Université de Fribourg

NPR1 modulates cross-talk between salicylate- and jasmonate-dependent defense pathways through a novel function in the cytosol

Spoel, Steven H. ; Koornneef, Annemart ; Claessens, Susanne M. C. ; Korzelius, Jerôme P. ; Pelt, Johan A. van ; Mueller, Martin J. ; Buchala, Antony J. ; Métraux, Jean-Pierre ; Brown, Rebecca ; Kazan, Kemal ; Loon, L. C. van ; Dong, Xinnian ; Pieterse, Corné M. J.

In: The Plant Cell, 2003, vol. 15, p. 760

Plant defenses against pathogens and insects are regulated differentially by cross-communicating signal transduction pathways in which salicylic acid (SA) and jasmonic acid (JA) play key roles. In this study, we investigated the molecular mechanism of the antagonistic effect of SA on JA signaling. Arabidopsis plants unable to accumulate SA produced 25-fold higher levels of JA and showed enhanced...

Université de Fribourg

Rhizobacteria-mediated induced systemic resistance (ISR) in Arabidopsis requires sensitivity to jasmonate and ethylene but is not accompanied by an increase in their production

Pieterse, Corné M. J. ; Pelt, Johan A. van ; Ton, Jurriaan ; Parchmann, Stefanie ; Mueller, Martin J. ; Buchala, Antony J. ; Métraux, Jean-Pierre ; Loon, Leendert C. van

In: Physiological and Molecular Plant Pathology, 2000, vol. 57(3), p. 123

Plants develop an enhanced defensive capacity against a broad spectrum of plant pathogens after colonization of the roots by selected strains of nonpathogenic biocontrol bacteria. In Arabidopsis thaliana, this induced systemic resistance (ISR) functions independently of salicylic acid but requires an intact response to the plant hormones jasmonic acid (JA) and ethylene. To further...

Université de Fribourg

Signal signature and transcriptome changes of Arabidopsis during pathogen and insect attack

Vos, Martin de ; Oosten, Vivian R. van ; Poecke, Remco M. P. van ; Pelt, Johan A. van ; Pozo, Maria J. ; Mueller, Martin J. ; Buchala, Antony J. ; Métraux, Jean-Pierre ; Loon, L. C. van ; Dicke, Marcel ; Pieterse, Corné M. J.

In: Molecular Plant-Microbe Interactions, 2005, vol. 18, p. 923

Plant defenses against pathogens and insects are regulated differentially by cross-communicating signaling pathways in which salicylic acid (SA), jasmonic acid (JA), and ethylene (ET) play key roles. To understand how plants integrate pathogen- and insect-induced signals into specific defense responses, we monitored the dynamics of SA, JA, and ET signaling in Arabidopsis after attack by a...