UBC Math Biology Seminar: Daniele Agostinelli

  • Date: 08/04/2021
  • Time: 14:05
Daniele Agostinelli, UBC - Mech. Eng.



Nutations in Growing Plant Shoots: Endogenous and Exogenous Factors in the Presence of Elastic Deformations [video]



Growing plant shoots exhibit circumnutations, namely, oscillations that draw three-dimensional trajectories, whose projections on the horizontal plane generate pendular, elliptical, or circular orbits. A large body of literature has followed the seminal work by Charles Darwin in 1880, but the nature of this phenomena is still uncertain and a long-lasting debate produced three main theories: the endogenous oscillator, the exogenous feedback oscillator, and the two-oscillator model. After briefly reviewing the three existing hypotheses, I will discuss a possible interpretation of these spontaneous oscillations as a
Hopf-like bifurcation in a growing morphoelastic rod.

Other Information: 

This event took place via zoom and a recording is available on mathtube.org.