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Home page > Séminaires > Séminaires 2022 > MSC Seminar. September 26th 2022 at 11:30, Pauline Durand (MSC, Université Paris Cité) :"Plant cells under confinement : impact of geometrical cues on the cytoskeleton organization".

MSC Seminar. September 26th 2022 at 11:30, Pauline Durand (MSC, Université Paris Cité) :"Plant cells under confinement : impact of geometrical cues on the cytoskeleton organization"

Sauf mention contraire, les séminaires et les soutenances se déroulent à 11h30 en salle 454A du bâtiment Condorcet.


There will be a live diffusion with Zoom : please contact Michael Berhanu or Jean-Baptiste Manneville to attend the visio-seminar.

Plant cells under confinement : impact of geometrical cues on the cytoskeleton organization

Pauline Durand-Smet

Matière et Systèmes Complexes(MSC). Equipe Physique du vivant.

Université Paris Cité. CNRS UMR 7057

Abstract : Specific cell and tissue form is essential to support many biological functions of living organisms. During development, the creation of different shapes fundamentally requires the integration of genetic, biochemical and physical inputs.

In plants, it is well established that the cytoskeletal microtubule network plays a key role in the morphogenesis of the plant cell wall by guiding the organisation of new cell wall material. The cell cytoskeleton is thus a major determinant of plant cell shape. What is less clear is how cell geometry in turn influences the cytoskeletal organization.

To explore the relative contribution of geometry to the final organization of actin and microtubule cytoskeletons in single plant cells, we developed an experimental approach combining confinement of plant cells into micro-niches of controlled geometry with imaging of the cytoskeleton. A model of self-organizing microtubules in 3D predicts that severing of microtubules is an important parameter controlling the anisotropy of the microtubules network. We experimentally confirmed the model predictions by analysis of the response to shape change in plant cells with altered microtubule severing dynamics. This work is a first step towards assessing quantitatively how cell geometry controls cytoskeletal organization in plants.


Contact : Équipe séminaires / Seminar team - Published on / Publié le 14 septembre


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