InhaltsangabeReview.- Stable Isotope in Plant Physiology and Ecology.- 1. Introduction.- 2. Abundance of Stable Isotopes.- 3. Units of Isotope Composition, Standards and Isotope Fractionation.- 4. Isotope Composition of Natural Isotopes.- a) 13C/12C Ratio.- ?) Basic Results.- ?) Carbon Isotope Fractionation in Plants Performing Different Types of Photosynthetic CO2 Fixation.- ?) Different Fractionation of Carbon Isotopes Due to Variable Environmental Conditions.- ?) ?13C Values in Trophic and Edaphic Chains.- b) 2H/lH Ratio.- c) 18O/16O Ratio.- d) 15N/14N Ratio.- e) 34S/32S Ratio.- References.- A. Structural Botany.- I. Cytology and Morphogenesis of the Prokaryotic Cell.- 1. Structural Organization and Biogenesis of Bacterial Flagella.- 2. Techniques to Study the Structure of Biofilms.- 3. A Consortium of Sulfate-Reducing Bacteria with the Capacity to Reduce Cr(VI) to Cr(III).- 4. Establishment of Biofilms in the Laboratory, and Studies of Inherent Dynamics and Interactions.- References.- II. Cytology and Morphogenesis of Pollen and Spores.- 1. Delimitation of Topics; Monographs, Conference Proceedings, etc.- 2. Preparation Methods and the Preservation of Structures.- 3. Some Aspects of the Early Stages in Normal and Abnormal Spore/Pollen Grain Development.- a) Organization of Metabolically Highly Active Cells.- b) Mosses and Ferns.- c) Gymnosperms.- d) Angiosperms.- 4. First and Second Pollen Mitosis.- 5. Structural Connections Between VN, GC, and Sperm Cells (MGU Concept).- 6. Pollen Germination and the Early Stages of Pollen Tube Growth.- 7. Sporoderm Development and Composition.- a) Fossil Material, Ferns, and Gymnosperms.- b) Excursus on the Phylogenetic Significance of Spore/Pollen Wall and Aperture Organization and Development.- c) Exine Substructure Organization.- d) Young Stages: Role of Callose, Monad Versus Polyad Development.- e) Exine Pattern.- f) Exine Coating: Composition and Function.- g) Intine and Other Sporoderm Strata.- References.- B. Physiology.- I. Plant Water Relations.- 1. Water Relations of Cells and Tissues.- 2. Root Water Uptake and Water Movement Through the Plant.- 3. Stomatal Behavior and Transpiration.- 4. Water Relations of Seeds and During Early Germination Stages.- a) Orthodox Seeds.- b) Recalcitrant Seeds.- 5. Implications of Water Stress.- a) Drought Effects on Metabolism.- b) Drought Resistance.- 6. Habitat Water Relations and Plant Performance.- 7. Water Relations of Poikilohydric Plants.- References.- II. Humic Substances and Plant Nutrition.- 1. Introduction.- 2. Definitions, Chemical and Structural Characteristics of Humic Substances.- 3. Effects of Humic Substances on Soil Fertility.- a) Physical Properties of Soil.- b) Source of Nutrients.- c) Influence on Cation Exchange Capacity.- d) Complexing Properties.- 4. Effect on Growth and Nutrient Contents of Plants.- 5. Effect on Mechanisms of Nutrient Uptake.- a) Uptake Rates.- b) Energy Metabolism.- c) Uptake of Humic Substances.- d) Membrane Properties.- 6. Role of Humic Substances as Natural Chelates.- 7. Conclusions.- References.- III. Selected Topics of Polyketide Biosynthesis.- 1. Introduction.- 2. 6-Methylsalicylic Acid and Orsellinic Acid.- 3. Melleine, Aspyrone, and Related Compounds.- 4. Nectriapyrone and Related Pyrones.- 5. Harzianolide.- 6. Dihydrogladiolic Acid.- 7. Spicifernin.- References.- IV. Photosynthesis Carbon Metabolism: The Chloroplast's Sesquicentenary, and Some Thoughts on the Limits to Plant Productivity.- 1. Introduction.- 2. New Locations and Pathways.- 3. Uptake of Inorganic Carbon.- 4. Events In and On the Chloroplast.- a) The Calvin Cycle.- b) RuBP Carboxylase.- c) Other Calvin Cycle Enzymes.- d) Starch Metabolism.- e) Envelope Transporters.- f) Photoinhibition.- g) The Mehler Reaction, and Photorespiration.- 5. Mitochondrial Respiration.- 6. Sucrose Biosynthesis.- 7. C4 Metabolism.- a) C4 plants.- b) C3-C4 Intermediate Plants.- c) Crassulacean Acid Metabolism.- d) PEP Carboxylase and Malate Dehydrogenase.- 8