Interaction of Wild Strains of Aspergilla with Aspergillus parasiticus and Aflatoxin Production
Author Information
Author(s): Martins H. Marina, Almeida Inês, Marques Marta, Bernardo Fernando
Primary Institution: INRB,I.P.-Laboratório Nacional Investigação Veterinária
Hypothesis
The study aims to investigate the effect of biotic interactions between different wild strains of Aspergilla and a competent aflatoxin-producing strain on aflatoxin production.
Conclusion
The study found that interactions between wild Aspergilla strains and Aspergillus parasiticus significantly influence aflatoxin biosynthesis, showing both synergistic and antagonistic effects.
Supporting Evidence
- Synergistic effects were observed with A. flavipes (+70.4%), A. versicolor (+54.9%), and A. flavus 3 (+62.6%) on the 8th day of incubation.
- Antagonistic effects were noted with A. niger (−69.5%), A. fumigatus (−47.6%), and A. terreus (−47.6%) on the 12th day.
- The highest aflatoxin production was recorded at 68.0 mg/kg on the 12th day of incubation.
Takeaway
Different types of Aspergilla can either help or hurt the production of harmful substances called aflatoxins when they grow together.
Methodology
The study used an in vitro model with 14 wild Aspergilla strains and a reference strain, incubating cultures on humidified cracked corn to measure aflatoxin production.
Limitations
The study may not account for all ecological factors affecting aflatoxin production in natural settings.
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