Chez les plantes, l acide salicylique (SA) a un rôle central dans la réponse à de nombreuses contraintes environnementales et lors du développement. Cependant les événements de signalisation précoces qu il déclenche sont peu connus. Nous montrons, par marquage métabolique au 33Pi sur une suspension cellulaire d Arabidopsis thaliana, que le SA induit une diminution rapide et précoce d un pool de phosphatidylinositol (PI). Celle-ci est accompagnée d une accumulation de PI 4-phosphate et PI 4,5-bisphosphate. Ces changements sont inhibés par de la wortmannine à 30 M mais pas à 1 M, ce qui implique une activation de PI 4-kinase de type III. C est pourquoi une étude des effets de la wortmannine sur les modifications de transcriptome par le SA a é...
International audienceJasmonic acid (JA) biosynthesis and signaling are activated in Arabidopsis cul...
Eukaryotic cells are surrounded by membranes consisting of various lipids, including sterols, sphing...
Les phosphoinositides sont des lipides membranaires anioniques peu abondants .Leurs concentrations r...
Salicylic acid (SA) has a pivotal role in many plant stress and developmental responses but little i...
Par quel mécanisme les protéines de signalisation sont ciblées à un compartiment membranaire spécifi...
International audienceBackground and AimsWe have recently shown that an Arabidopsis thaliana double ...
International audiencePhosphoglycerolipids are essential structural constituents of membranes and so...
Living cells delimit themselves from their surroundings by a biological membrane. This biological me...
International audiencePhospholipids have recently been found to be integral elements of hormone sign...
Plants, as well as all other living organisms, have to react to environmental changes and are forced...
In response to environmental stresses, or during development, plant cells will produce lipids that w...
Phosphatidic acid (PA) and phytosphingosine-1-phosphate (phyto-S1P) have both been identified as lip...
Plants are in a perpetual evolutionary arms race with a wide range of pathogens. Their sessile natur...
Le phosphore est un élément indispensable à tous les organismes. Il participe aux mécanismes biologi...
Phosphatidic acid (PA) and phytosphingosine 1-phosphate (phyto-S1P) both are lipid messengers involv...
International audienceJasmonic acid (JA) biosynthesis and signaling are activated in Arabidopsis cul...
Eukaryotic cells are surrounded by membranes consisting of various lipids, including sterols, sphing...
Les phosphoinositides sont des lipides membranaires anioniques peu abondants .Leurs concentrations r...
Salicylic acid (SA) has a pivotal role in many plant stress and developmental responses but little i...
Par quel mécanisme les protéines de signalisation sont ciblées à un compartiment membranaire spécifi...
International audienceBackground and AimsWe have recently shown that an Arabidopsis thaliana double ...
International audiencePhosphoglycerolipids are essential structural constituents of membranes and so...
Living cells delimit themselves from their surroundings by a biological membrane. This biological me...
International audiencePhospholipids have recently been found to be integral elements of hormone sign...
Plants, as well as all other living organisms, have to react to environmental changes and are forced...
In response to environmental stresses, or during development, plant cells will produce lipids that w...
Phosphatidic acid (PA) and phytosphingosine-1-phosphate (phyto-S1P) have both been identified as lip...
Plants are in a perpetual evolutionary arms race with a wide range of pathogens. Their sessile natur...
Le phosphore est un élément indispensable à tous les organismes. Il participe aux mécanismes biologi...
Phosphatidic acid (PA) and phytosphingosine 1-phosphate (phyto-S1P) both are lipid messengers involv...
International audienceJasmonic acid (JA) biosynthesis and signaling are activated in Arabidopsis cul...
Eukaryotic cells are surrounded by membranes consisting of various lipids, including sterols, sphing...
Les phosphoinositides sont des lipides membranaires anioniques peu abondants .Leurs concentrations r...