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Link to original content: https://pubmed.ncbi.nlm.nih.gov/17810266
A central role of salicylic Acid in plant disease resistance - PubMed Skip to main page content
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. 1994 Nov 18;266(5188):1247-50.
doi: 10.1126/science.266.5188.1247.

A central role of salicylic Acid in plant disease resistance

T P Delaney, S Uknes, B Vernooij, L Friedrich, K Weymann, D Negrotto, T Gaffney, M Gut-Rella, H Kessmann, E Ward, J Ryals

A central role of salicylic Acid in plant disease resistance

T P Delaney et al. Science. .

Abstract

Transgenic tobacco and Arabidopsis thaliana expressing the bacterial enzyme salicylate hydroxylase cannot accumulate salicylic acid (SA). This defect not only makes the plants unable to induce systemic acquired resistance, but also leads to increased susceptibility to viral, fungal, and bacterial pathogens. The enhanced susceptibility extends even to host-pathogen combinations that would normally result in genetic resistance. Therefore, SA accumulation is essential for expression of multiple modes of plant disease resistance.

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