ArticleApplied and environmental microbiology2013
Nutrient environments influence competition among Aspergillus flavus genotypes.
Article in Applied and environmental microbiology, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.
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Who cites it
12 citing papers in PubMed.
- Comparative genomics of aflatoxigenic A. flavus reveals mycotoxin diversity and postharvest adaptation in cashew nuts from coastal Kenya.Scientific reports · 2025Article
- Article
- Cumulative Effects of Non-AflatoxigenicToxins · 2022Article
- Impact of frequency of application on the long-term efficacy of the biocontrol product Aflasafe in reducing aflatoxin contamination in maize.Frontiers in microbiology · 2022Article
- Temperature Influences on Interactions Among Aflatoxigenic Species ofFrontiers in fungal biology · 2021Article
- Phenotypic Differentiation of Two Morphologically Similar Aflatoxin-Producing Fungi from West Africa.Toxins · 2020Article
- MonitoringFrontiers in microbiology · 2019Article
- Aflatoxin Contamination of Non-cultivated Fruits in Zambia.Frontiers in microbiology · 2019Article
- Dielectrophoresis for Biomedical Sciences Applications: A Review.Sensors (Basel, Switzerland) · 2017Review
- Degeneration of aflatoxin gene clusters in Aspergillus flavus from Africa and North America.AMB Express · 2016Article
- Environmental distribution and genetic diversity of vegetative compatibility groups determine biocontrol strategies to mitigate aflatoxin contamination of maize by Aspergillus flavus.Microbial biotechnology · 2016Article
- Co-inoculation of aflatoxigenic and non-aflatoxigenic strains of Aspergillus flavus to study fungal invasion, colonization, and competition in maize kernels.Frontiers in microbiology · 2014Article
Corrections and comments
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Authors and funding
2 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The population dynamics of Aspergillus flavus, shaped in part by intraspecific competition, influence the likelihood and severity of crop aflatoxin contamination. Competition for nutrients may be one factor modulating intraspecific interactions, but the influences of specific types and concentrations of nutrients on competition between genotypes of A. flavus have not been investigated. Competition between paired A. flavus isolates on agar media was affected by varying concentrations of carbon (sucrose or asparagine) and nitrogen (nitrate or asparagine). Cocultivated isolate percentages from conidia and agar-embedded mycelia were quantified by measurements of isolate-specific single-nucleotide polymorphisms with quantitative pyrosequencing. Compositions and concentrations of nutrients influenced conidiation resulting from cocultivation, but the percentages of total conidia from each competing isolate were not predicted by sporulation of isolates grown individually. Success during sporulation did not reflect the outcomes of competition during mycelial growth, and the extents to which isolate percentages from conidia and mycelia differed varied among both isolate pairs and media. Whether varying concentrations of sucrose, nitrate, or asparagine increased, decreased, or had no influence on competitive ability was isolate dependent. Different responses of A. flavus isolates to nutrient variability suggest genotypes are adapted to different nutrient environments that have the potential to influence A. flavus population structure and the epidemiology of aflatoxin contamination.
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