Schematic of the cell elongation dynamics (i). Cell circumferential elongation Q as a function of the actin nematic order parameter q (ii), showing a linear empirical correlation, colour coded for time (0 h, yellow; 7 h, orange; 24 h, red; 56 h, purple), with the experimental data as in Fig. 2d(iv) . Cell circumferential elongation Q as a function of time (iii), comparing the experimental data (dots) and model prediction (solid lines), for a constant pressure P 150 Pa (yellow, n = 8) and with a pressure increase P 650 Pa (red, n = 7 (7 h), n = 3 (24 h) and n = 2 (56 h)), with the experimental data as in Fig. 2c(iv),d(iv) . Blue line: model prediction for the case in which the cell elongation follows tissue deformation.
