MYCORRHIZAE: 1 Exploring the Genome of Glomalean Fungi.- 2 Molecular Approaches to Arbuscular Mycorrhiza Functioning.- 3 Immunochemical Characterization of Mycorrhizal Fungi.- 4 At the Interface Between Mycorrhizal Fungi and Plants: The Structural Organization of Cell Wall, Plasma Membrane and Cytoskeleton.- 5 Lipids of Mycorrhizae.- 6 Arbuscular Mycorrhiza - a Key Component of Sustainable Plant-Soil Ecosystems.- 7 Exchange of Carbohydrates Between Symbionts in Ectomycorrhiza.- FURTHER FUNGAL INTERACTIONS: 8 Piriformospora indica. An Axenically Culturable Mycorrhiza-Like Endosymbiotic Fungus.- 9 Geosiphon pyriforme, an Endocytosymbiosis Between Fungus and Cyanobacteria, and its Meaning as a Model System for Arbuscular Mycorrhiza Research.- LICHENES: 10 The Symbiotic Phenotype of Lichen-Forming Ascomycetes.- 11 Morphology and Phylogeny of Ascomycete Lichens.- 12 Basidiolichens.- FUNGAL BACTERIAL INTERACTIONS: 13 Fungal Bacterial Interactions