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Distribution of Aspergillus section Flavi in soils of maize fields in three agroecological zones of Nigeria

dc.contributor.authorDonner, M.
dc.contributor.authorAtehnkeng, J.
dc.contributor.authorSikora, R.A.
dc.contributor.authorBandyopadhyay, Ranajit
dc.contributor.authorCotty, P.J.
dc.date.accessioned2019-12-04T11:11:44Z
dc.date.available2019-12-04T11:11:44Z
dc.date.issued2009
dc.identifier.citationDonner, M., Atehnkeng, J., Sikora, R.A., Bandyopadhyay, R. & Cotty, P.J. (2009). Distribution of Aspergillus section Flavi in soils of maize fields in three agroecological zones of Nigeria. Soil Biology and Biochemistry, 41(1), 37-44.
dc.identifier.issn0038-0717
dc.identifier.urihttps://hdl.handle.net/20.500.12478/2488
dc.description.abstractFungal communities in soils of Nigerian maize fields were examined to determine distributions ofaflatoxin-producing fungi and to identify endemic atoxigenic strains of potential value as biologicalcontrol agents for limiting aflatoxin contamination in West African crops. Over 1000 isolates belonging toAspergillussection Flavi were collected from soil of 55 Nigerian maize fields located in three agro-ecological zones by dilution plating onto modified Rose Bengal agar. The most common member ofAspergillussection Flavi (85% of isolates) was theA. flavusL-strain followed by the unnamed taxon knownas strain SBG(8%),A. tamarii(6%) andA. parasiticus(1%). Highest incidence of SBGwas in Zaria district, andlowest was in Ogbomosho and Ado-Ekiti districts. Only 44% of 492A. flavusisolates produced aflatoxinsin liquid fermentation (limit of detection 5 ng g 1). Thirty-two percent of theA. flavusisolates produced>1mgg 1total aflatoxins but noA. flavusisolate produced G aflatoxins. When the agroecological zoneswere compared, significantly (P<0.05) greater proportions of aflatoxigenicA. flavusisolates were foundin the Northern Guinea Savannah (61%) than in Southern Guinea Savannah (31%). The Derived Savannahwas intermediate between the other two agroecological zones. Each of the regions had atoxigenic strainsof potential value as biological control agents. All SBGandA. parasiticusisolates produced both B andG aflatoxins and greater than 300mgg 1total aflatoxins. SBGandA. parasiticusisolates were the greatestcontributors to the aflatoxin-producing potential of fungal communities in regions where these isolatesoccurred.
dc.description.sponsorshipFederal Ministry for Economic Cooperation and Development, Germany
dc.format.extent37-44
dc.language.isoen
dc.subjectAflatoxins
dc.subjectAspergillus Section
dc.subjectFlavi
dc.subjectSbg
dc.subjectAtoxigenic
dc.subjectGroecological Zones
dc.subjectA. Parasiticus
dc.titleDistribution of Aspergillus section Flavi in soils of maize fields in three agroecological zones of Nigeria
dc.typeJournal Article
dc.description.versionPeer Review
cg.contributor.affiliationUniversity of Bonn
cg.contributor.affiliationInternational Institute of Tropical Agriculture
cg.contributor.affiliationUniversity of Ibadan
cg.contributor.affiliationUniversity of Arizona
cg.coverage.regionAcp
cg.coverage.regionAfrica
cg.coverage.regionEurope
cg.coverage.regionWest Africa
cg.coverage.regionNorth America
cg.coverage.countryGermany
cg.coverage.countryNigeria
cg.coverage.countryUnited States
cg.isijournalISI Journal
cg.authorship.typesCGIAR and developing country institute
cg.iitasubjectAflatoxin
cg.iitasubjectAgronomy
cg.iitasubjectDisease Control
cg.iitasubjectFarm Management
cg.iitasubjectFarming Systems
cg.iitasubjectIntegrated Soil Fertility Management
cg.iitasubjectMaize
cg.iitasubjectSoil Information
cg.iitasubjectSoil Fertility
cg.journalSoil Biology and Biochemistry
cg.howpublishedFormally Published
cg.accessibilitystatusLimited Access
local.dspaceid93239
cg.identifier.doihttps://dx.doi.org/10.1016/j.soilbio.2008.09.013


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