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Comparative Study
. 1999 May;65(5):2264-6.
doi: 10.1128/AEM.65.5.2264-2266.1999.

Divergence of West African and North American communities of Aspergillus section Flavi

P J Cotty  1 , K F Cardwell
Affiliations
Comparative Study

Divergence of West African and North American communities of Aspergillus section Flavi

P J Cotty et al. Appl Environ Microbiol. 1999 May.

Abstract

West African Aspergillus flavus S isolates differed from North American isolates. Both produced aflatoxin B1. However, 40 and 100% of West African isolates also produced aflatoxin G1 in NH4 medium and urea medium, respectively. No North American S strain isolate produced aflatoxin G1. This geographical and physiological divergence may influence aflatoxin management.

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Figures

FIG. 1
FIG. 1
Percentage of A. flavus S strain isolates producing various quantities of aflatoxin B1 in a chemically defined medium containing urea as the sole nitrogen source. Results of two tests are shown. Each test evaluated production by 20 West African and 20 North American isolates. Values are expressed in milligrams of aflatoxin B1 per 70-ml fermentation.
FIG. 2
FIG. 2
Percentage of A. flavus S strain isolates producing various quantities of aflatoxin G1 in a chemically defined medium containing urea as the sole nitrogen source. Each test evaluated production by 20 West African and 20 North American isolates. No North American isolate produced aflatoxin G1. Values are expressed in milligrams of aflatoxin G1 per 70-ml fermentation.
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References

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