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Figure 21.1 Tumor that formed on a tomato stem infected with the crown gall bacterium
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Ch. 21 In-Text Art, p. 623 Kinetin
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Ch. 21 In-Text Art, p. 624 trans-zeatin, cis-zeatin, benzyladenine, and thidiazuron
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Figure 21.2 Structures of other aminopurines that are active as cytokinins
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Figure 21.3 Witches’ broom on a fir tree
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Figure 21.4 Tumor induction by Agrobacterium tumefaciens
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Figure 21.5 Biosynthetic pathway for cytokinin biosynthesis
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Ch. 21 In-Text Art, p. 629 Level of active cytokinin in a particular cell
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Figure 21.6 Simple versus phosphorelay types of two-component signaling systems
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Figure 21.7 Phenotypes of Arabidopsis plants harboring mutations in the cytokinin receptors
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Figure 21.8 Comparison of the structures of the type-A and type-B ARRs
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Figure 21.9 Model of cytokinin signaling
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Figure 21.10 Tobacco plants overexpressing genes for cytokinin oxidase
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Figure 21.11 Cytokinin is required for normal growth of the shoot apical meristem
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Figure 21.12 Comparison of the rosettes of wild-type Arabidopsis and the mutant
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Figure 21.13 Cytokinin suppresses the growth of roots
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Figure 21.14 Cytokinin suppresses the size and cell division activity of roots
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Figure 21.15 CYCD3-expressing callus cells can divide in the absence of cytokinin
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Figure 21.16 Regulation of growth and organ formation in cultured tobacco callus
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Figure 21.17 Map of the T-DNA from an Agrobacterium Ti plasmid
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Figure 21.18 Interaction of auxin and cytokinin in the regulation of shoot branching
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Figure 21.19 Leaf senescence is retarded in a transgenic tobacco plant containing ipt
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Figure 21.20 Effect of cytokinin on the movement of an amino acid in cucumber seedlings
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Figure 21.21 Cytokinin influence on the development of wild-type Arabidopsis
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Figure 21.22 Leaf senescence is retarded in transgenic lettuce plants expressing ipt
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Figure 21.23 Cytokinin regulates grain yield in rice
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