Research Note: Glufosinate-Ammonium Reduces Growth and Aflatoxin B sub(1) Production by Aspergillus flavus

The herbicide glufosinate-ammonium (GA) [butanoic acid, 2-amino-4-(hydroxymethylphosphinyl)-ammonium salt] was tested at concentrations from 2 to 2,000 g GA per ml for activity against growth and aflatoxin B sub(1) (AFB sub(1)) production by the mycotoxigenic fungus Aspergillus flavus Link:Fr. The h...

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Bibliographic Details
Published in:Journal of food protection 2002-09, Vol.65 (9), p.1483-1487
Main Authors: Tubajika, K M, Damann, KE Jr
Format: Article
Language:English
Online Access:Get full text
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Summary:The herbicide glufosinate-ammonium (GA) [butanoic acid, 2-amino-4-(hydroxymethylphosphinyl)-ammonium salt] was tested at concentrations from 2 to 2,000 g GA per ml for activity against growth and aflatoxin B sub(1) (AFB sub(1)) production by the mycotoxigenic fungus Aspergillus flavus Link:Fr. The highest concentration (2,000 mu g GA per ml) reduced colony diameter of A. flavus strain AF13 by 80%. AFB sub(1) production was inhibited by 90% at this concentration. Reduction in mycelial dry weight and AFB sub(1) production in response to GA application ranged from 17.2 to 97.1% and from 39.1 to 90.1%, respectively. Of four concentrations tested, 2 mu g GA per ml was weakly inhibitory. In the kernel screening assay, AFB sub(1) production was inhibited 60 to 91% when kernels were preimmersed or immersed 5 days after incubation in 200 mu g GA per ml. Both concentrations (2 and 200 mu g GA per ml) reduced seed germination by 25 to 50%. Results indicate that GA has an inhibitory effect on growth and AFB sub(1) production by A. flavus.
ISSN:0362-028X