Figure 3. SEM analysis of mutant leaf sectors affected in both trichome formation and general epidermal cell expansion. A) and B) Low and high magnifications of a bubbled cell sector. Rudimentary trichomes also are visible in the sector. Guard cells are not seen. C) A mutant sector containing distorted-like trichomes and abnormally shaped epidermal cells is present toward the bottom half of the figure. D) Higher magnification of a distorted-like trichome present in the mutant sector shown in C). E) Normal shaped leaf with sector containing abnormal trichomes and epidermal cells. F) High magnification of sector border. The mutant sector contains under-expanded pavement cells and lacks guard cells. G) Toward the edge of the sector shown in E) the trichomes are unbranched. The lower half of the surface of these trichomes is papillate in appearance whereas the top half is smooth. H) Only rudimentary trichomes are present in the middle of the sector shown in E). The bar in the lower left of each figure represents 100 µ.

---

Return to paper