Founder events influence structures of Aspergillus flavus populations

Simple item page
cg.authorship.typesCGIAR and advanced research instituteen
cg.contributor.affiliationUniversity of Arizonaen
cg.contributor.affiliationUnited States Department of Agricultureen
cg.contributor.affiliationInternational Institute of Tropical Agricultureen
cg.contributor.crpAgriculture for Nutrition and Health
cg.contributor.donorUnited States Department of Agricultureen
cg.coverage.countryMexico
cg.coverage.countryUnited States
cg.coverage.iso3166-alpha2MX
cg.coverage.iso3166-alpha2US
cg.coverage.regionACP
cg.coverage.regionNorthern America
cg.coverage.regionCentral America
cg.creator.identifierAlejandro Ortega-Beltran: 0000-0003-3747-8094
cg.howPublishedFormally Publisheden
cg.identifier.doihttps://doi.org/10.1111/1462-2920.15122en
cg.identifier.iitathemePLANT PRODUCTION & HEALTH
cg.isijournalISI Journalen
cg.issn1462-2912en
cg.issue8en
cg.journalEnvironmental Microbiologyen
cg.reviewStatusPeer Reviewen
cg.subject.iitaAFLATOXINen
cg.subject.iitaAGRONOMYen
cg.subject.iitaDISEASE CONTROLen
cg.subject.iitaFOOD SECURITYen
cg.subject.iitaMAIZEen
cg.subject.iitaPLANT DISEASESen
cg.subject.iitaPLANT HEALTHen
cg.subject.impactAreaNutrition, health and food security
cg.subject.sdgSDG 2 - Zero hungeren
cg.volume22en
dc.contributor.authorOrtega‐Beltran, A.en
dc.contributor.authorCallicott, K.A.en
dc.contributor.authorCotty, P.J.en
dc.date.accessioned2021-09-13T14:27:44Zen
dc.date.available2021-09-13T14:27:44Zen
dc.identifier.urihttps://hdl.handle.net/10568/114956
dc.titleFounder events influence structures of Aspergillus flavus populationsen
dcterms.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.en
dcterms.accessRightsOpen Access
dcterms.audienceScientistsen
dcterms.available2020-06-27
dcterms.bibliographicCitationOrtega‐Beltran, A., Callicott, K.A. & Cotty, P.J. (2020). Founder events influence structures of Aspergillus flavus populations. Environmental Microbiology, 22(8), 3522-3534.en
dcterms.extent3522-3534en
dcterms.issued2020-08
dcterms.languageen
dcterms.licenseCC-BY-4.0
dcterms.publisherWileyen
dcterms.subjectaspergillus flavusen
dcterms.subjectaflatoxinsen
dcterms.subjectmaizeen
dcterms.subjectbiological controlen
dcterms.typeJournal Article

Files

Original bundle

Now showing 1 - 1 of 1
Thumbnail Image
Name:
U20ArtOrtegabeltranFounderInthomNodev.pdf
Size:
676.77 KB
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