Inhibitory Effect of L-Methionine on Alternaria alternata Based on Metabolomics Analysis.

ABSTRACT: Alternaria alternata is the main pathogenic fungus of postharvest black spots in fruits and vegetables. This study aimed to explore the antifungal activity of methionine on A. alternata in vitro and to reveal related antifungal mechanisms through a metabolomics analysis. The results showed that the inhibitory effects of L-methionine (Met) treatment on mycelium growth, spore germination, and the germ tube elongation of A. alternata were enhanced with an increase in the Met concentration, but the inhibitory effects decreased when the Met concentration was higher than 50 mmolL^-1. The results of propidium iodide staining and scanning electron microscopy showed that the Met treatment damaged the plasma membrane integrity of the A. alternata spores and caus

SUBMITTER: Zhu X 

PROVIDER: S-EPMC10890048 | biostudies-literature | 2024 Feb

REPOSITORIES: biostudies-literature