Abstract
Depletion of in planta salicylic acid in transgenic salicylate hydroxylase (NahG)containing plants, has shown that this phenolic compound is essential for expression of several modes of plant disease resistance. These include i) the rapid defense response found in some cases of genetically determined resistance, ii) the manifestation of disease symptoms in cases where genetic resistance is not acting, and iii) the induced, broad spectrum resistance known as systemic acquired resistance. These results indicate a common salicylic acid-dependent mechanism involved in disease resistance. We are also conducting experiments aimed at genetically dissecting the pathways regulating disease resistance using Arabidopsis thaliana and several pathogen systems. Some of the results of these analyses have been mutants with constitutive expression of PR genes and disease resistance (cim mutants). Another mutant class forms HR-like lesions and are activated for pathways involved in SAR as if these plants perceive pathogens in their absence (Isd. mutants).
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© 1994 Springer Science+Business Media Dordrecht
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Delaney, T.P. et al. (1994). The Molecular Biology of Systemic Acquired Resistance. In: Daniels, M.J., Downie, J.A., Osbourn, A.E. (eds) Advances in Molecular Genetics of Plant-Microbe Interactions. Current Plant Science and Biotechnology in Agriculture, vol 21. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-0177-6_51
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DOI: https://doi.org/10.1007/978-94-011-0177-6_51
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