Seminars of the Focus Area Complex Systems

Prof. Dr. C. Beta, Prof. Dr. K. Dethloff, Prof. Dr. R. Engbert, Prof. Dr. M. Holschneider, Prof. Dr. W. Huisinga, Prof. Dr. Ralf Metzler, Prof. Dr. A. Pikovsky, Prof. Dr. S. Reich, Prof. Dr. M. Rosenblum, Prof. Dr. G. Rüdiger, Prof. Dr. T. Scheffer, Prof. Dr. F. Scherbaum, Prof. Dr. J. Selbig, Prof. Dr. F. Spahn

Seminar

Speaker: Zoran Nikoloski, MPI of Molecular Plant Physiology

Title: The dynamics of the plant cytoskeleton components relates to transport efficiency of the emerging network * Colloquium on Complex and Biological Systems

Time: Fri, July 12, 2013, 10:15am

Place: bldg 28, room 0.108

Abstract:
The plant cytoskeleton is a highly dynamical interconnected structure comprising actin filaments and microtubules. While the molecular mechanisms of cytoskeleton formation and maintenance have been characterized, little is known about the organizational principles that shape these processes on the whole-cell level. Here, we develop an imaging-based framework that allows representing, quantifying, and analyzing the cytoskeleton as a complex network. By applying our framework, we support and extend existing results about the effect of actin-disrupting drugs and the phenomenon of microtubule reorientation in dark-grown expanding plants exposed to light. We then demonstrate that exposure to light leaves the orientation of actin filaments unchanged while increasing the heterogeneity of the actin distribution, in agreement with a transition from cell growth to stagnation due to thicker actin bundles. We identify that the two networks of actin filaments and microtubules, respectively, display properties desirable for transport, such as short average path length and high robustness. These advantageous features of cytoskeleton networks are maintained over time and across different conditions. Interestingly, man-made transportation networks, such as the German highway system (i.e., autobahn), exhibit similar properties, suggesting a general law of organization of networks supporting largely different transport processes.

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Past NLD Seminars (1994-2007) & (2008 ...)

Students' seminar: Theoretical Physics, PIK, Modeling & TSA Berlin-Potsdam-Colloquia: PhysGesellschaft Berlin, TU Berlin, Pro Physik, AIP, AEI, MPI-KGF, GFZ, HMI, PIK, AWI, Max Planck Institute for the History of Science, Mathematik, DPG Disputationen, & Vorschau UP

Udo Schwarz, Zentrum für Dynamik komplexer Systeme,
Universität Potsdam, Campus Golm Karl-Liebknecht-Str. 24, 14476 Potsdam, building 28, room 2.107
Phone: (+49-331) 977-1658, Fax : (+49-331) 977-1045

Email: Udo.Schwarz AT uni-potsdam.de

DFG SFB 1294

DFG Sonderforschungsbereich 1294 Data assimilation

DFG SPP 1488

DFG Schwerpunktprogramm 1488 Planetmag


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