• Contact Us
    • Send Feedback
    • Login
    View Item 
    •   Home
    • Journal and Journal Articles
    • Journal and Journal Articles
    • View Item
    •   Home
    • Journal and Journal Articles
    • Journal and Journal Articles
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Browse

    Whole Repository
    CollectionsIssue DateRegionCountryHubAffiliationAuthorsTitlesSubject
    This Sub-collection
    Issue DateRegionCountryHubAffiliationAuthorsTitlesSubject

    My Account

    Login

    Welcome to the International Institute of Tropical Agriculture Research Repository

    What would you like to view today?

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

    Thumbnail
    View/Open
    donner-distribution-2009.pdf (424.8Kb)
    Date
    2009
    Author
    Donner, M.
    Atehnkeng, J.
    Sikora, R.A.
    Bandyopadhyay, Ranajit
    Cotty, P.J.
    Type
    Journal Article
    Metadata
    Show full item record
    Abstract/Description
    Fungal 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.
    https://dx.doi.org/10.1016/j.soilbio.2008.09.013
    Multi standard citation
    Permanent link to this item
    https://hdl.handle.net/20.500.12478/2488
    Digital Object Identifier (DOI)
    https://dx.doi.org/10.1016/j.soilbio.2008.09.013
    IITA Subjects
    Aflatoxin; Agronomy; Disease Control; Farm Management; Farming Systems; Integrated Soil Fertility Management; Maize; Soil Information; Soil Fertility
    Agrovoc Terms
    Aflatoxins; Aspergillus Section; Flavi; Sbg; Atoxigenic; Groecological Zones; A. Parasiticus
    Regions
    Acp; Africa; Europe; West Africa; North America
    Countries
    Germany; Nigeria; United States
    Journals
    Soil Biology and Biochemistry
    Collections
    • Journal and Journal Articles4835
    copyright © 2019  IITASpace. All rights reserved.
    IITA | Open Access Repository