Plant Viruses, Subviral RNAs and Viroids.- Contribution of Plant and Virus Genes to Cauliflower Mosaic Virus Pathogenicity.- Bromovirus RNA Replication and Host Specificity.- Analysis of Tobacco Mosaic Virus-Host Interactions by Directed Genome Modification.- Cell-to-Cell Movement of Plant Viruses.- Tomato Spotted Wilt Virus: A Bunyavirus Invading the Plant Kingdom.- Origin and Evolution of Defective Interfering RNAs of Tomato Bushy Stunt Virus.- Self-Cleavage Activities from Viral Satellite RNAs.- Viroid Structures Involved in Protein Binding and Replication.- Analysis of Viroid Pathogenicity by Genome Modification.- Nitrogen Fixation, Nitrogen Metabolism.- An Extracellular Oligosaccharide Symbiotic Signal Produced by Rhizobium meliloti.- Tissue-Specific Expression of Eariy Nodulin Genes.- Internalization of Rhizobium by Piant Cells: Targeting and Role of Peribacteroid Membrane Nodulins.- Regulation of Nodule Specific Genes.- Regulation of Genes for Enzymes along a Common Nitrogen Metabolic Pathway.- Phytopathology.- Molecular Basis of Plant Defense Responses to Fungal Infections.- Plant Genes Involved in Resistance to Viruses.- Repeated DNA Sequences and the Analysis of Host Specifity in the Rice Blast Fungus.- Molecular Genetics of the Tomato Pathogen Cladosporium fulvum.- Transgenic Potato Cultivars Resistant to Potato Virus X.- Agrobacterium, Transformation.- The Agrobacterium Virulence System.- T-DNA Gene-Functions.- Morphogenetic Genes in the T-DNA of Ri Plasmids.- Transient Expression and Stable Transformation of Maize Using Microprojectiles.- Agroinfection as a Tool for the Investigation of Plant-Pathogen Interactions.- Physical Mapping of the Arabidopsis Genome and its Applications.- Application of Restriction Fragment Length Polymorphism to Maize Breeding.- Soybean Genome Analysis: DNA Polymorphisms are Identified by Oligonucleotide Primers of Arbitrary Sequence.- Genome Analysis in Brassica Using RFLPs.- Physical Mapping of DNA Sequences on Plant Chromosomes by Light Microscopy and High Resolution Scanning Electron Microscopy.- Transposons.- Structure and Function of the Maize Transposable Element Activator (AC).- Expression and Regulation of the Maize Spm Transposable Element.- The En/Spm Transposable Element of Zea mays.- The Mechanism and Control of Tam3 Transposition.- Characterization of Mobile Endogenous Copia-Like Transposable Elements in the Genome of Solanaceae.- Mitochondria, Chloroplasts, Photosynthesis.- Organization and Evolution of the Maize Mitochondrial Genome.- RNA Editing in Wheat Mitochondria: A New Mechanism for the Modulation of Gene Expression.- Topological Orientation of the Membrane Protein URF13.- Cytoplasmic Male Sterility in Petunia.- Nuclear and Chloroplast Genes Involved in the Expression of Specific Chloroplast Genes of Chlamydomonas reinhardtii.- The Thylakoid Membrane of Higher Plants: Genes, their Expression and Interaction.- Greening of Etiolated Monocots - The Impact of Leaf Development on Plastid Gene Expression.- Regulation of Chloroplast Biogenesis in Barley.- Chlorophyll Biosynthesis.- Molecular Approaches to Understand Sink-Source Relations in Higher Plants.- Gene Expression, Photoreceptors.- The Expression of an Ovalbumin and a Seed Protein Gene in the Leaves of Transgenic Plants.- Regulation of Plant Gene Expression by Antisense RNA.- Photocontrol of Gene Expression.- phyA Gene Promoter Analysis.- Approaches to Understanding Phytochrome Regulation of Transcription in Lemna gibba and Arabidopsis thaliana.- Cis-Regulatory Elements for the Circadian Clock Regulated Transcription of the Wheat cab-1 Gene.- Plant Development.- Self-Incompatibility as a Model for Cell-Cell Recognition in Flowering Plants.- Floral Homoeotic and Pigment Mutations Produced by Transposon-Mutagenesis in Antirrhinum majus.- Molecular Analysis of the Homeotic Flower Gene deficiens of Antirrhinum majus.- Mutations of Knotted Alter Cell Interactions in the Developing Maize Leaf.- T-DNA Insertion Mutagen...