Syringic Acid, the 3,5-dimethyl ether derivative of gallic acid, is a phenolic compound found in fruits and vegetables which is synthesized via the shikimic acid pathway in plants. Syringic Acid has a broad bioprofile, having antioxidant, antimicrobial, anti-inflammatory, antiendotoxic, neuro- and hepatoprotective activities. It is an effective free radical scavenger and alleviates the oxidative stress markers. Syringic acid application in plants increases lignin deposition in interfascicular fibers and attenuates cesium-induced growth defects in Arabidopsis.