ATANASOVA-PENICHON, Vessela; BERNILLON, Stéphane; MARCHEGAY, Gisele; LORNAC, Aurélia; PINSON-GADAIS, Laetitia; PONTS, Nadia; ZEHRAOUI, Enric; BARREAU, Christian; RICHARD-FORGET, Florence

doi:10.1094/MPMI-04-14-0100-R

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ATANASOVA-PENICHON, Vessela
Unité de recherche Mycologie et Sécurité des Aliments [MycSA]

BERNILLON, Stéphane
Biologie du fruit et pathologie [BFP]
Institut National de la Recherche Agronomique [INRA]

MARCHEGAY, Gisele
Unité de recherche Mycologie et Sécurité des Aliments [MycSA]

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Article de revue

Ce document a été publié dans

Molecular Plant-Microbe Interactions. 2014, vol. 27, n° 10, p. 1148-1158

American Phytopathological Society

Résumé en anglais

Fusarium verticillioides infects maize ears, causing ear rot disease and contamination of grain with fumonisin mycotoxins. This contamination can be reduced by the presence of bioactive compounds in kernels that are able to inhibit fumonisin biosynthesis. To identify such compounds, we used kernels from a maize genotype with moderate susceptibility to F. verticillioides, harvested at the milk-dough stage (i.e., when fumonisin production initiates in planta), and applied a bioguided fractionation approach. Chlorogenic acid was the most abundant compound in the purified active fraction and its contribution to fumonisin inhibitory activity was up to 70%. Moreover, using a set of maize genotypes with different levels of susceptibility, chlorogenic acid was shown to be significantly higher in immature kernels of the moderately susceptible group. Altogether, our data indicate that chlorogenic acid may considerably contribute to either maize resistance to Fusarium ear rot, fumonisin accumulation, or both. We further investigated the mechanisms involved in the inhibition of fumonisin production by chlorogenic acid and one of its hydrolyzed products, caffeic acid, by following their metabolic fate in supplemented F. verticillioides broths. Our data indicate that F. verticillioides was able to biotransform these phenolic compounds and that the resulting products can contribute to their inhibitory activity.< Réduire

DOI

http://dx.doi.org/10.1094/MPMI-04-14-0100-R

Projet Européen

Pesticide Use-and-risk Reduction in European farming systems with Integrated Pest Management

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Importé de hal

Unités de recherche

Biologie du Fruit & Pathologie (BFP) - UMR 1332