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. 1999 Feb;119(2):435–444. doi: 10.1104/pp.119.2.435

Figure 3.

Figure 3

TEM images from longitudinal sections of root tips of maize plants exposed for 0 (A and B) or 4 h (C–F) to control (0 μm Al) (A–D) or 20 μm Al (E and F) containing nutrient solution. A, C, and E, Glutaraldehyde-fixed samples. B, D, and F, PA-stained samples. Note the abundance of electron-translucent vacuoles with only some peripheric electron-dense deposits (C and E, arrows) in conventionally fixed samples and the abundance of electron-dense precipitates in the central part of vacuoles from PA-stained samples (B, D, and F). All scale bars represent 10 μm, except B, where bar is 1 μm.