Cytokinins (CK) are a class of plant hormones that promote cell division, or cytokinesis, in plant roots and shoots. They are involved primarily in cell growth and differentiation, but also affect apical dominance, axillary bud growth, and leaf senescence.

cytokinin, any of a number of plant hormones that influence growth and the stimulation of cell division. Cytokinins are synthesized in the roots and are usually derived from adenine. They move upward in the xylem (woody tissue) and pass into the leaves and fruits, where they are required for normal growth and cell differentiation.

Cytokinins are structural components of transfer RNA (tRNA) present in organisms ranging from bacteria to man while these are not present in ribosomal RNA (rRNA).

Mar 27, 2002 · Cytokinins are N6 substituted adenine derivatives that affect many aspects of plant growth and development, including cell division, shoot initiation and growth, leaf senescence, apical dominance, sink/source relationships, nutrient uptake, phyllotaxis, and vascular, gametophyte, and embryonic development, as well as the response to biotic and a...

Jan 9, 2023 · Here, we will focus on cytokinins — a unique class of plant hormones — giving clues on their metabolism, on how they are perceived by cells and how cells change their activity in response to it. Most of the data presented have been derived by studies conducted on Arabidopsis thaliana, a plant used as a model system in plant science.

Natural cytokinins are derived from adenine and carry either a isoprene or aromatic side chain on their N6 terminal. Some of the common types of cytokinins are as follows: 1. Isoprenoid cytokinin: 2. Aromatic cytokinin: The major forms of cytokinins differ in different plant species.

Along with auxins, gibberellins, abscisic acid and ethylene, cytokinins belong to the group of classical plant hormones. Cytokinins were discovered by F. Skoog and co-workers in 1955 [1]. The hormone received its name because of the ability to …

Cytokinins are compounds with a structure close to adenine. They are usually linked to an isopentenyl side chain. Kinetin was the first artificial cytokinin to be discovered. It was isolated from herring sperm and named after its ability to promote cell division.

Cytokinins are a group of plant growth regulators which are primarily involved in performing cell division in plant roots, shoot system. This hormone helps in promoting the cell’s growth, development, differentiation, affecting apical dominance and delay in leaf senescence.

Cytokinins are plant hormones that can be naturally occurring or synthetically produced: Natural Cytokinins: Synthetic Cytokinins. Cell division: Kinins promote cell division, and the application of a cytokinin and auxin mix to undifferentiated cells initiates differentiation.