Experiments with the bacterial gene nahG established this substance's role 
Experiments with the bacterial gene nahG established this substance's role as a plant hormone, and NPR1 mediates the crosstalk between jasmonate, ethylene, and this substance. It plays a thermogenic role in lilies and is commonly used in medicine as a keratolytic agent. An esterified derivative of this substance can inhibit NFkB (N-F-kappa-B) and COX-2 and is considered an NSAID (N-said). This substance and its acetylated derivatives are contraindicted in children with viral diseases, who may develop Reyes syndrome. This substance can be prepared by hydrolyzing oil of wintergreen, and it is derived from ►the bark of the willow tree. FTP, name this acid which, when acetylated, produces aspirin. 
Experiments with the bacterial gene nahG established this substance's role as a plant hormone, and NPR1 mediates the crosstalk between jasmonate, ethylene, and this substance.
salicylic acid (accept salicylate or SA) 