept 2008
dc.description.abstractAflatoxin contamination resulting from maize infection by Aspergillus flavus is both an economic and a public health concern. Therefore, strategies for controlling aflatoxin contamination in maize are being investigated. The abilities of eleven naturally occurring atoxigenic isolates in Nigeria to reduce aflatoxin contamination in maize were evaluated in grain competition experiments and in field studies during the 2005 and 2006 growing seasons. Treatments consisted of inoculation of either grains in vials or ears at mid-silking stage in field plots, with the toxigenic isolate (La3228) or atoxigenic isolate alone and co-inoculation of each atoxigenic isolate and La3328. Aflatoxin B1þB2 concentrations were significantly (p50.05) lower in the co-inoculation treatments compared with the treatment in which the aflatoxin-producing isolate La3228 was inoculated alone. Relative levels of aflatoxin B1þB2 reduction ranged from 70.1% to 99.9%. Among the atoxigenics, two isolates from Lafia, La3279 and La3303, were most effective at reducing aflatoxin B1þB2 concentrations in both laboratory and field trials. These two isolates have potential value as agents for the biocontrol of aflatoxin contamination in maize. Because these isolates are endemic to West Africa, they are both more likely than introduced isolates to be well adapted to West African environments and to meet regulatory concerns over their use throughout that region.
dc.description.sponsorshipFederal Ministry for Economic Cooperation and Development, Germany
dc.language.isoen
dc.subjectAflatoxin Contamination
dc.subjectCorn
dc.subjectMycotoxin
dc.subjectCompetitive Exclusion
dc.subjectAtoxigenic
dc.subjectCo-Inoculation
dc.titleEvaluation of atoxigenic isolates of Aspergillus flavus as potential biocontrol agents for aflatoxin in maize
dc.typeJournal Article
dc.description.versionPeer Review
cg.contributor.affiliationInternational Institute of Tropical Agriculture
cg.contributor.affiliationUniversity of Ibadan
cg.contributor.affiliationNorth Carolina State University
cg.contributor.affiliationUniversity of Bonn
cg.contributor.affiliationUniversity of Arizona
cg.coverage.regionAfrica
cg.coverage.regionAcp
cg.coverage.regionWest Africa
cg.coverage.regionNorth America
cg.coverage.regionEurope
cg.coverage.countryNigeria
cg.coverage.countryUnited States
cg.coverage.countryGermany
cg.isijournalISI Journal
cg.authorship.typesCGIAR and developing country institute
cg.iitasubjectPlant Production
cg.iitasubjectPlant Genetic Resources
cg.iitasubjectAflatoxin
cg.iitasubjectFood Security
cg.iitasubjectHandling, Transport, Storage And Protection Of Agricultural Products
cg.iitasubjectLivelihoods
cg.iitasubjectDisease Control
cg.iitasubjectCrop Husbandry
cg.iitasubjectPlant Diseases
cg.iitasubjectPests Of Plants
cg.accessibilitystatusLimited Access
local.dspaceid93933
cg.identifier.doihttps://dx.doi.org/10.1080/02652030802112635


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