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Berlin 2018 – scientific programme

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DY: Fachverband Dynamik und Statistische Physik

DY 15: Nonlinear Dynamics, Synchronization, Chaos I

DY 15.2: Talk

Monday, March 12, 2018, 15:45–16:00, BH-N 128

Partial synchronisation in yeast cell populationsAndré Weber1, Werner Zuschratter1, and •Marcus J. B. Hauser21Leibniz-Institut für Neurobiologie Magdeburg, Germany — 2Institut für Biometrie und Medizinische Informatik, Otto-von-Guericke-Universität Magdeburg, Germany

The mechanism of the transition between synchronised and desynchronised behaviour of intact yeast cells of the strain Saccharomyces carlsbergenis was investigated. In cell colonies of intermediate cell density, all cells remain oscillatory, in addition, a partially synchronised and a desynchronised state are accessible for experimental studies. In the partially synchronised state, the mean oscillatory period is shorter than that of the cells in a desynchronised state. Thus, synhronisation occurs due to entrainment to cells that oscillate more rapidly. This is typical for synchronisations due to phase advancement. However, the cells do not synchronise completely, as the distribution of the oscillatory frequencies only narrows but does not collapse to a single frequency. The desynchronisation is characterised by a broadening of the distribution of oscillation frequencies of the cells. Chimera states, i.e., the coexistence of a synchronised and a desynchronised parts of the population, could not be observed.

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