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24, chemin de Borde Rouge -Auzeville - CS52627 31326 Castanet Tolosan cedex - France

Last update: May 2021

Menu Logo Principal UB AgroSup CNRS


Plant-Microorganism Interactions



Director : Sylvain JEANDROZ


Phone Number : 03 80 69 30 41

image IPM

The research conducted in the Plant-Microorganism Interactions (PMI) department aims at decreasing the use of pesticides and fertilizers in the global context of a sustainable agriculture.

Three main approaches are developed:

  • the control of the soil inoculum potential and the soil suppressivness
  • the use of beneficial microorganisms, a
  • and the induction of plant defense reactions against microbial pathogens.

The PMI department is interested in elucidating the mechanisms underlying these three topics and in studying the conditions allowing their introduction into innovative cultural systems, in collaboration with the other departments of the UMR.

Scientific activities of the PMI department are organized around three main questions:

The mechanisms underlying establishment and functioning of plant-microorganism interactions (compatible, incompatible or mutualistic), particularly:

  • the molecular dialogue at the biotrophic interface between plants and mycorrhizal fungi
  • signaling events associated with the initiation of plant defense responses
  • characterization of molecular events leading to induced resistance

Thefunctional biodiversity and ecology of soil fungi, either mutualists or pathogens, especially:

  • identification of fungal gene markers of the functional mycorrhizal association
  • evolution of such genes in different agricultural systems
  • development strategies of pathogens and characterization of the soil inoculum potential

The possible use of new strategies to protect crops from pathogens, mainly:

  • definition of conditions allowing  of the resistance induction strategy in field
  • development of cultural practices optimizing the use of stimulators of plant defense, mycorrhizal fungi and disease suppression