Séminaire Café (Interne)

Il s’agit d’un exposé assez court (20 min) et assez informel.
Prière aux conférencier·ère·s de ne jamais dépasser 30 min et de vérifier la compatibilité avec le projecteur avant le séminaire.
Les séminaires ont lieu les jeudis après la réunion du laboratoire qui débute à 13h30 dans la bibliothèque du labo sur le campus Jussieu, Barre Cassan, Bât A, 1er étage.

Pour suggérer un titre et envoyer un abstract, contacter Chloé Dupuis (chloe.dupuis (arobase) espci.fr) ou Baptiste Lafoux (baptiste.lafoux (arobase) espci.fr).


Coffee seminars are supposed to be short and informal presentations (20 min).
Please never last longer than 30 min and check the compatibility of the projector with your computer before the seminar.
Location : Campus Jussieu, Barre Cassan, Bât A, 1er étage
7 quai Saint Bernard
75005 Paris

To suggest a title or send an abstract, please contact Chloé Dupuis (chloe.dupuis (arobase) espci.fr) or Baptiste Lafoux (baptiste.lafoux (arobase) espci.fr).

Prochains séminaires café
23 juin PhD students presentations
Peixin Zhang - Gatien Polly - Federigo Ceraudo
30 juin Feedback on the "Vie de labo" activity at CoDoc 2022
7 juillet PhD students presentations
Pierre-Ewen Lecoq - Yutong Cui - Gabriel Le Doudic
21 juillet PhD students presentations
Guillaume Sintes - Maïka Saint-Jean
Août Summer vacations
1er septembre On the mechanical origins of waving, coiling and skewing patterns in Arabidopsis thaliana roots
Amir Porat (PhD student at Tel-Aviv University)

We present novel simulations of the well-known waving, coiling and skewing patterns presented by roots of Arabidopsis thaliana when grown on stiff agar substrates that are tilted with respect to gravity.
By creating a novel numerical solver based on a quasi-static integration scheme and a Cosserat rod integrator, we are able to investigate in-silico how growing rod-like organs mechanically interact with their environment for the first time.
Our simulations confirm previous theories suggesting that waving and coiling result from the combination of active gravitropism and passive interactions between the root and the tilted plane, while skewing is related to an intrinsic twist profile (also known as cell file rotation). Besides successfully replicating many experimental observations, we develop analytic models relating skewing angles, and the transition between waving and coiling patterns, to the tilt angle of the substrate. Furthermore, we compare our simulation results to quantitative data from a number of published experimental papers and find a good agreement.

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Informations Pratiques

Laboratoire : 01 40 79 45 22
Directeur : Damien Vandembroucq
Codirecteur : Philippe Petitjeans
Administratrice : Frédérique Auger (01 40 79 45 22)
Gestionnaire : Claudette Barez (01 40 79 58 53)
Courriel : dir (arobase) pmmh.espci.fr