Review.- Stable Isotope in Plant Physiology and Ecology.- A. Structural Botany.- I. Cytology and Morphogenesis of the Prokaryotic Cell.- II. Cytology and Morphogenesis of Pollen and Spores.- B. Physiology.- I. Plant Water Relations.- II. Humic Substances and Plant Nutrition.- III. Selected Topics of Polyketide Biosynthesis.- IV. Photosynthesis Carbon Metabolism: The Chloroplast’s Sesquicentenary, and Some Thoughts on the Limits to Plant Productivity.- V. Plant Stress. The Adaptive Potential of Dynamic Systems..- VIa. Photochrome.- VIb. Movement of Pulvinated Leaves.- C. Genetics.- I. Replication: The Role of Escherichia coli Heat Shock Proteins in DNA Replication.- II. Recombination: Sexual Reproduction in Plants: Self-Incompatibility as a Mechanism Promoting Outbreeding and Gene Flow.- III. Mutation: Modified Starch Metabolism in Mutant and Transgenic Plants.- IV. Function: Histones in Higher Plants.- V. Extrachromosomal Inheritance: Yeast Linear Killer Plasmids as a Tool in Genetic Engineering.- D. Taxonomy.- I. Systematics of the Bryophytes.- II. Paleobotany of Land Plants.- E. Geobotany.- I. Plant Geography.- II. Salt Resistance in Herbaceous Halophytes and Mangroves.- F. Special Topics.- I. Mycorrhizae: Ectomycorrhiza and Ectendomycorrhiza.- II. Symbioses: Mycorrhizae.