Contents

AMORY, A. M. and C. F. CRESSWELL: Role of Formate in the Photorespiratory Metabolism of Themeda triandra Forssk. .................................................. 247

ARRILLAGA, I., M. C. BRISA, and J. SEGURA: Somatic Embryogenesis and Plant Regenera­tion from Hypocotyl Cultures of Digitalis obscura L. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 425

ASHlHARA, H. and T. UKAJI: Inorganic Phosphate Absorption and its Effect on the Adeno­sine 5' -triphosphate Level in Suspension Cultured Cells of Catharanthus roseus . . . . . . . . 77

BAPAT, V. A., M. MHATRE, and P. S. RAo: Regeneration of Plantlets from Protoplast Cul­tures of Pergularia pallida . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 413

BATHGATE, B., P. W. GOODENOUGH, and D. GRIERSON: Regulation of the Expression of the psb A Gene in Tomato Fruit Chloroplasts and Chromoplasts . . . . . . . . . . . . . . . . . . . . . .. 223

BHAT, S. R., B. V. FORD-LLOYD, and J. A. CALLOW: Isolation and Culture of Mesophyll Protoplasts of Garden, Fodder and Sugar Beets Using a Nurse Culture System: Callus Formation and Organogenesis........................... ..................... 419

Bovo, O. A. and L. A. MROGINSKI: Tissue Culture in Paspalum (Gramineae): Plant regen­eration from Cultured Inflorescences. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 481

BRONSTRUP, U. and W. HACHTEL: Protein Synthesis in Isolated Mitochondria from a Streptomycin-bleached Mutant of Euglena gracilis Klebs . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

CLAUSSEN, W., B. R. LOVEYS, and J. S. HAWKER: Influence of Sucrose and Hormones on the Activity of Sucrose Synthase and Invertase in Detached Leaves and Leaf Sections of Eggplants (Solanum melongena) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . .. 345

COSIO, E. G., R. A. NORTON, E. TOWERS, A. J. FINLAYSON, E. RODRIGUEZ, and G. H. N. TOWERS: Production of Antibiotic Thiarubrines by a Crown gall Tumor Line of Cha­enactis douglasii . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 155

DAHSE, I., H. FELLE, F.-W. BENTRUP, and B. LIEBERMANN: Tentoxin and Valinomycin Af­fect Electrophysiological Properties and K + (86Rb + )fluxes in the Liverwort Riccia flui­tans. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87

DIETTRICH, B., C. STEUP, D. NEUMANN, H. SCHEIBNER, C. REINBOTHE, and M. LUCKNER: Morphogenetic Capacity of Cell Strains Derived from Filament, Leaf and Root Ex­plants of Digitalis lanata . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 441

VAN DE DIJK, S. J. and H. A. VAN KEULEN: Differences between Tomato Genotypes (Lyco­persicon esculentum Mill.) in the Content of Carbohydrates under Low Light Intensity and Low Night Temperatures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 131

FORSYTH, C. and J. VAN STADEN: The Metabolism and Cell Division Activity of Adenine Derivatives in Soybean Callus. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 275

GRILLI, I., L. liOI, M_ C. ANGUILLESI, P. MELETTI, and C. FLORIS: Metabolism in Seed Rip­ening: Protein and poly(A) + RNA Pattern in developing embryos of Triticum durum .. 321

HASHIMOTO, T., Y. YUKIMUNE, and Y. YAMADA: Tropane Alkaloid Production in Hyoscya­mus Root Cultures ................... _ .................. :. . .. . . . . ... . . . .. . . . 61

HESLOP-HARRISON, J. S. and B. J. REGER: Chloride and Potassium Ions and Turgidity in the Grass Stigma . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

IV

HOFER, U., H. SCHNYDER, F. MXCHLER, and J. NOSBERGER: Light Response of Photosyn­thesis and of RuBP Carboxylase Oxygenase Activity in Young, Mature, and Senescing Leaves of Red Clover (Trifolium pratense L.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 137

HOFMAN, P. J., C. FORSYTH, and J. VAN STADEN: The Metabolism of Kinetin and Ben­zyladenine by Soybean Callus: Determination by Radioimmunoassay and Radioassay .. 289

JAUME, A. R., M. GOLENIOWSKI, and R. TIZIO: Interaction of CCC[(2-chloroethyl)tri­methylammonium chloride] with a Foliar Nutrient Solution on Sucrose Content in Leaves and Roots of Red Beet (Beta vulgaris L.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 171

JESCHKE, W. D., J. S. PATE, and C. A. ATKINS: Effects of NaCI Salinity on Growth, Devel­opment, Ion Transport and Ion Storage in White Lupin (Lupinus albus L. cv. Ultra) . . . .. 257

JHA, S. and S. SEN: Development of Indian Squill (Urginea indica Kunth.) through Somatic Embryogenesis from Long Term Culture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 431

JIA, S., Y. Fu, and Y. LIN: Embryogenesis and Plant Regeneration from Cotyledon Proto­plast Culture of Cucumber (Cucumis sativus L.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 393

JOHNSON-FLANAGAN, A. M., L. R. BARRAN, and J. SINGH: L-Methionine Transport During the Induction of Freezing Hardiness by Abscisic Acid in Brassica napus Cell Suspen­sion Cultures. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 309

JOSEPH, c.: The Cytokinins of Cichorium intybus L. Root: Identification and Changes During Vernalization.. .................................... .............. .... 235

KOTHARI, S. L. and N. CHANDRA: Adventitious Shoot Production from Stem Internode and Callus Cultures of Artemisia scoparia Waldst. et Kit. . . . . . . . . . . . . . . . . . . . . . . . . . .. 409

LOYOLA-VARGAS, V. M. and E. S. DE JIMENEZ: Regulation of Glutamine Synthetase/Glut­amate Synthase Cycle in Maize Tissue. Effect of the Nitrogen Source. . . . . . . . . . . . . . .. 147

MAHESWARAN, G. and E. G. WILLIAMS: Primary and Secondary Direct Somatic Embryo­genesis from Immature Zygotic Embryos of Brassica campestris . . . . . . . . . . . . . . . . . . . .. 455

MANETAS, Y., K. STAMATAKIS, and Y. SAMARAS: Mif+ -Regulation of C4 and CAM Adenyla­te Kinase .................................................................. 165

MARQUEZ, A. J., F. GALVAN, and J. M. VEGA: Utilization of Ammonium by Mutant and Wild Types of Chlamydomonas reinhardii. Studies of the Glutamate Synthase Activities 95

MAURINO, S. G., c. ECHEVARRIA,J. A. MEJIAS, M. A. VARGAS, andJ. M. MALDONADO: Pro­perties of the in vivo Nitrate Reductase Assay in Maize, Soybean, and Spinach Leaves. . . .. 123

MILBURN, J. A. and M. H. ZIMMERMANN: Sapflow in the Sugar Maple in the Leafless State. .. 331

MITSUNAGA, T., M. SHIMIZU, and A. IWASHIMA: Occurrence of Thiamine-binding Proteins in Plant Seeds. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 177

NADGAUDA, R. S. and A. F. MASCARENHAS: A Method for Screening High Curcumin-con­taining Turmeric (Curcuma longa L.) Cultivars in vitro. . . . . . . . . . . . . . . . . . . . . . . . . . .. 359

NOLAND, T. L. andJ. B. MURPHY: Protein Synthesis and Aminopeptidase Activity in Dor­mant Sugar Pine Seeds During Stratification and Warm Incubation ................. .

OERTLI,J.J.: The Effect of Cell Size on Cell Collapse under Negative Turgor Pressure. . . .. 365

PUA, E.-C. and T. A. THORPE: The Effect of Various Salts on Multiplication of Nicotiana tabacum L. Shoot Cultures of Different Na2S04 Tolerance. . . . . . . . . . . . . . . . . . . . . . . .. 465

RENGEL, Z. and S. JELASKA: Somatic Embryogenesis and Plant Regeneration from Seedling Tissues of Hordeum vulgare L. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 385

v

SALEEM, M. and A. J. CUTLER: Preparation and Characterization of Chemically and Osmo­tically Permeabilized Soybean [Glycine max. (L.) Merr.] Protoplasts . . . . . . . . . . . . . . . . . 11

SAUNDERS, J. W. and W. P. DOLEY: One Step Shoot Regeneration from Callus of Whole Plant Leaf Explants of Sugarbeet Lines and a Somaclonal Variant for in vitro Behavior 473

SAUTER, J. J. and T. AMBROSIUS: Changes in the Partitioning of Carbohydrates in the Wood during Bud Break in &tula pendula Roth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

SCHAFFER, A. A., K.-C. LIU, E. E. GOLDSCHMIDT, C. D. BOYER, and R. GOREN: Citrus Leaf Chlorosis Induced by Sink Removal: Starch, Nitrogen, and Chloroplast Ultrastructure 111

SCHEIBE, R., D. WAGENPFEIL, and J. FISCHER: NADP-malate Dehydrogenase Activity dur­ing Photosynthesis in Illuminated Spinach Chloroplasts. . . . . . . . . . . . . . . . . . . . . . . . . .. 103

VAN STADEN, J. and C. FORSYTH: The Metabolism of Adenine and Zeatin in Immature Car­yopses of Maize . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 299

TORRIGIANI, P., D. SERAFINI-FRACASSINI, S. BIONDI, and N. BAGNI: Evidence for the Subcel­lular Localization of Polyamines and their Biosynthetic Enzymes in Plant Cells. . . . . . . 23

VASIL, V. and 1. K. VASIL: Plant Regeneration from Friable Embryogenic Callus and Cell Suspension Cultures of Zea mays L. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 399

Reviews

FRENTZEN, M.: Biosynthesis and Desaturation of the Different Diacylglycerol Moieties in Higher Plants. . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 193

LIEDVOGEL, B.: Acetyl Coenzyme A and Isopentenylpyrophosphate as Lipid Precursors in Plant Cells - Biosynthesis and Compartmentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 211

Short Communications

FA~ER:' E., H. KONINGSHOFER, and R. KANDELER: Ethylene Production and Overcrowd­mg m Lemnaceae ........... ........................ ........................ 379

MUSZYNSKI, S. and G. H. SCHMID: Photorespiration in Cultivars of Peas and Soybeans. . . .. 187

SCRAGG, A. H., P. MORRIS, and E. J. ALLAN: The Effects of Plant Growth Regulators on Growth and Alkaloid Formation in Cinchona ledgeriana Callus Culture. . . . . . . . . . . . .. 371

WIESER, U., W. PANKOW, and A. WIEMKEN: The Adenylate Energy Charge ofVesicular-ar­buscular Mycorrhiza of Onions (Allium cepa L.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 181