cytokinin

/suy'teuh kuy"nin/, n. Biochem.
any of a class of plant hormones, produced by the roots and traveling upward through the xylem, that promote tissue growth and budding and, on application, retard plant senescence. Cf. kinetin, zeatin.
[1960-65; CYTO- + -KININ]

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      any of a number of plant growth substances that are usually derived from adenine. Synthesized in roots, cytokinins move upward in the xylem (woody tissue) and pass into the leaves and fruits, where they are required for normal growth, for cell differentiation, and, in conjunction with auxin (another plant hormone), to promote cell division.

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Universalium. 2010.

Look at other dictionaries:

  • cytokinin — ☆ cytokinin [sīt΄ō kī′nin ] n. [ CYTO + KININ] any of a group of organic compounds which behave like hormones in plants, promoting cell division and cell differentiation into roots and shoots, inhibiting aging, etc …   English World dictionary

  • Cytokinin — The cytokinin zeatin is named after the genus of corn, Zea, in which it was discovered. Cytokinins (CK) are a class of plant growth substances (phytohormones) that promote cell division, or cytokinesis, in plant roots and shoots. They are… …   Wikipedia

  • Cytokinin — Cytokinine oder Zytokinine sind eine Gruppe von Pflanzenhormonen mit multipler Wirkung auf Wachstum und Entwicklung von Pflanzen. Als Phytohormone sind die Cytokinine ubiquitär (überall) in Pflanzen verbreitet, befinden sich aber auch in… …   Deutsch Wikipedia

  • cytokinin — noun Etymology: cyt + kinin Date: 1965 any of various plant growth substances (as kinetin) that are usually derivatives of adenine …   New Collegiate Dictionary

  • cytokinin(s) — Class of plant growth substances (plant hormones) active in promoting cell division. Also involved in cell growth and differentiation and in other physiological processes. Examples: kinetin, zeatin, benzyl adenine …   Dictionary of molecular biology

  • cytokinin — noun Any of a class of plant hormones involved in cell growth and division …   Wiktionary

  • Cytokinin — Cy|to|ki|nin [↑ cyto u. ↑ Kinin], das; s, e; Syn.: Phytokinin: im Sinne von Pflanzenhormonen wirkende Adenin Derivate, z. B. Kinetin u. Zeatin, die Pflanzen u. Fruchtwachstum fördern, Alterungsprozesse verzögern u. die Samenruhe unterbrechen …   Universal-Lexikon

  • cytokinin — cy·to·ki·nin .sīt ə kī nən n any of various plant growth substances that are usu. derivatives of adenine …   Medical dictionary

  • cytokinin — cy·to·kinin …   English syllables

  • cytokinin — cy•to•ki•nin [[t]ˌsaɪ təˈkaɪ nɪn[/t]] n. biochem. any of a class of plant hormones, produced by the roots and traveling upward through the xylem, that promote tissue growth and budding and, on application, retard plant senescence • Etymology:… …   From formal English to slang

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