Progress in Plant Growth Regulation

Genetics, chemistry, and biochemical physiology in the study of hormonal homeostasis.- Differential efficacy of gibberellins in flowering and vegetative shoot growth, including heterosis and inherently rapid growth.- Genetic approaches to hormone physiology Chairman: H. Kende.- The use of dominant mutations in the study of hormonal responses in plants.- Gibberellin mutants in Arabidopsis thaliana.- Probing hormone action in developing seeds by ABA-deficient and -insensitive mutants.- Photomorphogenetic mutants of higher plants.- Hormone perception and transduction Chairman: A. Trewavas.- Cytokinin signal transduction through Ca2+ in mosses.- Auxin binding proteins are located in the ER and in the plasma membrane: identification by photoaffmity-labelling and characterization.- Touch-induced regulation of expression of the calmodulin-related TCH genes and thigmomorphogenesis in Arabidopsis.- The role of Ca2+ in the action of GA in the barley aleurone.- The role of Ca2+ and ABA in the regulation of stomatal aperture.- Hormones and gene expression Chairman: D.T.-H. Ho.- Hormonal control of gene expression.- Transcriptional regulation of auxin-responsive genes.- The Gibberellin response element: a DNA sequence in cereal ?-amylase gene promoters that mediates GA and ABA effects.- Control of hormone synthesis and metabolism Chairman: J.A.D. Zeevaart.- Environmental control of ethylene biosynthesis.- Abscisic acid biosynthesis in higher plants.- Changes in abscisic acid levels of heterotrophic cell suspension cultures caused by the plant growth retardant BAS W and possible physiological consequences.- Ontogenetic and environmental effects on GA1 levels and the implications for the control of internode length.- Indole-3-acetic acid is converted to indole-3-butyric acid by seedlings of Zea mays L.- Control of sensitivity to hormones Chairman: P.J. Davies.- Differential sensitivities of protoplast responses to auxin.- Somatic embryogenesis as a developmental system to study modulation of auxin-binding capacity.- Changing membrane sensitivity to auxin during plant development.- The genetics and physiology of gibberellin sensitivity mutants in peas.- Quantitative assessment of hormone sensitivity changes with reference to stomatal responses to abscisic acid.- Target or non-target: hormonal signal perception and response in the determination of cell performance.- Ethylene-induced increase of sensitivity to auxin in Ranunculus petioles and its implications regarding ethylene action on adaptation.- Sensitivity in a wider context: ethylene and petiole growth Nymphoides peltata.- Other endogenous plant growth regulating substances Chairman: G. Sembdner.- Polyamines a new class of growth substances.- Jasmonates: metabolism, biological activities, and modes of action in senescence and stress responses.- Tuber forming substances of Jerusalem artichoke (Helianthus tuberosus L.).- Zearalenone, a key substance controlling plant development.- Transport and metabolism of brassinosteroids in rice.- Evidence for different types of acetylcholine receptors in plants.- Growth inhibitors A-2? and A-2?, and red light-induced growth inhibition in dwarf pea.- Brassinolide-induced elongation.- Triacontanol and its second messenger 9-?-L(+) adenosine.- Developmental biology at the cellular level Chairman: R.S. Quatrano.- Intercellular communication during plant epidermal cell redifferentiation.- Secreted proteins as modulators of plant embryogenesis.- Localization of cytosolic Ca2+ during carrot somatic embryogenesis using confocal scanning laser microscopy.- Phytohormones and osmotic stress in the regulation of embryo-specific gene expression in Brassica napus microspore embryos.- Perturbations in leaf development caused by the dominant Knotted-mutation in maize.- Bolting and floral induction in annual and cold-requiring biennial Brassica spp.: effects of photoperiod and exogenous gibberellin.- Possible model for the determination of vascular tissue in roots of Pisum sativum.- Heterophylly in amphibious Ranunculi: the effects of abscisic acid and methyl jasmonate.- Organ interactions Chairman: F. Bangerth.- Hormonal and metabolic control of tuber formation.- Interaction between vegetative and reproductive organs during early fruit development in pea.- Growth regulators and fruit development in Satsuma mandarin.- Hormonal control of apical dominance. Studies in tobacco transformed with bacterial luciferase and Agrobacterium rol genes.- The possible role of cytokinins, ethylene and indolacetic acid in apical dominance.- The role of indole-3-acetic acid in mediating changes in stem elongation of etiolated Pisum seedlings following exposure to light.- The influence of auxin transport inhibitor placement on stress-induced flower abscission in Capsicum.- Regulation of apoplastic sugar supply in crown gall tumours.- A model for bipolar plant-type growth: role of auxin-cytokin countercurrent.- Stress Chairman: K. Raschke.- Stress-induced redistribution kinetics of ABA in leaves: model considerations.- Molecular, cellular, and plant mechanisms of ABA control of stomatal aperture size.- Is stomatal conductance of plants in drying soil controlled by abscisic acid in the xylem stream?.- Developmental regulation of an ABA- and stress-induced protein in barley.- Plant-pathogen interactions Chairman: T. Boller.- Hormones in systemic acquired resistance: The role of salicylic acid.- Corynebacterium fascians: cytokinin production is positively correlated with virulence.- Phytoalexin elicitor-active ?-1, 4-D-oligogalacturonides reduce auxin perception by plant cells and tissues.- Nodule formation and hormone balance.- Ethylene antagonists increase nodulation on sym 5 pea mutants.- Pathways of gibberellin synthesis Chairman: N. Murofushi.- Regulation of gibberellin biosynthesis in maize seedlings.- The biosynthesis of ent-kaurene in germinating seeds and the function of 2oxoglutarate in gibberellin biosynthesis.- Useful probes to study the biosynthesis of gibberellins.- Identification of native gibberellin-O-glucosides in Zea mays L. and Hordeum vulgare L..- The mode of action of acylcyclohexanediones – a new type of growth retardant.- The effect of the growth retardant LAB 198 999 and its interaction with gibberellins A1, A3, and A20 in fruit growth of tall and dwarf peas.- Phytochrome modulation of gibberellin metabolism in cowpea epicotyls.- Characterization of the effect of seeds on gibberellin metabolism in pea pericarp.- Cytokinin metabolism Chairman: M. Laloue.- Zeatin metabolism in Phaseolus: enzymes and genes.- Control of cytokinin levels by inhibitors of metabolism, symbiosis and genetic manipulation.- Zeatin allylic phosphate: occurrence, formation and possible role.- Cytokinin-induced shoot elongation in Syringa vulgaris L. in vitro.- Effect of growth substances and mineral nutrients on cytokinin levels and senescence of tobacco (Nicotiana rustica) leaves.- Electrophysiology and calcium Chairman: H. Felle.- Effects of abscisic acid and abscisic acid analogues on intracellular calcium level and gene expression in barley aleurone protoplasts.- ABA and GA 3, regulate CA2+-buffering in the cytosol and endoplasmic reticulum of barley aleurone cells.- Cytoplasmic calcium, calcium currents and fluxes during fertilization and early development of Fucus serratus.- The role of cytosolic calcium, pH and auxin-induced electrical responses for elongation growth in maize.- Whole-cell patch-clamp experiments on tobacco protoplasts.- The plasma membrane Ca2+ pump: potential role in Ca2+ homeostasis.- Biochemical characterization of a dual reconstituted system responsive to fusicoccin.- Calmodulin gene expression and Ca2+/calmodulin-dependent protein kinase II in plants.- Phytohormones and calmodulin inhibitor in elongation growth of soybean hypocotyl segments.- Effect of day length on stomatal opening and their response to phytochrome.- Biotechnological approaches to plant breeding Chairman: H.A. van Onckelen.- Transgenic tobacco plants with heat-inducible IAA synthesis genes.- Transgenic plants and transgenic plant mosaics for the expression of pathogen derived genes able to affect phytohormone activity.- 1-Aminocyclopropane-l-carboxylate synthase genes: present and future.- Morphological characteristics and phytohormone content of ipt-transgenic tobacco.- Effect of auxin on thiophene synthesis and root morphology in Tagetes patula hairy root cultures.- Field testing transgenic cucumber plants that express the CMV coat protein gene.- A functional analysis of the plant hormone-regulated dual mannopine synthase (mas) promoter region.- Expression of luciferase in transgenic tobacco mediated by a promoterelement from desiccation tolerant Craterostigma plantagineum.- Genetic variation in ABA production in maize determines the extent of drought-induced gene transcription.- Agricultural uses of plant growth regulators Chairman: W. Rademacher.- Mode of action and use of plant growth retardants in reducing the effects of environmental stress on horticultural crops.- Plant growth retardants: their mode of action and benefit for physiological research.- Use of plant growth regulators in arable crops: survey and outlook.- The use of growth retardants for the regulation and acclimatization of in vitro plants.- Studies on the action of the new growth retardant CGA 163’935(Cimectacarb).- Ethylene, ACC, MACC and ethephon metabolism in ethephon treated field grown barley (Hordeum vulgare L. cv. ‘Bonanza’).- Enhancement of seedling vigor in rice (Oryza sativa L.) by seed treatment with gibberellic acid.- Physiology and application of phenylurea cytokinins.- The use of anti-gibberellins in the production of tulips as pot plants.- New developments in hormone analysis Chairman: G.W.M. Barendse.- Stable isotype techniques for the analysis of indole auxin metabolism in normal and mutant plants.- Preparation and application of antibodies for non-derivatized gibberellins.- Rapid ethylene release and stimulated ethylene production after de-submergence of plants: an analysis with a continuous flow system in line with a laser-driven intracavity photoacoustic ethylene detector.- An ELISA to determine exogenously applied gibberellic acid in leaves of cut Alstroemeria stems.- Liquid chromatography/atmospheric pressure chemical ionization mass spectrometry of gibberellin conjugates.- Immunocytochemical localization of auxins and cytokinins in the moss Funaria hygrometrica.- Tropisms Chairman: R.D. Firn.- On the role of the NPA receptor in the root gravitropic response mechanism.- The gravitropic tomato mutant lazy-2 is altered in signal transduction.- Genetic analysis of tropisms of Arabidopsis thaliana.- Molecular modelling of auxin transport inhibitors.- Index of Authors.- Index of Keywords.