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Modification Of Fungal Community Structure To Improve Food Safety

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 adaptation 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.

Investigators
Mellon, Jay; Cotty, Peter
Institution
USDA - Agricultural Research Service
Start date
1995
End date
2001
Project number
6435-42000-014-00
Accession number
149257