Université de Fribourg

Protein phosphatase AP2C1 negatively regulates basal resistance and defense responses to Pseudomonas syringae

Shubchynskyy, Volodymyr ; Boniecka, Justyna ; Schweighofer, Alois ; Simulis, Justinas ; Kvederaviciute, Kotryna ; Stumpe, Michael ; Mauch, Felix ; Balazadeh, Salma ; Mueller-Roeber, Bernd ; Boutrot, Freddy ; Zipfel, Cyril ; Meskiene, Irute

In: Journal of Experimental Botany, 2017, p. -

Mitogen-activated protein kinases (MAPKs) mediate plant immune responses to pathogenic bacteria. However, less is known about the cell autonomous negative regulatory mechanism controlling basal plant immunity. We report the biological role of Arabidopsis thaliana MAPK phosphatase AP2C1 as a negative regulator of plant basal resistance and defense responses to Pseudomonas syringae. AP2C2, a...

Université de Neuchâtel

Expression Profile Matrix of Arabidopsis Transcription Factor Genes Suggests Their Putative Functions in Response to Environmental Stresses

Chen, Wenqiong ; Provart, Nicholas J. ; Glazebrook, Jane ; Katagiri, Fumiaki ; Chang, Hur-Song ; Eulgem, Thomas ; Mauch, Felix ; Luan, Sheng ; Zou, Guangzhou ; Whitham, Steve A. ; Budworth, Paul R. ; Tao, Yi ; Xie, Zhiyi ; Chen, Xi ; Lam, Steve ; Kreps, Joel A. ; Harper, Jeffery F. ; Si-Ammour, Azeddine ; Mauch-Mani, Brigitte ; Heinlein, Manfred ; Kobayashi, Kappei ; Hohn, Thomas ; Dangl, Jeffery L. ; Wang, Xun ; Zhu, Tong

In: The Plant Cell, 2002, vol. 14, no. 3, p. 559-574

Numerous studies have shown that transcription factors are important in regulating plant responses to environmental stress. However, specific functions for most of the genes encoding transcription factors are unclear. In this study, we used mRNA profiles generated from microarray experiments to deduce the functions of genes encoding known and putative Arabidopsis transcription factors. The mRNA...

Université de Neuchâtel

Priming: Getting Ready for Battle

Conrath, Uwe ; Beckers, Gerold J. M. ; Flors, Victor ; García-Agustín, Pilar ; Jakab, Gábor ; Mauch, Felix ; Newman, Mari-Anne ; Pieterse, Corné M. J. ; Poinssot, Benoit ; Pozo, María J. ; Pugin, Alain ; Schaffrath, Ulrich ; Ton, Jurriaan ; Wendehenne, David ; Zimmerli, Laurent ; Mauch-Mani, Brigitte

In: Molecular Plant-Microbe Interactions, 2006, vol. 19, no. 10, p. 1062-1071

Infection of plants by necrotizing pathogens or colonization of plant roots with certain beneficial microbes causes the induction of a unique physiological state called “ priming”. The primed state can also be induced by treatment of plants with various natural and synthetic compounds. Primed plants display either faster, stronger, or both activation of the various cellular defense responses...

Université de Fribourg

The PP2C-type phosphatase AP2C1, which negatively regulates MPK4 and MPK6, modulates innate immunity, jasmonic acid, and ethylene levels in Arabidopsis

Schweighofer, Alois ; Kazanaviciute, Vaiva ; Scheikl, Elisabeth ; Teige, Markus ; Doczi, Robert ; Hirt, Heribert ; Schwanninger, Manfred ; Kant, Merijn ; Schuurink, Robert ; Mauch, Felix ; Buchala, Antony ; Cardinale, Francesca ; Meskiene, Irute

In: The Plant Cell, 2007, vol. 19, no. 7, p. 2213-2224

Wound signaling pathways in plants are mediated by mitogen-activated protein kinases (MAPKs) and stress hormones, such as ethylene and jasmonates. In Arabidopsis thaliana, the transmission of wound signals by MAPKs has been the subject of detailed investigations; however, the involvement of specific phosphatases in wound signaling is not known. Here, we show that AP2C1, an...

Université de Fribourg

Priming: getting ready for battle

Conrath, Uwe ; Beckers, Gerold J. M. ; Flors, Victor ; García-Agustín, Pilar ; Jakab, Gábor ; Mauch, Felix ; Newman, Mari-Anne ; Pieterse, Corné M. J. ; Poinssot, Benoit ; Pozo, María J. ; Pugin, Alain ; Schaffrath, Ulrich ; Ton, Jurriaan ; Wendehenne, David ; Zimmerli, Laurent ; Mauch-Mani, Brigitte

In: Molecular Plant-Microbe Interactions, 2006, vol. 19, no. 10, p. 1062–1071

Infection of plants by necrotizing pathogens or colonization of plant roots with certain beneficial microbes causes the induction of a unique physiological state called “priming.” The primed state can also be induced by treatment of plants with various natural and synthetic compounds. Primed plants display either faster, stronger, or both activation of the various cellular defense responses...

Université de Neuchâtel

Characterization of an Arabidopsis–Phytophthora Pathosystem: resistance requires a functional PAD2 gene and is independent of salicylic acid, ethylene and jasmonic acid signalling

Roetschi, Alexandra ; Si-Ammour, Azeddine ; Belbahri, Lassaâd ; Mauch, Felix ; Mauch-Mani, Brigitte

In: The Plant Journal, 2001, vol. 28, no. 2, p. 293-305

Arabidopsis accessions were screened with isolates of Phytophthora porri originally isolated from other crucifer species. The described Arabidopsis–Phytophthora pathosystem shows the characteristics of a facultative biotrophic interaction similar to that seen in agronomically important diseases caused by Phytophthora species. In susceptible accessions, extensive...

Université de Neuchâtel

Manipulation of salicylate content in Arabidopsis thaliana by the expression of an engineered bacterial salicylate synthase

Mauch, Felix ; Mauch-Mani, Brigitte ; Gaille, Catherine ; Kull, Beatriz ; Haas, Dieter ; Reimmann, Cornelia

In: The Plant Journal, 2001, vol. 25, no. 1, p. 67-77

Salicylic acid (SA) plays a central role as a signalling molecule involved in plant defense against microbial attack. Genetic manipulation of SA biosynthesis may therefore help to generate plants that are more disease-resistant. By fusing the two bacterial genes pchA and pchB from Pseudomonas aeruginosa, which encode isochorismate synthase and isochorismate pyruvate-lyase,...