Morphogenesis and Embryogenesis
Lundi 11 mars 2013 14:00
- Duree : 1 heure
Lieu : Laboratoire Interdisciplinaire de Physique (ex LSP), Salle 216 Bât. E - 140 Avenue de la Physique Domaine Universitaire - St-Martin-d’Hères
Orateur : Martine BEN AMAR (Laboratoire de Physique Statistique, Ecole Normale Supérieure, Paris)
The beauty and complexity of living matter begins with the first steps of growth and with the formation of cell clusters and tissues. At the biological level, the processes are complex and often unknown, not measured and quantified , except perhaps in botanics. However quite general ideas can be given using a pragmatic approach based on symmetries following a “Landau” approach. Using the elasticity of soft tissues, eventually taking into account the existence of fibres, shapes can be explained by a variational treatment where incompressibility of tissues is treated via the existence of a stream function as in hydrodynamics. Despite the complexity of the formalism, especially in 3D, such an approach allows sometimes to answer to open questions, in the biology of development. It is the case for the embryogenesis of villi where the role of the mesenchyme versus the epithelium remains a matter of debate. As examples I will describe the green algae, the sympetalous flowers, the fingerprints and the villi formation.
Contact : sigolene.lecuyer@ujf-grenoble.fr
Discipline évènement : (Biologie / Chimie)
Entité organisatrice : (LIPhy)
Nature évènement : (Séminaire)
Evènement répétitif : (Séminaire Mat. Molle/grise)
Site de l'évènement : Domaine Universitaire de St Martin d’Hères
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