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Modification of Fungal Community Structure to Improve Food Safety

Investigators
Cotty, Peter
Institutions
USDA - Agricultural Research Service
Start date
1995
End date
2000
Objective
Construct and develop criteria for selection and delivery of optimal Aspergillus flavus strains for competitive exclusion strategies that modify A. flavus populations in the field.
More information
Assess competitive differences among atoxigenic strains under field conditions and the effects of long term applications of atoxigenic strains on the A. flavus community structure. Identify factors that exert selective forces on A. flavus population structure and strain character. Define distribution of atoxigenic vegetative compatibility groups and assess their adaptaton to different cotton producing areas. Define the evolutionary relationship of atoxigenic strains to both toxigenic strains and to strains of Aspergillus oryzae in order to help determine how aflatoxin producing ability may be selected against. Establish mechanisms of atoxigenicity and variability among phenotypes in response to environmental modulators of aflatoxin production.
Funding Source
Agricultural Research Service
Project number
6435-42000-011-00D
Accession number
149257
Categories
Parasites
Natural Toxins
Viruses and Prions
Bacterial Pathogens
Chemical Contaminants
Mycotoxins