(A) Spindle length scaling with microtubule growth rate and cell volume.
Astral and spindle microtubules and a cell boundary are included in these
simulations. Images correspond to steady state spindles obtained after running
the simulations for 200 s. The input growth rate indicated at the bottom left of
each image. Scale bar, 5 μm.
(B) Simulated spindle length plotted over time at various microtubule
growth rates. Color-coding of the growth rate indicated at the top, from magenta
(0.39 μm/s) to red (0.17 μm/s).
(C) Simulated steady state (200 s) spindle length plotted over the
effective average spindle microtubule growth rate. Growth rate color-coded as in
(B). Experimental data in grey.
(D) Spindle length scaling with microtubule growth rate. Only spindle
microtubules are included in these simulations. Images correspond to a spindle
obtained with a microtubule growth rate of 0.31 μm/s at the beginning of
the simulation (0 s, top) and after running the simulation for 100 s (middle)
and 190 s (bottom). Scale bar, 5 μm.
(E) Simulated spindle length plotted over time at various effective
average spindle microtubule growth rates. Color-coding of growth rate indicated
at the top, from magenta (0.42 μm/s) to red (0.15 μm/s).
(F) Simulated steady state (200 s) spindle length plotted over spindle
microtubule growth rate. Growth rate color-coded as in (E). Experimental data in
grey.