Cytokinins
- Found in a variety of plants and have many functions.
- Synthesized in meristematic tissues in roots and transported to above ground organs.
- Regulate growth and development of tissue primarily by promoting cell division. (Involved in germination, shoot differentiation, leaf senescence and Interacts with other plant hormones for some functions)
Cytokinins Function
- Regulates apical dominance and lateral root initiation.
- Slows down senescence (plant aging) and chlorophyll degradation in aging leaves.
- Regulates growth of dicot seedlings in the dark (in combination with ethylene).
- Involved in development of sex organs and male sterility.
- Synthesized in meristematic tissues in roots and transported to above ground organs.
Cytokinins contain adenine
Two structure types:
- Isoprenoid (Isoprene structural units )
- Aromatic (contain aromatic Groups)
Cytokinins: Isoprenoid
Cytokinins: Aromatic
Cytokinins: Aromatic
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