PONCHET , Michel

National audience

National audience

I World congress on the use of biostimulants in agriculture. I World Congress on the Use of Biostimulants in Agriculture

National audience

Stimuler les défenses des plantes pour qu'elles puissent se défendre : ce concept est élégant et désormais techniquement à portée de main. Les stimulateurs des défenses des plantes (SDP), trouvent en effet des applications concrètes en production même s'il reste du chemin pour élucider tous les mystères de ces éliciteurs. Ils doivent trouver...

International audience

Activité anti-oomycète des lipopolysaccharides (LPS)-binding proteins/bactericidal/permeability-increasing proteins

International audience

International audience

No description

International audience

International audience

Homeostasis between the cytoplasmic plant hormone salicylic acid (SA) and its' inactive,vacuolar storage forms, SA-2-O-β-D-glucoside (SAG) and SA-β-D-Glucose Ester (SGE), regulates thefine-tuning of defense responses to biotrophic pathogens in Arabidopsis thaliana. This protocoldescribes a simplified, optimized procedure to extract and quantify...

International audience

International audience

International audience

International audience

Plant lipid transfer proteins are small soluble extracellular proteins that are able to bind and transfer a variety of lipids in vitro. Recently, it has been proposed that lipid transfer proteins may play a key role in plant defence mechanisms, especially during the induction of systemic acquired resistance. However, very little is known about...

Background: Oomycetes are a group of filamentous microorganisms that includes both animal and plant pathogens and causes major agricultural losses. Phytophthora species can infect most crops and plants from natural ecosystems. Despite their tremendous economic and ecologic importance, few effective methods exist for limiting the damage caused...

Pathogenic oomycetes have evolved RXLR effectors to thwart plant defense mechanisms and invade host tissues. We analysed the function of one of these effectors (Penetration-Specific Effector 1 (PSE1)) whose transcript is transiently accumulated during penetration of host roots by the oomycete Phytophthora parasitica. Expression of PSE1 protein...

International audience

International audience

International audience

Vertebrate females transfer antibodies via the placenta, colostrum and milk or via the egg yolk to protect their immunologically immature offspring against pathogens. This evolutionarily important transfer of immunity is poorly documented in invertebrates and basic questions remain regarding the nature and extent of parental protection of...

International audience