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Dr. Marzena Ciszak


Tuesday, May 14th, 2013 at 02:30:00 PM  

CNR (building F), room 1, via Madonna del Piano 10, Sesto Fiorentino

Published on-line at 01:09:04 PM on Thursday, May 9th, 2013

Plants as a complex system: signatures of swarming and synchronization dynamics

Sixth seminar in the series "Sguardi sulla complessità" on complexity by CSDC, ISC and Physics Dept. of CNR and Università di Firenze.

Interactions between individuals that are guided by simple rules may lead to the emergence of collective phenomena, referred to as swarming. While extensively studied in groups of animals, signatures of swarming phenomena have been recently observed also in plants (10.1371/journal.pone.0029759). In particular, the interactions between nearby roots induce the alignment of their growing directions. Such behaviour is the result of a kind of decision making, taken in the root apex, where spatiotemporal spiking activity has been measured (10.1073/pnas.0804640106).

We will also briefly present results concerning collective phenomena in green algae (Chlamydomonas reinhardtii) (10.1371/journal.pone.0038895), showing how their collective motion is affected by the population density. Finally, we discuss the emergence of coherent oscillatory motion in plants shoots, reminiscent of that observed in coupled nonlinear oscillators.