Fig. 4.

Effect of heat stress on the redistribution of ALBA‐family RNA‐binding protein ALBA4 (At1g76010) in pollen and its accumulation in large cytoplasmic granules 24 h after the heat stress (Náprstková et al., 2021). Arabidopsis plants cultivated at 22°C were heat‐stressed at 37°C for 3 h and then transferred back to their growth temperature. Mature pollen was collected 1 h and 24 h after the end of HS treatment and observed by bright field and fluorescent microscopy under control conditions (top row) and 1 h (middle row) and 24 h (bottom row) after the heat shock treatment (37°C for 3 h). Bars, 10 μm.