Objectif In boreal forests, one of the most abundant and diverse groups of soil organisms is the obligatory symbiotic ectomycorrhizal (ECM) fungus. Laboratory experiments and manipulative field experiments have shown marked differences in response by individual ECM species and hence change in community structure to changing environmental conditions . This leads to the hypothesis that high functional diversity exists among ECM fungi. By concentrating on a single, but highly important ECM fungal genus, the combined objectives of assessing both functional and organism diversity within ECM fungal communities can be achieved. To attain these goals, a DNA sequence database from authenticated herbarium collections will be established. This will allow not only a clarification of the current taxonomic state of the genus Lactations in Europe but will allow the identification of field collected Lactations mycorrhizas and derived isolates as well as the selection of intra-specific markers for Population studies. Concurrently, a culture bank of Lactarius isolates, obtained from fresh scorecard and mycorrhizal material, will be established. Long term storage requirements will be determined. A series of standardised physiological assessments will be performed that examine the enzymatic capabilities of the isolates to mobilise a range of ecologically important N and P substrates. All data will be compiled in a electronic database that will be made available through the internet. Champ scientifique natural sciencescomputer and information sciencesinternetnatural sciencescomputer and information sciencesdatabasesnatural sciencesbiological sciencesgeneticsDNAnatural sciencesbiological sciencesmicrobiologymycology Programme(s) FP5-EESD - Programme for research, technological development and demonstration on "Energy, environment and sustainable development, 1998-2002" Thème(s) 1.1.4.-2. - Key action Global Change, Climate and Biodiversity Appel à propositions Data not available Régime de financement RGI - Research grants (individual fellowships) Coordinateur THE SWEDISH UNIVERSITY OF AGRICULTURAL SCIENCES Contribution de l’UE Aucune donnée Adresse Ulls Väg 26 A 750 07 UPPSALA Suède Voir sur la carte Coût total Aucune donnée
