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. 2013 Dec 4;8(12):e82442. doi: 10.1371/journal.pone.0082442

Figure 5. The effect of 4 h treatment with isoxaben (isx) on cortical microtubule orientation.

Figure 5

(a-c) Single CLSM sections through the meristematic zone of wild-type (a), pom2-4 (b) and than/+ (c) roots. Cortical microtubules are mainly transverse. (d) Maximum projection of protodermal cell CLSM sections at the meristematic and early transition zone of wild-type root. Loosely longitudinal microtubule orientation in meristematic cells (included in bracket) shifts to transverse in the transition zone cells (arrowheads). (e) Higher magnification of the wild-type elongation zone epidermal cells included in the dotted line frame in Figure S1. Cortical microtubules exhibit various orientations. (f, g) Transition and early elongation zone of pom2-4 (e) and than/+ (f) roots at maximum projections of protodermal/epidermal cell CLSM sections. Cortical microtubules are randomly oriented. Scale bar, 20 μm.