Fig. 3.

Hypergravity does not displace amyloplasts in the zig-1 mutant. (A) Hypergravity (10 g) was applied either longitudinally or perpendicularly to 4-d-old dark grown WT and zig-1 seedlings. Amyloplast localization was imaged by bright-field. Amyloplasts in WT relocate to the gravity associated bottom of the cell within 1 min of hypergravity; however, amyloplast movement in zig-1 is much more restricted. Scale bar: 20 μm. (B) The velocity of amyloplast movement in Col-0 and zig-1 was analysed under the 10 g conditions. Data are shown as means and error bars represent standard error. Different letters denote significant differences among all four data (P<0.05, one-way ANOVA followed by the Tukey’s multiple comparison test). n=9–17 amyloplasts. (This figure is available in color at JXB online.)