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• Part One: Stat us and Function of Vesicular-Arbuscular (VA) Mycorrhiza in Ecosystems Part Two: Ectomycorrhizas in Temperate and Boreal Forest Ecosystems Part Three: Mycorrhizas in Disturbed, Agricultural and Successional Ecosystems Part Four: Mycorrhizas in Heathland Ecosystems Part Five: Mycorrhizas in Tropical Ecosystems Part Seven: Posters Part Six: Physiological Ecology of Mycorrhizas 40: A Functional Comparison of Ecto- and Endomycorrhizas 41: Spatial Distributions of Nitrogen Assimilation Pathways in Ectomycorrhizas 42: Ectomycorrhizas - Organs for Uptake and Filtering of Cations 43: The Effects of Ectomycorrhizal Status on Plant-Water Relations and Sensitivity of Leaf Gas Exchange to Soil Drought in Douglas Fir (Pseudotsuga menziesii) Seedlings 44: Protein Activities as Potential Markers of Functional Endomycorrhizas in Plants 45: Plant-Fungal Interface in VA Mycorrhizas: A Structural Point of View 46: The Role of Ion Channels in Controlling Solute Exchange in Mycorrhizal Associations 47: Effect of Monovalent Cations on Efflux of Phosphate from the Ectomycorrhizal Fungus Pisolithus tincton•us 48: Comparative Analysis of IAA Production in Ectomycorrhizal, Ericoid and Saprophytic Fungi in Pure Culture 49: The survival of transplanted seedlings of ectomycorrhizal rain forest legumes in relation to forest composition 50: Effects of nitrogen on the mycelial extension of four different ectomycorrhizal fungi grown in symbiosis with Pinus sylvestris 51: Transformation of a mutant of Pisum sativum cv. ‘Sparkle’ by Agrobacteium rhizogenes - a possible plant partner for VA fungi and Rhizobium 52: Early events in ectomycorrhiza formation studied by electron microscopy 53: Dual in vitro rhizobial and ectomycorrhizal colonization of Acacia holosericea 54: The influence of Scots pine needle and humus extracts on the growth of some ectomycorrhizal fungi 55: Interactions between indigenous VAM fungi and soil ecotype in Terminalia superba in the wet tropics (Ivory Coast) 56: Influence of artificial substrata on mycorrhization of micropropagated fruit trees in a horticultural system 57: Occurrence of vesicular-arbuscular mycorrhiza on Douglas fir and Western hemlock seedlings 58: Effects of cadmium on ectomycorrhizal pine (Pinus sylvestris) seedlings 59: Effects of simulated acid rain, soil contamination and mycorrhizal infection on Picea abies seedlings 60: Mycorrhizal amelioration of metal toxicity to plants 61: Effect of 10 years of low-input sustainable agriculture upon VA fungi 62: Preferential cycling of phosphorus: The role of mycorrhizas 63: Nitrogen translocation through a root-free soil mediated by VA fungal hyphae 64: Early events of VA infection in host and non-host plants 65: Soil solution chemistry of ectomycorrhizal mat soils 66: Fungicide interactions with VA fungi in Ananas comosus grown in a tropical environment 67: Native populations of the Glomales influenced by terracing and fertilization under cultivated potato in the tropical highlands of Africa 68: Mycorrhizas in African Miombo Savanna woodlands 69: Ectomycorrhizal fungi in Kenya 70: Axenic sand culture for the study of mycorrhizal root systems and their rhizospheres 71: Do ectomycorrhizas affect uptake and toxicity of metals in roots of Norway spruce? 72: Nitrogen transport and depletion of soil nitrogen by external hyphae of VA mycorrhizas 73: Effects of nitrogen application on ericoid mycorrhiza of Calluna vulgris on a Danish heathland 74: Enhanced growth of external VA mycorrhizal hyphae in soil amended with straw 75: Effect of mycorrhizal inoculation in forest nurseries 76: Effects of organjc matter removal on fruitbody production of ectomycorrhizal fungi in stands of Pinus sylvestris 77: Results of ectomycorrhizal inoculation of pine species with Pisolithus tinctorius and Thelephora terrestris in Korea 78: Ecology of ectomycorrhiza and ectomycorrhizal fungi in Norway spruce forest ecosystems of Sumava Mts, Czechoslovakia 79: Production of siderophores by ectomycorrhizal fungi 80: Fungal mass in sporophores, mycorrhizas and living mycelia in Scots pine stands along a pollution gradient in the Oulu region of Finland 81: Effect of lead on the growth of eccomycorrhizal fungi 82: The role of VA mycorrhiza and soil phosphate in the early life history of the bluebell, Hyacinthoides non-scripta 83: Inoculation with Glomus intraradix improves growth of Acacia nilotica under non-sterile nursery conditions in Ethiopia 84: VA-Rhizobium interaction in productivity and nutrient content of yard long bean (Vigna unguiculata sesquipedalis) 85: The development of ectomycorrhizal infection, and its relationship to seedling growth 86: Auxin production and mycorrhizal ‘virulence’ 87: Immunological aspects of the characterization of Tuber magnatum and Tuber albidum 88: Comparison of the ectomycorrhizas formed by Russula ochroleuca on several tree species 89: Identification of ectomycorrhizal fungi by use of immunological techniques 90: Mycorrhizal status of Quercus and Fagus in Latium (central Italy) 91: Effects of liming and N-fertilization on ectomycorrhizas in a mature beech stand in the Soiling area (Germany) 92: Examination of single spore cu ltures of VA fungi by isoenzyme patterns after polyacrylamide gel electrophoresis (PAGE) 93: The role of mycorrhiza in the transfer of nitrogen from white clover to perennial ryegrass in pasture ecosystems 94: Seasonal variation in occurrence of VA mycorrhizal i nfection types in a Danish grassland community 95: Studies of the extension of individual mycelia of VA mycorrhizal fungi in natural vegetation 96: Effect of specific ectomycorrhizal fungi on growth of beech seedlings in damaged stands 97: Occurrence of ecto- and ericoid mycorrhizas on Gaultheria shallon and Rhododendron macrophyllum seedlings grown in soils from the Oregon coast range 98: Reaction of flax (Linum usitatissimum) to different stress factors after mycorrhizal infection 99: Dissolution and immobilization of phosphorus and cadmium from rock phosphates by eccomycorrhizal fungi 100: Reaction of the natural Norway spruce mycorrhizal flora to liming and acid irrigation 101: Differential effects of fungicides on VA fungal viability and efficiency 102: Are hydrophobic eccomycorrhizas important for microbial activity in the forest soil? 103: The effects of Cu and Ni on the axenic growth and on the element composition of Cenococcum geophilum and Suillus variegatus 104: The influence of organic and inorganic fertilization on the development of indigenous VA fungi in roots of red clover 105: Propagule production by VA fungi in red clover plants subjected to periodic removal of the aerial parts 106: Acceleration of VA m ycorrhiza development by bacteria or fungicides 107: Influence of water status on VA infection and growth of Festuca rubra 108: VA mycorrhizal colonization of maize in an industrially polluted soil and heavy metal transfer to the plant 109: The possible application of enzyme-linked immunosorbent assay (ELISA) for detection of Tuber albidum ectomycorrhizas 35: Short-term Changes in Vesicular-Arbuscular Mycorrhizal Spore Populations in Terminalia Plantations in Cameroon 36: Long-term Changes in Vesicular-Arbuscular Mycorrhizal Spore Populations in Terminalia Plantations in Cote d’Ivoire 37: Heterogeneity and Scale in Tropical Vesicular-Arbuscular Mycorrhiza Formation 38: Mycorrhizal Studies in Dipterocarp Forests in Indonesia 39: Controlled Mycorrhization of Eucalypts 31: The Role of Ericoid Mycorrhizas in the Nitrogen Nutrition and Ecology of Heathland Ecosystems 32: Mycorrhizal Aspects of Improved Growth of Spruce when Grown in Mixed Stands on Heathlands 33: Chitin Degradation by Hymenoscyphus ericae and the Influence of H. ericae on the Growth of Ectomycorrhizal Fungi 34: Effect of Ferric Iron on the Release of Siderophores by Ericoid Mycorrhizal Fungi 19: Soil Disturbance in Native Ecosystems – the Decline and Recover of Infectivity of VA Mycorrhizal Fungi 20: Soil Disturbance and the Effectiveness of Arbuscular Mycorrhizas in an Agricultural Ecosystem 21: Development of Mycorrhizal Patches in a Successional Arid Ecosystem 22: Extraradical Hyphal Development of Vesicular-Arbuscular Mycorrhizal Fungi in a Chronosequence of Prairie Restorations 23: Interactions between Soil-dwelling Insects and Mycorrhizas during Early Plant Succession 24: Are Mycorrhizal Fungi Present in Early Stages of Primary Succession? 25: The Use of 15N to Assess the Role of VA Mycorrhiza in Plant N Nutrition and its Application to Evaluate the Role of Mycor rhiza in Restoring Mediterranean Ecosystems 26: Use of VA Mycorrhizas in Agriculture: Problems and Prospects 27: Mycorrhizas,Forest Disturbance and Regeneration in the Pacific Northwestern United States 28: Studies on the Effects of S02 and 03 on the Mycorrhizas of Scots Pine by Observations Above and Below Ground 29: Sequences of Sheathing (Ecto-) Mycorrhi zal Fungi Associated with Man-made Forests, Temperate and Tropical 30: Mycorrhizal Succession and Morel Biology 10: The Ecological Potential of the Eccomycorrhizal Mycelium 11: Ecromycorrhizal Rhizomorphs: Organs of Contact 12: Uptake and Translocation of Nutrients by Eccomycorrhizal Fungal Mycelia 13: Mycorrhizal Mat Communities in Forest Soils 14: Ecological Role of Specificity Phenomena in Ectomycorrhizal Plant Communities: Potentials for lnterplant Linkages and Guild Development 15: Effects of Liming on Pine Ectomycorrhiza 16: Variations in Field Response of Forest Trees to Nursery Ectomycorrhizal Inoculation in Europe 17: Somatic Incompatibility - A Tool to Reveal Spatiotemporal Mycelial Structures of Ectomycorrhizal Fungi 18: Mixed Associations of Fungi in Ectomycorrhizal Roots 1: Nutrient Dynamics at the Soil-Root Interface (Rhizosphere) 2: Mycophyllas and Mycorrhizas: Comparisons and Contrasts 3: Why are some Plants more Mycorrhizal than Others? An Ecological Enquiry 4: What is the Role of VA Mycorrhizal Hyphae in Soil? 5: Contribution of Mycorrhizal Hyphae to Nutrient and Water Uptake of Plants 6: Phosphorus Transport by External Hyphae of Vesicular-Arbuscular Mycorrhizas 7: Mycorrhizal Infection of Wild Oats: Parental Effects on Offspring Nutrient Dynamics, Growth and Reproduction 8: Mycorrhizas, Seed Size and Seedling Establishment in a Low Nutrient Environment 9: The Nature of Fungal Species in Glomales (Zygomycetes)