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Increased Cytokinin from Root System of Perilla frutescens and Flower and Fruit Development

Nature New Biology volume 246, pages 31–32 (1973)Cite this article

Abstract

Cytokinins have been extracted from a wide range of plant tissues1 but little is yet known of changes in the cytokinin content of intact plants during development. Readily measurable quantities of cytokinins have been detected in the xylem sap exuding from cut stems of several plant species2–6. It is probable that this cytokinin flux is important in maintaining the cytokinin status of the shoot. It is known that the concentration of cytokinin in xylem sap is influenced by external factors which affect root physiology7. Flooding or water stress8,9 both decrease the concentration of cytokinin in sap, but application of the growth retardant (2-chloroethyl) trimethylammonium chloride (CCC) increases the concentration10. The extent to which changes occur in the cytokinin activity of sap during normal plant development has, however, been little explored.

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Author notes

  1. J. E. BEEVER

    Present address: Department of Botany, University of Auckland, Private Bag, Auckland, New Zealand

Authors and Affiliations

  1. Department of Plant Sciences, University of Leeds, Leeds, LS2 9JT

    J. E. BEEVER & H. W. WOOLHOUSE

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  1. J. E. BEEVER
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  2. H. W. WOOLHOUSE
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BEEVER, J., WOOLHOUSE, H. Increased Cytokinin from Root System of Perilla frutescens and Flower and Fruit Development. Nature New Biology 246, 31–32 (1973). https://doi.org/10.1038/newbio246031a0

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