Aflatoxin-producing fungi associated with pre-harvest maize contamination in Uganda

Simple item page
cg.authorship.typesCGIAR and developing country instituteen
cg.contributor.affiliationNational Agricultural Research Organisation, Ugandaen
cg.contributor.affiliationInternational Institute of Tropical Agricultureen
cg.contributor.affiliationUniversity of Nairobien
cg.contributor.crpAgriculture for Nutrition and Health
cg.contributor.crpMaize
cg.contributor.donorBill & Melinda Gates Foundationen
cg.contributor.donorUnited States Agency for International Developmenten
cg.coverage.countryUganda
cg.coverage.iso3166-alpha2UG
cg.coverage.regionAfrica
cg.coverage.regionEastern Africa
cg.creator.identifierAlejandro Ortega-Beltran: 0000-0003-3747-8094
cg.creator.identifierCharity Mutegi: 0000-0002-3188-0480
cg.creator.identifierRanajit Bandyopadhyay: 0000-0003-2422-4298
cg.howPublishedFormally Publisheden
cg.identifier.doihttps://doi.org/10.1016/j.ijfoodmicro.2019.108376en
cg.identifier.iitathemePLANT PRODUCTION & HEALTH
cg.isijournalISI Journalen
cg.issn0168-1605en
cg.journalInternational Journal of Food Microbiologyen
cg.reviewStatusPeer Reviewen
cg.subject.iitaAFLATOXINen
cg.subject.iitaAGRONOMYen
cg.subject.iitaFOOD SECURITYen
cg.subject.iitaMAIZEen
cg.subject.iitaPLANT BREEDINGen
cg.subject.iitaPLANT DISEASESen
cg.subject.iitaPLANT HEALTHen
cg.subject.iitaPLANT PRODUCTIONen
cg.volume313en
dc.contributor.authorSserumaga, J.P.en
dc.contributor.authorOrtega Beltran, A.en
dc.contributor.authorWagacha, J.M.en
dc.contributor.authorMutegi, C.K.en
dc.contributor.authorBandyopadhyay, Ranajiten
dc.date.accessioned2019-12-23T08:23:50Zen
dc.date.available2019-12-23T08:23:50Zen
dc.identifier.urihttps://hdl.handle.net/10568/106315
dc.titleAflatoxin-producing fungi associated with pre-harvest maize contamination in Ugandaen
dcterms.abstractMaize is an important staple crop for the majority of the population in Uganda. However, in tropical and subtropical climates, maize is frequently contaminated with aflatoxins, a group of cancer-causing and immuno-suppressive mycotoxins produced by Aspergillus section Flavi fungi. In Uganda, there is limited knowledge about the causal agents of aflatoxin contamination. The current study determined both the aflatoxin levels in pre-harvest maize across Uganda and the structures of communities of aflatoxin-producing fungi associated with the maize. A total of 256 pre-harvest maize samples were collected from 23 major maize-growing districts in eight agro-ecological zones (AEZ). Maize aflatoxin content ranged from 0 to 3,760 ng/g although only around 5% of the samples contained aflatoxin concentrations above tolerance thresholds. A total of 3,105 Aspergillus section Flavi isolates were recovered and these were dominated by the A. flavus L morphotype (89.4%). Densities of aflatoxin-producing fungi were negatively correlated with elevation. Farming systems and climatic conditions of the AEZ are thought to have influenced communities’ structure composition. Fungi from different AEZ varied significantly in aflatoxin-producing abilities and several atoxigenic genotypes were identified. The extremely high aflatoxin concentrations detected in some of the studied regions indicate that management strategies should be urgently designed for use at the pre-harvest stage. Atoxigenic genotypes detected across Uganda could serve as aflatoxin bio-control agents to reduce crop contamination from fields conditions and throughout the maize value chain.en
dcterms.accessRightsOpen Access
dcterms.audienceScientistsen
dcterms.available2019-10-31
dcterms.bibliographicCitationSserumaga, J.P., Ortega-Beltran, A., Wagacha, J.M., Mutegi, C.K. & Bandyopadhyay, R. (2020). Aflatoxin-producing fungi associated with pre-harvest maize contamination in Uganda. International Journal of Food Microbiology, 313, 1-36.en
dcterms.extent1-36en
dcterms.issued2020-01
dcterms.languageen
dcterms.licenseCC-BY-4.0
dcterms.publisherElsevieren
dcterms.subjectaspergillus flavusen
dcterms.subjectaflatoxinsen
dcterms.subjectagroecologyen
dcterms.subjectmaizeen
dcterms.subjectclimate changeen
dcterms.subjectfood safetyen
dcterms.subjectfood securityen
dcterms.typeJournal Article

Files

Original bundle

Now showing 1 - 1 of 1
Thumbnail Image
Name:
U19ArtSserumagaAflatoxinInthomDev.pdf
Size:
1.57 MB
Format:
Adobe Portable Document Format
Description:
Journal Article
Download

License bundle

Now showing 1 - 1 of 1
Thumbnail Image
Name:
license.txt
Size:
1.75 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

IITA Journal Articles
CRP A4NH outputs