By influencing the decline in proteins involved in photosynthetic metabolism.
Reference:
Regulation of leaf senescence by cytokinin, sugars, and light. Astrid Wingler, Antje von Schaewen, Richard C. Leegood, Peter J. Lea, and W. Paul Quick. Plant Physiol. (1998) 116: 329-335.
http://www.plantphysiol.org/cgi/content/full/116/1/329
Ethylene act as a hormone of senescence for plants.
The plant hormone that hastens the ripening of fruit and helps cause the fall of leaves, flowers, and fruit is ethylene. It is a gaseous hormone that triggers a series of biochemical changes, leading to fruit ripening and senescence.
External and internal stimuliregulating protein agents
Cytokinins are a type of plant hormones. They are produced by the roots and carried upward through the plant. One of their functions is to aid the plant in budding.
Senescence
cytokinins
Cytokinins By Sruthi R.D.
senescence.
Due to leaf senescence. In autumn the leaves stop being the sink for phloem transport so the nutrient supply dwindles so the leaves age and turn brown (since there are no nutrients to carry on producing more chlorophyll etc.). Senescence occurs due to reduced levels of cytokinin (plant "hormone") production.
A human's senescence often accompanies senility.
Ethylene act as a hormone of senescence for plants.
The plant hormone that hastens the ripening of fruit and helps cause the fall of leaves, flowers, and fruit is ethylene. It is a gaseous hormone that triggers a series of biochemical changes, leading to fruit ripening and senescence.
The cast of Senescence - 1990 includes: Isobel Smith
cytokinins
External and internal stimuliregulating protein agents
aging.
senescence