Fig. 1. BL triggers cell wobbling photoresponse.

(A) Time series of the two-dimensional projection of the of cell’s aspect ratio R (defined as the ratio between the cross-sectional, r₁, and the transapical cell axis, r₂) for living (blue dots) and dead (black dots) P. delicatissima cells and its fit to a sinusoidal function (dashed red line). (B) Two-dimensional phase space reconstruction of the temporal dynamics of R in steady state (6000 s) for living cells in daylight conditions (the black line highlights the asymptotic limit cycle). (C) Temporal evolution of R for long time series experiments with living cells, where periods of light and darkness were alternated (white and gray bands, respectively). (D) Power spectral density of the temporal evolution of PC1 for spectrophotometry experiments at different wavelengths and fitted Lorentzian function peaking at (450 to 490 nm).