Biocontrol of Aspergillus flavus using inoculated bioplastic granules has been proven to be effective under laboratory and field conditions. In the present study, the use of low-density pellets from recycled bioplastic as a biocontrol strain carrier was evaluated. Applying recycled bioplastic pellets inoculated with biocontrol A. flavus NRRL 30797 to two soils with different levels of indigenous A. flavus, resulted in a rapid 55% and 63% decrease in percent aflatoxigenicity in A. flavus isolates from low and high population soils, respectively. The decrease was significantly more rapid using lower-density recycled bioplastic pellets than using higher-density bioplastic granules, but aflatoxin production by indigenous soil A. flavus decreased to comparable levels in two months. A sprayable bioplastic formulation prepared from inoculated recycled bioplastic pellets was effective in delivering adherent biocontrol A. flavus to corn leaves, and in promoting a 4-fold increase in recovered non-toxigenic A. flavus DNA one week later.

Evaluation of recycled bioplastic pellets and a sprayable formulation for application of an Aspergillus flavus biocontrol strain

ACCINELLI, CESARE;VICARI, ALBERTO;
2015

Abstract

Biocontrol of Aspergillus flavus using inoculated bioplastic granules has been proven to be effective under laboratory and field conditions. In the present study, the use of low-density pellets from recycled bioplastic as a biocontrol strain carrier was evaluated. Applying recycled bioplastic pellets inoculated with biocontrol A. flavus NRRL 30797 to two soils with different levels of indigenous A. flavus, resulted in a rapid 55% and 63% decrease in percent aflatoxigenicity in A. flavus isolates from low and high population soils, respectively. The decrease was significantly more rapid using lower-density recycled bioplastic pellets than using higher-density bioplastic granules, but aflatoxin production by indigenous soil A. flavus decreased to comparable levels in two months. A sprayable bioplastic formulation prepared from inoculated recycled bioplastic pellets was effective in delivering adherent biocontrol A. flavus to corn leaves, and in promoting a 4-fold increase in recovered non-toxigenic A. flavus DNA one week later.
2015
Cesare Accinelli; Hamed K. Abbas; Alberto Vicari; W. Thomas Shier
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/440168
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