Seminaires IDEEV  à 12 h les vendredis sauf exceptions

*Vendredi 20 mars 2026 12h 

Mariike Kuijjer, University of Helsinki, Finland

Gene regulatory networks govern how cells translate genomic information into complex phenotypes. Most network modeling approaches estimate condition-specific “aggregate” networks, masking regulatory heterogeneity across individuals and cell types. In this talk, I will present computational frameworks that integrate multi-omics data to progressively refine regulatory network inference, from condition-level models to individual-sample and cell-type–specific networks. Using examples ranging from tissue-specific regulation to cancer progression, I will illustrate how modeling regulatory rewiring reveals mechanisms underlying phenotypic diversity across biological contexts.< /span>

 

*Vendredi 27 mars 2026 12h 

Leander Anderegg, University of California Santa Barbara, USA

Abstract: Plant functional traits are powerful ecological tools, but the relationships between plant traits and climate (or environmental variables more broadly) are often remarkably weak. This presents a paradox: Plant traits govern plant interactions with their environment, but the environment does not strongly predict the traits of plants living there. Unpacking this paradox requires differentiating the mechanisms of trait variation and potential confounds of trait–environment relationships at different evolutionary and ecological scales ranging from within species to among communities. However, even after we sift through the problems of scale and sampling that plague many of our analyses, we find that trait-environment relationships often remain disappointing. This suggests that we may need to look critically at some of our underlying assumptions in plant functional ecology. In particular, I argue that we need a more integrated understanding of physiological and evolutionary equifinality among many traits and plant strategies, and a better grasp on how supposedly ‘functional’ traits integrate into a whole-organism phenotype in ways that may be largely orthogonal to environmental tolerances.

 

*Vendredi 3 avril 2026 12h 

 

*Vendredi 10 avril 2026 12h 

Diogo Verissimo, University of Oxford

 

*Vendredi 17 avril 2026 12h 

“L’évaluation des produits phytopharmaceutiques en France” : failles scientifiques et lacunes juridiques”

Dorian Guinard, maître de conférences en droit public, université de Grenoble Alpes, Co-président de l’association Biodiversité sous nos pieds, association membre du collectif Justice pour le vivant