title: Beyond plant defense: insights on the potential of salicylic and methylsalicylic acid to contain growth of the phytopathogen Botrytis cinerea.
abstract: Using Botrytis cinerea we confirmed in the present work several previous studies showing that salicylic acid, a main plant hormone, inhibits fungal growth in vitro. Such an inhibitory effect was also observed for the two salicylic acid derivatives, methylsalicylic and acetylsalicylic acid. In marked contrast, 5-sulfosalicylic acid was totally inactive. Comparative proteomics from treated vs. control mycelia showed that both the intracellular and extracellular proteomes were affected in the presence of salicylic acid or methylsalicylic acid. These data suggest several mechanisms that could potentially account for the observed fungal growth inhibition, notably pH regulation, metal homeostasis, mitochondrial respiration, ROS accumulation and cell wall remodeling. The present observations support a role played by the phytohormone SA and derivatives in directly containing the pathogen. Data are available via ProteomeXchange with identifier PXD002873.
authors.affiliation: Laboratoire Mixte UMR 5240, Plateforme de Protéomique, Centre National de la Recherche Scientifique Lyon, France.
authors.forename: Cindy
authors.initials: C
authors.lastname: Dieryckx
authors.affiliation: Laboratoire Mixte UMR 5240, Plateforme de Protéomique, Centre National de la Recherche Scientifique Lyon, France.
authors.forename: Vanessa
authors.initials: V
authors.lastname: Gaudin
authors.affiliation: Plateforme Protéome, Centre de Génomique Fonctionnelle, Université de Bordeaux Bordeaux, France.
authors.forename: Jean-William
authors.initials: JW
authors.lastname: Dupuy
authors.affiliation: Plateforme Protéome, Centre de Génomique Fonctionnelle, Université de Bordeaux Bordeaux, France.
authors.forename: Marc
authors.initials: M
authors.lastname: Bonneu
authors.affiliation: Laboratoire Mixte UMR 5240, Plateforme de Protéomique, Centre National de la Recherche Scientifique Lyon, France.
authors.forename: Vincent
authors.initials: V
authors.lastname: Girard
authors.affiliation: Laboratoire Mixte UMR 5240, Plateforme de Protéomique, Centre National de la Recherche Scientifique Lyon, France.
authors.forename: Dominique
authors.initials: D
authors.lastname: Job
keywords: Botrytis cinerea; fungal growth; proteomics; salicylic acid; secretomics