Salicylic Acid Is Not the Translocated Signal Responsible for Inducing Systemic Acquired Resistance but Is Required in Signal Transduction.
B Vernooij, L Friedrich, A Morse, R Reist, R Kolditz-Jawhar, E Ward, S Uknes, H Kessmann, and J Ryals
Plant Cell. 1994 July; 6(7): 959–965. PMCID: PMC160492