Potential of Pediococcus pentosaceus (L006) Isolated from Maize Leaf To Suppress Fumonisin-Producing Fungal Growth

Author:

DALIE D. K. D.1,DESCHAMPS A. M.2,ATANASOVA-PENICHON V.1,RICHARD-FORGET F.1

Affiliation:

1. 1Unité MycSA, UPR 1264, INRA, 71 Avenue Edouard Bourleaux, BP 81, 33883 Villenave d'Ornon Cedex, France

2. 2UMR INRA 1219 Oenologie, ISVV, Université de Bordeaux, 210 Chemin de Leysotte, CS 50008, 33882 Villenave d'Ornon Cedex, France

Abstract

The present study was aimed at characterizing the ability of lactic acid bacteria isolated from maize to repress the growth of fumonisin-producing fungi. A total of 67 isolates were screened for their antifungal activity against Fusarium proliferatum and Fusarium verticillioides by using the overlay method. The most efficient antifungal isolate was identified as Pediococcus pentosaceus (L006), on the basis of physiological and biochemical characterization and 16S rRNA gene sequencing. Production of the antifungal metabolite by this isolate commenced at the end of the growth exponential phase (8 h) and reached a maximum level after a long period of incubation (120 h). The antifungal metabolites produced were shown to be heat stable, resistant to proteolytic enzyme treatments, and pH dependent. The exact chemical nature of these substances remains to be clarified.

Publisher

International Association for Food Protection

Subject

Microbiology,Food Science

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