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  1. No Access

    Article

    Polyamine Sparing May Be Involved in the Prolongation of Cell Division Due to Inhibition of Phenylpropanoid Synthesis in Cytokinin-Starved Soybean Cells

    Effects on growth, mostly of an inhibitory nature, have been attributed to phenolic compounds in vivo and in vitro. This suggests that l-α-aminooxy-β-phenylpropionic acid (l-AOPP), a competitive inhibitor of phe...

    J. C. Mader, D. E. Hanke in Journal of Plant Growth Regulation (1997)

  2. No Access

    Article

    Immunocytochemical study of cell cycle control by cytokinin in cultured soybean cells

    An immunocytochemical method was used to determine the proportion of cells in the DNA synthesis (S phase) of the mitotic cycle in suspension cultures of soybean (Glycine max (L.) Merr. cv. Acme) callus of cotyled...

    J. C. Mader, D. E. Hanke in Journal of Plant Growth Regulation (1996)

  3. No Access

    Article

    Occurrence of aromatic cytokinins in oil palm (Elaeis guineensis Jacq.)

    The natural occurrence of 6-benzylaminopurine, 6-(2-hydroxybenzylamino)purine (ortho-topolin), 6-(3-hydroxybenzylamino)purine (meta-topolin), their ribosides and 9-glucosides is reported using specific antibodies...

    L. H. Jones, H. Martinková, M. Strnad, D. E. Hanke in Journal of Plant Growth Regulation (1996)

  4. No Access

    Article

    An evaluation of the role of cytokinins in the development of abnormal inflorescences in oil palms (Elaeis guineensis Jacq.) regenerated from tissue culture

    Tissue cultures and regenerant plants from cell lines producing palms with normal and abnormal flowers were analyzed for cytokinin content and compared with zygotic embryos and seedlings. Immature inflorescenc...

    L. H. Jones, D. E. Hanke, C. J. Eeuwens in Journal of Plant Growth Regulation (1995)

  5. No Access

    Article

    Cytokiningehalte von Fichtennadeln (Picea abies [L.] Karst.) nach Inokulation mit zwei Stämmen des Mykorrhizapilzes Thelephora terrestris (Ehrh.) Fr.

    Zwei sich in ihrer Herkunft unterscheidende Stämme von Thelephora terrestris zeigten auffällige Unterschiede in den Mengen exsudierter Cytokinine. Die Zusammensetzung der Cytokinine blieb unverändert. Bei gemeins...

    Hojka Kraigher, M. Strnad, D. E. Hanke… in Forstwissenschaftliches Centralblatt verei… (1993)

  6. No Access

    Article

    The effects of abscisic acid on the maturation ofBrassica napus somatic embryos

    A comparison of embryos, cultured for increasing periods of time with and without abscisic acid (ABA), was undertaken to investigate, at the ultrastructural level, the influence of this growth regulator on the...

    E. Maquoi, D. E. Hanke, R. Deltour in Protoplasma (1993)

  7. No Access

    Chapter and Conference Paper

    Cytokinin Mode of Action — Problems and Perspectives

    Recent results have modified the expectation that responses to cytokinin, along with the other growth substances, would all turn out to be mediated via cytosolic Ca2+ by mechanisms closely resembling those propos...

    D. E. Hanke, H. Davies, M. Biffen, R. J. A. Connett… in Plant Growth Substances 1988 (1990)

  8. No Access

    Article

    Changes in the pattern of phospholipid synthesis during the induction by cytokinin of cell division in soybean suspension cultures

    A method is described for preparing fully viable, cytokinin-starved soybean (Glycine max (L.) Merr. cv. Acme) cells from a suspension-culture of callus tissue. The cells respond to kinetin treatment by re-initiat...

    R. J. A. Connett, D. E. Hanke in Planta (1987)

  9. No Access

    Article

    Breakdown of phosphatidylinositol in soybean callus

    We have investigated the breakdown of membrane-bound phosphatidylinositol (PI) in homogenates of soybean (Glycine max) callus. The breakdown of PI was stimulated by the detergent deoxycholate. At pH 7.0 and 1·gl-...

    R. J. A. Connett, D. E. Hanke in Planta (1986)

  10. No Access

    Article

    The control of bud dormancy in potato tubers

    Potato (Solanum tuberosum L.) tuber buds normally remain dormant through the growing season until several weeks after harvest. In the cultivar Majestic, this innate dormancy persisted for 9 to 12 weeks in storage...

    C. G. N. Turnbull, D. E. Hanke in Planta (1985)

  11. No Access

    Article

    The control of bud dormancy in potato tubers. Measurement of the seasonal pattern of changing concentrations of zeatin-cytokinins

    A radioimmunoassay, combined with high-performance liquid chromatography, has been used to analyse the zeatin-type cytokinins of potato (Solanum tuberosum L. cv. Majestic) tubers and tuber buds throughout growth ...

    C. G. N. Turnbull, D. E. Hanke in Planta (1985)

  12. No Access

    Article

    Polypeptide ligation occurs during post-translational modification of concanavalin A

    Lectins are proteins with multivalent carbohydrate-binding sites, which confer the ability to agglutinate. The seeds of legumes are particularly rich in lectins, for example, concanavalin A (Con A) comprises u...

    D. M. Carrington, A. Auffret, D. E. Hanke in Nature (1985)

  13. No Access

    Article

    Properties of the chloride-ATPase fromLimonium salt glands: Activation by, and binding to, specific sugars

    Attempts to separate membrane fractions enriched in Cl−-ATPase activity fromLimonium leaf microsomes were hampered because, it seemed, the microsomal membranes were aggregated in clumps. We found hemagglutination...

    B. S. Hill, D. E. Hanke in The Journal of Membrane Biology (1979)