Figure 2.

Micrographs of cortical microtubules in median-longitudinal sections showing the similar appearance of transverse, oblique, and longitudinal orientations in cells of the cortex of well-watered and water-stressed roots. A to D, Well-watered roots; E to H, water-stressed roots. Examples of transverse (A and E), oblique (B and F; right-handed helical), longitudinal (C and G) , and oblique (D and H; left-handed helical) microtubule orientations. Micrographs were obtained from peels, as described in Methods. Bar = 20 μm.