Mechanisms and management of Plant-Microorganism Interactions

The research carried out by the "Mechanisms and Management of Plant-Microorganism Interactions" (IPM) cluster is part of a global drive to reduce the use of synthetic inputs (fertilizers and pesticides) in agriculture through the development of alternative strategies, such as the management of interactions with beneficial microorganisms, crop protection based on plant immunity or plant biostimulation.

The objectives and approach are (i) to generate fundamental knowledge on plant-microorganism interactions, and (ii) to transfer this knowledge to the development of tools and methods needed to define innovative cropping systems.

The work and projects carried out within IPM, and in conjunction with the unit's other divisions, are organized around two main research themes:

1.  Elucidation of the mechanisms underlying the establishment and functioning of IPM, integrating the molecular, cellular, whole-plant and microbiome levels. 

• - Role of the plasma membrane (perception of microorganisms, trophic interface),
• - Protein homeostasis (UPR, ERAD, UPS),  
• - Role of nitric oxide in cell signaling,
• - Immunity at organ and phenological level,
• - Functioning of plant immunity in its biotic and abiotic environment..

2. Development of agroecological strategies for plant health and growth..

• - Characterization of the effectiveness of biocontrol methods (from the greenhouse to the field),
• - Development and validation of functional markers of beneficial interactions,
• - Evaluation of the unintended effects of biocontrol practices: development of bioindicators.

These research questions are carried out on different models and different types of plant-microorganism interactions (from mutualism to parasitism), enabling comparative analyses.

The results obtained should make it possible to identify and understand the obstacles and bottlenecks hindering the use of biocontrol and biostimulation innovations. 

The IPM cluster maintains links with numerous academic partners (in France and abroad), as well as with the private sector (R&D projects, CIFRE doctoral contracts, services, etc.).