Fundamental, Ecological and Agricultural Aspects of Nitrogen Metabolism in Higher Plants: Proceedings of a Symposium Organized by the Department of Pl (Hardcover, 91)

'Section 1: Uptake and translocation of nitrogen.- 1.1 Regulation of the absorption and release of nitrate by plant cells; A review of current ideas and methodology.- 1.2 The influence of the form and concentration of inorganic nitrogen supplied on nitrogen uptake by Ankistrodesmus falcatus.- 1.3 Nitrate uptake and reduction in sugar-beet seedlings.- 1.4 Effects of root temperature on uptake of nitrate and ammonium ions by barley grown in flowing-solution culture.- 1.5 Nitrate-uptake characteristics of roots as affected by nitrate supply.- 1.6 A substrate cycling model for nitrate uptake by Pisum sativum seedlings: A key to sensitivity of response of net influx to substrate and effectors?.- 1.7 Nitrate and ammonium absorption by plants growing at a sufficient or insufficient level of phosphorus in nutrient solutions.- 1.8 Flow of N and activities of N-assimilating enzymes in roots of N-limited Pisum sativum.- 1.9 Patterns of N uptake, accumulation and assimilation in Lemna gibba when grown with exponentially increasing daily doses of N.- 1.10 Translocation and metabolism of nitrogen: whole plant aspects.- 1.11 Cycling of amino-nitrogen between shoots and roots in wheat seedlings.- 1.12 Nitrogen retranslocation in plants of maize, lupin and cocklebur.- 1.13 Alterations in enrichment of NO3? and reduced-N in xylem exudate during and after an extended plant exposure to 15NO3?.- 1.14 Amino acid loading by minor veins of Commelina benghalensis: An integration of structural and physiological aspects.- 1.15 Tobacco mutants of amino acid membrane transport: uptake of L-valine in leaf discs from the double mutant Valr-2 and its monogenic derivatives.- 1.16 Sink control of amino acid transport into developing seeds of Vicia faba and Pisum sativum.- 1.17 Amino acid efflux from seed coats and from cotyledons of developing and germinating pea seeds.- 1.18 Translocation of labelled nitrogen in oilseed rape.- Section 2: Biochemical aspects.- 2.1 Biochemical aspects of nitrogen metabolism in a whole plant context.- 2.2 An evaluation of the stoichiometry of in vivo nitrate assimilation in Zea mays.- 2.3 Influence of boron on nitrate reductase in roots of Zea mays.- 2.4 The influence of light and dark conditions on the reduction of nitrate in leaves and roots of maize 165.- 2.5 Root contribution to nitrate reduction in barley seedlings (Hordeum vulgare L.).- 2.6 Nitrogen metabolism in plastids of pea roots.- 2.7 Isoforms of glutamine synthetase in chickpea.- 2.8 Partitioning of reduced-nitrogen derived from exogenous nitrate in maize roots: Initial priority for protein synthesis.- 2.9 A cysteine- stimulated in vitro inactivation of barley leaf nitrate reductase.- 2.10 15N nuclear magnetic resonance spectroscopy: a powerful tool to study amino acid biosynthesis in higher plants.- 2.11 Separation of amino acids by high performance liquid chromatography.- 2.12 Glutathione, a tripeptide which may function as a temporary storage compound of excessive reduced sulphur in H2S fumigated spinach plants.- 2.13 The effect of sulfide in the ambient air on amino acid metabolism of spinach leaves.- 2.14 Nitrogen uptake, assimilation and transport in barley in the presence of atmospheric nitrogen dioxide.- 2.15 Effect of light quality on the alanine and aspartate aminotransferases in Wolffla arrhiza.- 2.16 Senescence and nitrogen metabolism in annual plants.- 2.17 Water relations of cowpea fruits during development.- 2.18 Turnover of peroxisomal proteins: Mechanistic aspects of catalase turnover in greening sunflower cotyledons.- 2.19 Influence of partial defoliation of green pepper on the senescence, growth, and nitrate reductase of the remaining leaf.- 2.20 Chloroplast lipid constituents from leaves of rape plants as affected by nitrogen.- Section 3: Interactions between C and N metabolism.- 3.1 Interactions between nitrogen and carbon metabolism in a whole pla