This journal provides immediate access to some articles. Volume 52(4); October 1973 Articles Gibberellic Acid and Ion Release from Barley Aleurone Tissue: Evidence for Hormone-dependent Ion Transport Capacity PMCID: PMC366492 Phytochrome Destruction: An Apparent Requirement for Protein Synthesis in the Induction of the Destruction Mechanism PMCID: PMC366493 Pyruvate Kinase, a Possible Regulatory Enzyme in Higher Plants PMCID: PMC366494 The Occurrence of Glycolate Dehydrogenase and Glycolate Oxidase in Green Plants: An Evolutionary Survey PMCID: PMC366495 Influence of Temperature on Sterol Biosynthesis in Triticum aestivum PMCID: PMC366496 Phytochrome Properties and the Molecular Environment PMCID: PMC366497 Mineral Nutrient Requirements of Cucumber Seedlings PMCID: PMC366498 Polyribosomes from Peas: II. Polyribosome Metabolism during Normal and Hormone-induced Growth PMCID: PMC366499 The Velocities of Ion Transport Into and Through the Xylem of Roots: Findings with a Two-Point Application Pulse-Chase Technique PMCID: PMC366500 Some Physiological Effects of Viviparous Genes vp1 and vp5 on Developing Maize Kernels PMCID: PMC366501 Phosphoenolpyruvate Carboxykinase in Plants Exhibiting Crassulacean Acid Metabolism PMCID: PMC366502 Regulation of Nitrate Uptake in Penicillium chrysogenum by Ammonium Ion PMCID: PMC366503 Chromatin-directed Ribonucleic Acid Synthesis: A Comparison of Chromatins Isolated from Healthy, Avirulent Agrobacterium tumefaciens Inoculated, and Crown-Gall Tumor Tissues of Vicia faba PMCID: PMC366504 Activation and Inhibition of Ribulose 1,5-Diphosphate Carboxylase by 6-Phosphogluconate PMCID: PMC366505 Initiation of Ripening in Bartlett Pear with an Antiauxin α(p-Chlorophenoxy)isobutyric Acid PMCID: PMC366506 Some Physiological Characteristics of the Ethylene-requiring Tomato Mutant Diageotropica PMCID: PMC366507 Occurrence of a Temperature-induced Phase Transition in Mitochondria Isolated from Apple Fruit PMCID: PMC366508 Journal Matter Original table of contents page | ||