Figure 5.

Effects of background red-light illumination on blue-light-microbeam-induced chloroplast relocation. The schedules of light treatment are shown as bars at the top of the panels. The top bars are microbeam irradiation; the bottom bars are background illumination. The other details are the same as for Figure 2. a and c, Light-adapted prothallial cells kept in the dark for 30 min before light treatment continuously irradiated with a blue-light microbeam of 3 W m⁻² (mwB) or 10 W m⁻² (msB), and with background red-light illumination (bR; 30 W m⁻²) started 45 or 60 min after the onset of the blue-light microbeam. Tracks of chloroplast relocation are shown as the distance from the center of the blue-light microbeam. b and d, The sequence of blue-light microbeam and red-light background illumination was changed as shown in the bars at the top of the panels. Four tracks are shown for each treatment.