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The second edition of Biochemistry and Physiology of Plant Hormones has been substantially improved, not only has every chapter been revised and updated, but a new chapter on brassinosteriods has been added. This richly illustrated textbook is intended primarily for intermediate-level and advanced courses concerned with hormonal regulation of growth and development of seed plants including the hormonal regulation of flowering as well as the role of the phyhrome pigment system in the regulation of growth and development generally. There are frequent citations of the literature in the text and an even more extensive list of references at the end of each chapter, which will serve as an introduction to the voluminous historical and contemporary literature on each topic.
1 Introduction.- Fundamental Terms and Concepts.- Patterns and Kinetics of Growth in Cells, Tissues, Organs, and Whole Plants.- Discontinuities in Growth, Growth Periodicities, and Problems of Relative Growth Rate.- Mechanisms Controlling Cellular Differentiation.- to Plant Hormones.- References.- 2 Auxins.- Brief History of Discovery.- Went’s Avena Coleoptile Curvature Test.- Early Isolations of IAA.- Synthetic Auxins.- Controversy Surrounding the Use of Certain Chlorophenoxy Acids as Herbicides and Defoliants.- Natural Occurrence of Auxins.- Auxin Biosynthesis.- “Free” and “Bound” Auxin.- Destruction of IAA.- Auxin Transport.- Relationships between Auxin Content and Growth.- Correlative Differences in Auxin Relations between Etiolated and Light-Grown and Dwarf and Normal Plants.- Mechanism of Auxin Action.- References.- 3 Glbberellins.- Brief History of Discovery.- Chemical Characterization of GAs.- Natural Occurrence of GAs.- GA Biosynthesis in Seeds.- GA Biosynthesis in Systems Other Than Seeds.- Effects of Light on GA Biosynthesis.- Role of GAs in Dwarfism.- Other Aspects of GA Metabolism.- Quantitative Changes in GA Content during Development.- Sites of GA Biosynthesis in Seed Plants.- Transport of GA.- Anatomical and Biophysical Basis of GA-Induced Growth.- Mechanism of Action of GA.- References.- 4 Cytokinins.- History of Discovery.- Terminology.- Isolation of Kinetin and the Search for Other Naturally Occurring Cytokinins.- Discovery of Natural Cytokinins.- Effects of Cytokinins and Other Hormones in Organisms Other Than Seed Plants.- Structure/Activity Relationships of the Cytokinins.- Biosynthesis and Metabolism.- Auxin and Cytokinin Biosynthesis in Crown Gall Tumors.- Mechanisms of Origin in tRNA.- Metabolic Consequences of the Presence of Cytokinins in tRNA.- Hormonal Activity of Free Cytokinins.- Cytokinin Binding Protein.- Effects on Moss Protonemata.- Some Physiological Effects on Seed Plants.- Translocation.- References.- 5 Abscisic Acid and Related Compounds.- History of Discovery.- Chemical Characterization.- Biosynthesis and Other Features of Metabolism.- Natural Occurrence of ABA.- Physiological Effects.- State of Chromatin in Dormant Tissues and the Mechanism of Action of ABA.- References.- 6 Ethylene.- Historical Background.- Ethylene and Fruit Ripening.- Interaction between Auxin and Ethylene.- Ethylene and Apical Dominance.- Inhibition of Root Growth and Role in Root Gravitropism.- Role in Emergence of Dicot Seedlings.- Role in Abscission.- Effects of Ethylene on Planes of Cell Expansion.- Other Effects of Ethylene.- Ethylene Biosynthesis and Mechanism of Action.- Ethylene Receptor.- References.- 7 Brassinosteroids.- Brief History of Discovery.- Chemistry of BRs.- Natural Occurrence of BRs.- Biological Effects.- Effects on Nucleic Acid and Protein Metabolism.- Practical Applications in Agriculture.- Some Problems and Prospects.- References.- 8 Phyhrome.- History of Discovery and Modern Description.- Sequence Analysis of Phyhrome.- Occurrence, Distribution, and Intracellular Localization.- Induction-Reversion versus High Irradiance Responses.- Non-Phyhrome-Mediated Photoresponses to Blue Light.- to Mechanism of Phyhrome Action.- Phyhrome Action in Nonphotoperiodic Photoresponses.- Phyhrome and Photoperiodic (Flowering) Responses.- Calcium Messenger System in Plants.- References.