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. 2005 Jan 27;24(4):657–662. doi: 10.1038/sj.emboj.7600561

Figure 2.

Figure 2

Examples of phenotypes caused by ectopic overexpression of cell cycle genes. (A, C, E, G, I, K) Wild-type plants and structures. (B, D) Plants constitutively overexpressing KRP2, a CDK inhibitor. Note the serrated leaves (B) composed of fewer, but much larger cells (D) (De Veylder et al, 2001; ©2001, American Society of Plant Biologists, reprinted with permission). (F, H) Overexpression of E2Fa leading to the formation of larger cotyledons (F, arrow), consisting of a larger number of cells with a smaller average size (H) (De Veylder et al, 2002). (J) Trichome-specific overexpression of CYCD3;1 causing the formation of multicellular hairs, whereas the wild-type hairs are unicellular (I) (Schnittger et al, 2002; © 2002, National Academy of Sciences, USA, reprinted with permission). (L) Constitutive overexpression of a dominant-negative CDKB1;1 interfering with the development of stomata. Whereas the wild-type stomata are built of two guard cells (K), the transgenic stomata often consist of only one kidney-shaped cell (L) (Boudolf et al, 2004a; © 2004, American Society of Plant Biologists, reprinted with permission).