Speaker: Claire Veneault-Fourrey
University of Lorraine, Tree-Microbe Interactions, Vandoeuvre les Nancy and Labex ARBRE, Tree-Microbe Interactions’ department, INRA-Nancy, Champenoux, France
Title: What do we learn on the biology of ectomycorrhiza by studying symbiotic effectors?
Host: Judith Felten
Room: KB.E3.01 (formerly KB3A9)
Ectomycorrhizae (ECM), symbiosis between tree roots and fungal hyphae, are essential for tree health. In exchange for carbohydrates, ECM fungi offer an improved mineral supply. Communication between plant and ECM fungus is essential for the initiation, establishment and maintenance of the symbiosis. In the ECM fungus Laccaria bicolor, the Mycorrhiza induced Small Secreted Protein of 7 kDa (MiSSP7) is a master switch controlling symbiosis development. Transcriptomic data revealed the presence of other MiSSPs with unknown functions and CAZyme (carbohydrate-active-enzymes) up-regulated during ectomycorrhiza development. I will present how the study of such proteins, using L. bicolor-Populus interaction as a model, can help us deciphering the molecular mechanisms driving the development of mycorrhizal symbioses (e.g. control of hormonal-signaling pathway and plant cell wall remodeling).
1. Unearthing the roots of ectomycorrhizal symbioses. F Martin, A Kohler, C Murat, C Veneault-Fourrey, DS Hibbett. Nature Reviews Microbiology.
2. Comparative Analysis of secretomes from ectomycorrhizal fungi with emphasis on small-secreted proteins. C. Pellegrin, E Morin, F Martin, C Veneault-Fourrey. Frontiers in Microbiology.10.3389/fmicb.2015.01278.
3. Genomic and transcriptomic analysis of Laccaria bicolor CAZome reveals insights into polysaccharides remodelling during symbiosis establishment. C Veneault-Fourrey, C Commun, A Kohler, E Morin, R Balestrini, J Plett et al.. Fungal Genetics and Biology.
4. Who is Controlling whom within the Ectomycorrhizal Symbiosis: Insights from Genomic and Functional Analyses. C Veneault?Fourrey, JM Plett, F Martin. Molecular Microbial Ecology of the Rhizosphere: Volume 1 & 2, 501-512.