Production of Defense Phenolics in Tomato Leaves of Different Age

• Published in: Molecules (Basel, Switzerland) Vol. 25; no. 21; p. 4952
• Main Authors: Dadáková, Kateřina, Heinrichová, Tereza, Lochman, Jan, Kašparovský, Tomáš
• Format: Journal Article
• Language: English
• Published: Switzerland MDPI AG 26.10.2020; MDPI
• Subjects: Acids; Age; Bacterial diseases; bacterial infection; Biosynthesis; Caffeic acid; defense compounds; Flowers & plants; Infections; leaf age; Leaves; Lycopersicon esculentum - metabolism; Metabolites; Oxidative stress; p-Hydroxybenzoic acid; Pathogens; Phenolic acids; phenolics; Phenols; Phenols - chemistry; Phenols - metabolism; plant age; Plant Leaves - metabolism; Principal components analysis; Pseudomonas syringae; Salicylic acid; Solanum lycopersicum; Time Factors; tomato; Tomatoes; defense compounds; plant age; leaf age; tomato; bacterial infection; phenolics
• ISSN: 1420-3049; 1420-3049
• DOI: 10.3390/molecules25214952

Phenolics play an essential role in the defense reaction of crop plants against pathogens. However, the intensity of their production induced by infection may differ during the life of a plant. Here, we identified age-related differences in phenolic biosynthesis in the pathosystem cv. Amateur and pv. tomato DC3000. We analyzed concentrations of total phenolics, phenolic profiles, and concentrations of selected phenolic acids. The influence of bacterial infection, together with leaf and plant age, was assessed. The changes in concentrations of caffeic acid, 4-hydroxybenzoic acid, and salicylic acid glucoside caused by infection were found to be influenced by age. In concrete, the increases in the concentrations of these metabolites were all evident only in young plants.