Supplemental Data

Files in this Data Supplement:

• Supplemental Figure 1 - Treatment of wild-type Arabidopsis roots with taxol for 24 h results in the loss of overall, but not local, alignment of cellulose microfibrils. (A) Field emission scanning electron micrograph of a 5-day-old mor1-1 root tip after 24-h treatment with 10 µM taxol. The radially swollen root tip has been cryo-planed to expose the inner cell walls for examination. Bar = 100 μm. (B) to (D) Cellulose microfibril texture in three sites from a radially swollen cell in the root elongation zone. Though locally parallel, microfibrils have variable orientation. Bar = 300 nm.
• Supplemental Figure 2 - Cortical microtubule arrays in the mor1-1rsw1-1 double mutant become disordered to the same extent as those in the mor1-1 single mutant, whereas rsw1-1 and wild-type microtubule arrays remain intact. Seedlings were shifted to 29°C for 4 h prior to processing the root tips for anti-tubulin immunofluorescence. Bar = 20 μm. (A) wild-type (Col-0). (B) mor1-1. (C) rsw1-1. (D) mor1-1rsw1-1.