Seasonal variation in mycoflora associated with asymptomatic maize grain from small-holder farms in two provinces of South Africa

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dc.date.accessioned2020-11-30T15:46:17Z
dc.date.available2020-11-30T15:46:17Z
dc.date.issued2020-11-27
dc.identifierdoi:10.17170/kobra-202011262275
dc.identifier.urihttp://hdl.handle.net/123456789/12048
dc.language.isoengeng
dc.rightsNamensnennung 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectfusarium spp.eng
dc.subjectgrain mycofloraeng
dc.subjectmaizeeng
dc.subjectseed qualityeng
dc.subjectsmallholder farmerseng
dc.subjectstenocarpella maydiseng
dc.subject.ddc630
dc.subject.swdFusariumger
dc.subject.swdMaisger
dc.subject.swdSaatgutqualitätger
dc.subject.swdKleinbauerger
dc.subject.swdPilzeger
dc.subject.swdSüdafrikager
dc.titleSeasonal variation in mycoflora associated with asymptomatic maize grain from small-holder farms in two provinces of South Africaeng
dc.typeAufsatz
dc.type.versionpublishedVersion
dcterms.abstractSeed quality plays an important role in the establishment of healthy crop stands. The aim of this study was to identify the mycoflora associated with maize grain collected over two growing seasons, one experiencing severe drought, from small-holder farms across KwaZulu-Natal (KZN) and the Eastern Cape (EC), two important provinces with maize producing small-holder farmers in South Africa. Asymptomatic maize ears were collected at harvest during two maize growing seasons from farms located in Hlanganani (KZN), Ntabamhlophe (KZN), KwaNxamalala (KZN), Bizana (EC) and Tabankulu (EC). Maize grain was subjected to seed health tests using the agar plate method. The percentage incidence of fungal species isolated from maize grain was determined with species identities confirmed by ITS sequencing. Nine fungal genera were identified with Fusarium species and Stenocarpella maydis the most prevalent. Fusarium verticillioides, Fusarium graminearum and S. maydis were isolated from all sites in both seasons. No fungal species exhibited a higher incidence in the drought season across all sites. F. graminearum and S. maydis had higher incidences in the wetter season at four and three sites, respectively. F. verticillioides had a greater incidence at the EC sites, particularly the coastal Bizana site. We conclude that local factors have a greater impact than the drought season on the population structure of ear-rot pathogens. The widespread presence of fungi that are potentially mycotoxin-producing in asymptomatic maize grain poses health risks to consumers and is worthy of further investigation.eng
dcterms.accessRightsopen access
dcterms.creatorAveling, Theresa Ann Sheila
dcterms.creatorRidder, Katrien de
dcterms.creatorOlivier, Nicholas A.
dcterms.creatorBerger, Dave K.
dcterms.source.identifierEISSN 2363-6033
dcterms.source.issueNo. 2
dcterms.source.journalJournal of Agriculture and Rural Development in the Tropics and Subtropics (JARTS)eng
dcterms.source.pageinfo265-275
dcterms.source.volumeVol. 121
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Vol 121, No 2 (2020)