This journal provides immediate access to some articles. Volume 52(6); December 1973 Articles Effects of Helminthosporium carbonum Toxin on Nitrate Uptake and Reduction by Corn Tissues PMCID: PMC366535 Effects of Helminthosporium carbonum Toxin on Absorption of Solutes by Corn Roots PMCID: PMC366536 Factors Affecting the Stability and Accuracy of the Bioassay for the Sperm Attractant Sirenin PMCID: PMC366537 The Chemotactic Activity of Various Sirenins and Analogues and the Uptake of Sirenin by the Sperm of Allomyces PMCID: PMC366538 A Mathematical Treatment of Munch's Pressure-Flow Hypothesis of Phloem Translocation PMCID: PMC366539 Drought Adaptation in Opuntia basilaris: Significance of Recycling Carbon through Crassulacean Acid Metabolism PMCID: PMC366540 Influence of Moisture, Heat, and Light Stress on Hydrogen Fluoride Fumigation Injury to Soybeans PMCID: PMC366541 Effect of Abscisic Acid on Uptake and Metabolism of [3H]Gibberellin A1 and [3H]Pseudogibberellin A1 by Barley Half-seeds PMCID: PMC366542 The Effects of Octanoate and Oleate on Isocitrate Lyase Activity during the Germination of Pinus pinea Seeds PMCID: PMC366543 Hormonally Induced Changes in the Stem and Petiole Anatomy and Cellulase Enzyme Patterns in Phaseolus vulgaris L. PMCID: PMC366545 Proline Uptake and Utilization by Chlorella pyrenoidosa PMCID: PMC366546 Temperature Effects on Radial Propagation of Water Potential in Cotton Stem Bark PMCID: PMC366547 Induction of Stomatal Closure by Helminthosporium maydis Pathotoxin PMCID: PMC366548 Structural Development during Germination of Different Populations of Mitochondria from Pea Cotyledons PMCID: PMC366549 Adenosine 5′-Triphosphate-Sulfurylase in Corn Roots and Its Partial Purification PMCID: PMC366550 Solute Distribution in Sugar Beet Leaves in Relation to Phloem Loading and Translocation PMCID: PMC366551 The Conversion of Photoinactive Protochlorophyllide633 to Phototransformable Protochlorophyllide650 in Etiolated Bean Leaves Treated with δ-Aminolevulinic Acid PMCID: PMC366552 Studies on the Energy-coupling Sites of Photophosphorylation: II. Treatment of Chloroplasts with NH2OH Plus Ethylenediaminetetraacetate to Inhibit Water Oxidation while Maintaining Energy-coupling Efficiencies PMCID: PMC366553 The Effect of an Oxygen-free Atmosphere on Net Photosynthesis and Transpiration of Barley (Hordeum vulgare L.) and Wheat (Triticum aestivum L.) Leaves PMCID: PMC366554 Polyribosome Formation and Protein Synthesis in Imbibed but Dormant Lettuce Seeds PMCID: PMC366555 Influence of Auxin and Incubation on the Relative Level of Polyribosomes in Excised Soybean Hypocotyl PMCID: PMC366556 Turnover of Galactosylglycerol and Osmotic Balance in Ochromonas PMCID: PMC366557 Regulation of Succinate Dehyrogenase in Higher Plants: I. Some General Characteristics of the Membrane-bound Enzyme PMCID: PMC366558 Regulation of Succinate Dehydrogenase in Higher Plants: II. Activation by Substrates, Reduced Coenzyme Q, Nucleotides, and Anions PMCID: PMC366559 The Formation, Isolation, and Biological Activity of a Cytokinin 7-Glucoside PMCID: PMC366560 Amino Acid Uptake by Pea Leaf Fragments: Specificity, Energy Sources, and Mechanism PMCID: PMC366561 Absorption of 2,4-Dichlorophenoxyacetic Acid and 3-(p-Chlorophenyl)-1, 1-dimethylurea (Monuron) by Barley Roots PMCID: PMC366562 The Conversion of d-Glucose-6-14C to Cell Wall Polysaccharide Material in Zea mays in Presence of High Endogenous Levels of Myoinositol PMCID: PMC366563 The Biosynthesis of (+)-Tartaric Acid in Pelargonium crispum PMCID: PMC366564 Polyribosomes from Peas: III. Stimulation of Polysome Degradation by Exogenous and Endogenous Calcium PMCID: PMC366565 T-2 Toxin Decreases Logarithmic Growth Rates of Tobacco Callus Tissues PMCID: PMC366566 Fusarium tricinctum T-2 Toxin Inhibits Auxin-promoted Elongation in Soybean Hypocotyl PMCID: PMC366567 Leaf Age and Ethylene-induced Abscission PMCID: PMC366568 Protein Breakdown and Formation of Protease in Attached and Detached Cotyledons of Phaseolus vulgaris L. PMCID: PMC366569 A Mechanism for the Indirect Transfer of Photosynthetically Reduced Nicotinamide Adenine Dinucleotide Phosphate from Chloroplasts to the Cytoplasm PMCID: PMC366570 Effects of Ammonium Nutrition on Water Stress, Water Uptake, and Root Pressure in Lycopersicon esculentum Mill PMCID: PMC366571 Site-specific Inhibition of Photophosphorylation in Isolated Spinach Chloroplasts by Mercuric Chloride PMCID: PMC366572 Calcium Distribution in the Abscission Zone of Bean Leaves: Electron Microprobe X-Ray Analysis PMCID: PMC366573 Short Term Increases in the Cold Tolerance of Red Osier Dogwood Stems Induced by Application of Cysteine PMCID: PMC366574 Translocation of Sucrose by Squash Plants PMCID: PMC366575 Journal Matter Original table of contents page Administrative content — journal masthead, notices, indexes, etc. | ||