Evaluation of different genotypes of nontoxigenicAspergillus flavusfor their ability to reduce aflatoxin contamination in peanuts
| Autor: | Bruce W. Horn, Joe W. Dorner |
|---|---|
| Rok vydání: | 2011 |
| Předmět: |
Aflatoxin
Veterinary medicine biology Inoculation business.industry technology industry and agriculture Biological pest control food and beverages Aspergillus flavus Fungus biology.organism_classification biological factors Conidium Biotechnology Cottonseed Insect Science heterocyclic compounds business Agronomy and Crop Science Carcinogen |
| Zdroj: | Biocontrol Science and Technology. 21:865-876 |
| ISSN: | 1360-0478 0958-3157 |
| DOI: | 10.1080/09583157.2011.559308 |
| Popis: | Aflatoxins produced by the fungus Aspergillus flavus are potent carcinogens and account for large monetary losses worldwide in peanuts, maize, and cottonseed. Biological control in which a nontoxigenic strain of A. flavus is applied to crops at high concentrations effectively reduces aflatoxins through competition with native aflatoxigenic populations. In this study, eight nontoxigenic strains of A. flavus belonging to different vegetative compatibility groups and differing in deletion patterns within the aflatoxin gene cluster were evaluated for their ability to reduce aflatoxin B1 when paired with eight aflatoxigenic strains on individual peanut seeds. Inoculation of wounded viable peanut seeds with conidia demonstrated that nontoxigenic strains differed in their ability to reduce aflatoxin B1. Reductions in aflatoxin B1 often exceeded expected reductions based on a 50:50 mixture of the two A. flavus strains, although one nontoxigenic strain significantly increased aflatoxin B1 when paired with an aflat... |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|