Fig. 5

Dense cytoplasm in the tips of growing root hairs. A–C, Tip-concentrated dense cytoplasm in WT root hairs following initiation of polar growth (A), active growth stage (B), and termination of growth (C). Rare cytoplasm in the tips of root hairs from prx102-1 (D and E) and prx102-4 (F and G) after initiation of polar growth (D and F) and at the active growth stage (E and G). The white bar indicates regions of dense cytoplasm. Bars = 10 µm. H, The thickness of dense cytoplasm in tip of root hairs of WT and prx102 plants. For measurement, a picture with thinnest cytoplasm was selected from ten photos taken at three-second intervals (n = 22 root hairs)