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Iris A. M. A. Penninckx, Kristel Eggermont, Franky R. G. Terras, Bart P. H. J. Thomma, Genoveva W. De Samblanx, Antony Buchala, , John M. Manners, Willem F. Broekaert, Pathogen-Induced Systemic Activation of a Plant Defensin Gene in Arabidopsis Follows a Salicylic Acid-Independent Pathway, The Plant Cell, Vol. 8, No. 12 (Dec., 1996), pp. 2309-2323
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Penninckx et al. (1996) studied this question.
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