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The Biosynthesis and Metabolism of Cytokinins

The Biosynthesis and Metabolism of Cytokinins Cytokinins, compounds first recognized by their ability to induce cell divi­ sion in certain plant tissue cultures, are now known to evoke a diversity of responses in plants. The view that root-produced cytokinins move in the xylem to the shoot where they participate in the control of both develop­ ment and senescence is now widely accepted. In addition to occurring in higher plants as free compounds, cytokinins also occur as component nuIThis review is dedicated to Professor P. F. Wareing on the occasion of his nominal retirement. 0066-4294/83/0601-0163$02.00 LETHAM & PALNI c1eosides in tRNA of plants, animals, and microorganisms. Recently cytoki­ nins have been reported to occur in plant viral RNA ( 1 72). Production of free cytokinins by microorganisms was demonstrated many years ago, and these cytokinins are of great significance in certain relationships between plants and microorganisms. Cytokinins cause marked elongation of cul­ tured fibroblasts and may mediate the regulatory role of mevalonate in DNA replication in mammalian cells (75). Hence, today, interest in cytoki­ nins and their metabolism extends far beyond the boundaries of develop­ mental botany. This review has been prepared at a most appropriate time. This marks the close of a 20-year period http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Annual Review of Plant Biology Annual Reviews

The Biosynthesis and Metabolism of Cytokinins

Annual Review of Plant Biology , Volume 34 (1) – Jun 1, 1983

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References (79)

Publisher
Annual Reviews
Copyright
Copyright 1983 Annual Reviews. All rights reserved
Subject
Review Articles
ISSN
1040-2519
DOI
10.1146/annurev.pp.34.060183.001115
Publisher site
See Article on Publisher Site

Abstract

Cytokinins, compounds first recognized by their ability to induce cell divi­ sion in certain plant tissue cultures, are now known to evoke a diversity of responses in plants. The view that root-produced cytokinins move in the xylem to the shoot where they participate in the control of both develop­ ment and senescence is now widely accepted. In addition to occurring in higher plants as free compounds, cytokinins also occur as component nuIThis review is dedicated to Professor P. F. Wareing on the occasion of his nominal retirement. 0066-4294/83/0601-0163$02.00 LETHAM & PALNI c1eosides in tRNA of plants, animals, and microorganisms. Recently cytoki­ nins have been reported to occur in plant viral RNA ( 1 72). Production of free cytokinins by microorganisms was demonstrated many years ago, and these cytokinins are of great significance in certain relationships between plants and microorganisms. Cytokinins cause marked elongation of cul­ tured fibroblasts and may mediate the regulatory role of mevalonate in DNA replication in mammalian cells (75). Hence, today, interest in cytoki­ nins and their metabolism extends far beyond the boundaries of develop­ mental botany. This review has been prepared at a most appropriate time. This marks the close of a 20-year period

Journal

Annual Review of Plant BiologyAnnual Reviews

Published: Jun 1, 1983

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