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. 2014 Dec 15;111(52):18769–18774. doi: 10.1073/pnas.1421878112

Fig. 5.

Fig. 5.

Adaxial-abaxial polarity phenotypes associated with polar auxin transport defects. (A) A radialized trumpet-shaped leaf found in a pin1-1 plant. (B) Radialized trumpet-shaped and rod-shaped leaves found in a pid-7.1.2.6 rev-1 plant. Arrowheads indicate trumpet-shaped leaves, and arrows indicate rod-shaped leaves. Transverse section through the petiole regions of a wild-type leaf (C) and a trumpet-like leaf from pin1-1 (D) indicate abaxialization in pin1 mutants. Transverse section through a wild-type leaf (E) and a pin1-1 leaf of regular shape (F) showing the four mesophyll layers. (G) Conceptual model of the influence on polarity of polar auxin transport from the leaf axil to the SAM. p, phloem cells; x, xylem cells. (Scale bars: A and B, 500 μm; C–F, 100 μm.)