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 Fribourg

A role for β-sitosterol to stigmasterol conversion in plant–pathogen interactions

Griebel, Thomas ; Zeier, Jürgen

In: The Plant Journal, 2010, vol. 63, no. 2, p. 254–268

Upon inoculation with pathogenic microbes, plants induce an array of metabolic changes that potentially contribute to induced resistance or even enhance susceptibility. When analysing leaf lipid composition during the Arabidopsis thaliana–Pseudomonas syringae interaction, we found that accumulation of the phytosterol stigmasterol is a significant plant metabolic process that occurs upon...