CYTOKININS

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CYTOKININS

• Cell Division
• Stimulate
• Apical Dominance
• Inhibit
• Leaf Senescence
• Inhibit
• Nutrient Mobilization
• Stimulate
• Bud Dormancy
• Reverse
• Seed Germination
• Stimulate

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CYTOKININ HISTORY

• Haberlandt 1913
• Diffusable Factor
• Wound Response
• Philip White 1934
• Tissue Culture
• Shoots
• F.C. Stewart 1948
• Coconut Milk
• Folke Skoog Carlos Miller 1950s
• Salmon Sperm DNA
• Kinetin
• Lathum Guillfoyle 1974
• Zeatin

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Fig. 15-10, p. 244
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cyclin synthesized
amino acids
cyclin degraded
cyclin
26S Proteosome
cyclin
cyclin
dephosphorylation
C-PK
triggers mitosis or DNA synthesis
C-PK
C-PK
P
(inactive)
(active)
phosphorylation
C-PK
ATP? GTP?
Fig. 15-7, p. 241
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CK
CYCD3
CDC2
IAA
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