In: Journal of Chemical Ecology, 2008, vol. 34, no. 12, p. 1523-1531
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In: Annals of Botany, 2007, vol. 99, no. 6, p. 1043-1054
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In: The Plant Cell, 2016, vol. 28, no. 4, p. 930–948
Plant growth and architecture is regulated by the polar distribution of the hormone auxin. Polarity and flexibility of this process is provided by constant cycling of auxin transporter vesicles along actin filaments, coordinated by a positive auxin-actin feedback loop. Both polar auxin transport and vesicle cycling are inhibited by synthetic auxin transport inhibitors, such as...
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In: The Plant Journal, 2010, vol. 61, no. 2, p. 200 - 210
The three closely related Arabidopsis basic leucine zipper (bZIP) transcription factors TGA2, TGA5 and TGA6 are required for the establishment of the salicylic acid (SA)-dependent plant defense response systemic acquired resistance, which is effective against biotrophic pathogens. Here we show that the same transcription factors are essential for the activation of jasmonic acid (JA)- and ethylene...
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Thèse de doctorat : Université de Fribourg, 2000 ; no 1324.
Au cours de l’évolution, les plantes ont développé des mécanismes de défense très variés afin de survivre aux attaques menées par les agents pathogènes. Généralement, un premier contact avec des agents pathogènes qui provoquent une nécrose suffit à induire une réaction de résistance dans les zones non infectées de la plante. La résistance systémique acquise (RSA) se...
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In: The Plant Journal, 2002, vol. 29(1), p. 11
In Arabidopsis, the rhizobacterial strain Pseudomonas fluorescens WCS417r triggers jasmonate (JA)- and ethylene (ET)-dependent induced systemic resistance (ISR) that is effective against different pathogens. Arabidopsis genotypes unable to express rhizobacteria-mediated ISR against the bacterial pathogen Pseudomonas syringae pv. tomato DC3000 (Pst DC3000)...
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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...
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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...
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Thèse de doctorat : Université de Fribourg, 2002 ; No 1370.
Afin de mieux comprendre l´interaction Phytophthora-plante, nous avons développé un nouveau pathosystème: Arabidopsis thaliana-Phytophthora porri. Jusqu´à présent, Phytophthora infestans, qui a causé famine et désolation en Irlande voilà 150 ans, a été le mieux étudié. Etudier le pathosystème Pomme de terre-Phytophthora infestans a, sans aucun doute, des avantages surtout parce que...
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In: The Plant Cell, 2005, vol. 17, p. 987-999
Plants treated with the nonprotein amino acid ß-aminobutyric acid (BABA) develop an enhanced capacity to resist biotic and abiotic stresses. This BABA-induced resistance (BABA-IR) is associated with an augmented capacity to express basal defense responses, a phenomenon known as priming. Based on the observation that high amounts of BABA induce sterility in Arabidopsis thaliana, a mutagenesis...
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