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dc.contributor.authorOrtega‐Beltran, A.
dc.contributor.authorCallicott, K.A.
dc.contributor.authorCotty, P.J.
dc.date.accessioned2022-08-19T11:59:40Z
dc.date.available2022-08-19T11:59:40Z
dc.date.issued2020-08
dc.identifier.citationOrtega‐Beltran, A., Callicott, K.A. & Cotty, P.J. (2020). Founder events influence structures of Aspergillus flavus populations. Environmental Microbiology, 22(8), 3522-3534.
dc.identifier.issn1462-2912
dc.identifier.urihttps://hdl.handle.net/20.500.12478/7667
dc.description.abstractIn warm regions, agricultural fields are occupied by complex Aspergillus flavus communities composed of isolates in many vegetative compatibility groups (VCGs) with varying abilities to produce highly toxic, carcinogenic aflatoxins. Aflatoxin contamination is reduced with biocontrol products that enable atoxigenic isolates from atoxigenic VCGs to dominate the population. Shifts in VCG frequencies similar to those caused by the introduction of biocontrol isolates were detected in Sonora, Mexico, where biocontrol is not currently practiced. The shifts were attributed to founder events. Although VCGs reproduce clonally, significant diversity exists within VCGs. Simple sequence repeat (SSR) fingerprinting revealed that increased frequencies of VCG YV150 involved a single haplotype. This is consistent with a founder event. Additionally, great diversity was detected among 82 YV150 isolates collected over 20 years across Mexico and the United States. Thirty‐six YV150 haplotypes were separated into two populations by Structure and SplitsTree analyses. Sixty‐five percent of isolates had MAT1‐1 and belonged to one population. The remaining had MAT1‐2 and belonged to the second population. SSR alleles varied within populations, but recombination between populations was not detected despite co‐occurrence at some locations. Results suggest that YV150 isolates with opposite mating‐type have either strongly restrained or lost sexual reproduction among themselves.
dc.description.sponsorshipUnited States Department of Agriculture
dc.format.extent3522-3534
dc.language.isoen
dc.subjectAspergillus Flavus
dc.subjectAflatoxins
dc.subjectMaize
dc.subjectBiological Control
dc.titleFounder events influence structures of Aspergillus flavus populations
dc.typeJournal Article
cg.contributor.crpAgriculture for Nutrition and Health
cg.contributor.affiliationUniversity of Arizona
cg.contributor.affiliationUnited States Department of Agriculture
cg.contributor.affiliationInternational Institute of Tropical Agriculture
cg.coverage.regionACP
cg.coverage.regionNorth America
cg.coverage.countryMexico
cg.coverage.hubHeadquarters and Western Africa Hub
cg.researchthemePlant Production and Health
cg.identifier.bibtexciteidORTEGABELTRAN:2020
cg.isijournalISI Journal
cg.authorship.typesCGIAR and advanced research institute
cg.iitasubjectAflatoxin
cg.iitasubjectAgronomy
cg.iitasubjectDisease Control
cg.iitasubjectFood Security
cg.iitasubjectMaize
cg.iitasubjectPlant Breeding
cg.iitasubjectPlant Diseases
cg.iitasubjectPlant Health
cg.iitasubjectPlant Production
cg.journalEnvironmental Microbiology
cg.notesPublished online: 09 June 2020
cg.accessibilitystatusOpen Access
cg.reviewstatusPeer Review
cg.usagerightslicenseCreative Commons Attribution 4.0 (CC BY 0.0)
cg.targetaudienceScientists
cg.identifier.doihttps://dx.doi.org/10.1111/1462-2920.15122
cg.iitaauthor.identifierAlejandro Ortega-Beltran: 0000-0003-3747-8094
cg.futureupdate.requiredNo
cg.identifier.issue8
cg.identifier.volume22


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