With one volume each year, this series keeps scientists and advanced students informed of the latest developments and results in all areas of the plant sciences.The present volume includes reviews on genetics, cell biology, physiology, comparative morphology, systematics, ecology and vegetation science.

50 Years of Translocation in the Phloem of Plants, With Reference to Trees.- Introns, Splicing and Mobility.- Barley Mutagenesis.- Extranuclear Inheritance: Cytoplasmic Linear Double-Stranded DNA Killer Elements of the Dairy Yeast Kluyveromyces lactis.- Extranuclear Inheritance: Genetics and Biogenesis of Mitochondria.- Genetics of Phytopathogenic Bacteria.- Plant Biotechnology: Transgenic Crops for the Third Millennium.- Modification of Oilseed Quality by Genetic Transformation.- Significance of Phloem-Translocated Organic Sulfur Compounds for the Regulation of Sulfur Nutrition.- Mutualistic Relationships Between Algae and Fungi (Excluding Lichens).- The Extracellular Matrix of the Plant Cell: Location of Signal Perception, Transduction and Response.- Photosynthesis: Carbon Metabolism from DNA to Deoxyribose.- The Metabolic Diversity of Plant Cell and Tissue Cultures.- Molecular Systematics: 1997–1999.- Systematics and Evolution of the Algae. I. Genomics Meets Phylogeny.- Systematics of Bryophytes.- The Search for Generality in Studies of Disturbance and Ecosystem Dynamics.- Heterogeneous Soil-Resource Distribution and Plant Responses — from Individual-Plant Growth to Ecosystem Functioning.- The Existence of Bark and Stem Photosynthesis in Woody Plants and Its Significance for the Overall Carbon Gain. An Eco-Physiological and Ecological Approach.- Ecological Aspects of Clonal Growth in Plants.