Chapter 36 - Regulation of Plant Growth - 36.3 - Other Plant Hormones Have Diverse Effects - 36.3 Recap - Learning Outcomes - Page 779: 3

Forming a positive feedback loop, ethylene regulates the ripening of fruit by signaling its own production. On a molecular level, receptors on the cell surface are activated by ethylene, forming a transduction chain that leads into the cell nucleus. Stimulated by cell division, cytokinin is responsible for regulating germination, axillary growth and senescence of leaves. Cytokinin signaling is the result of a two-component pathway including a kinase receptor and an effector in the form of a target protein.

Forming a positive feedback loop, ethylene regulates the ripening of fruit by signaling its own production. On a molecular level, receptors on the cell surface are activated by ethylene, forming a transduction chain that leads into the cell nucleus. Stimulated by cell division, cytokinin is responsible for regulating germination, axillary growth and senescence of leaves. Cytokinin signaling is the result of a two-component pathway including a kinase receptor and an effector in the form of a target protein.