Plant morphogenesis: motions, growth and mechanics
| When |
Dec 05, 2022
from 11:00 to 12:00 |
|---|---|
| Where | Salle Condorcet |
| Attendees |
Julien Derr |
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Although they were already observed as early as 400 years before common era by Androsthenos of Thasos, an admiral of Alexander the Great who reported about the ``sleep movements'' of the tamarind's leaflets and later popularized by Darwin, the active motions of plants was never quantitatively exploited. In this talk, I will try to convince you that plant motions are not only beautiful, they're also important phenomena to observe because they carry information about the very nature of plant growth.
The first part of the talk will be a general introduction to plant growth and morphogenetic motions, as well as some observations of the phenomena. In a second part, we will investigate in more detail the case of leaves development for simple or compound leaves. We will show how the rich morphogenetic motions are strongly related to posture regulation mechanisms and mechanosensitivity. Finally, we'll focus on the mechanics of developing plant by looking at force generation associated to motion in tendrils of climbing plants.