Description: Das Projekt "Natural disease control by root endophytes in a changing climate" wird vom Umweltbundesamt gefördert und von Eidgenössische Technische Hochschule Zürich, Professur für Forstschutz und Dendrologie durchgeführt. The hypothesis that the dark septate root endophyte Phialocephala fortinii provides biological control of Phytophthora diseases to trees is tested under two temperature regimes. Phytophthora spp. are very aggressive plant pathogens affecting also woody plants in the natural environment. Studies on biological control of Phytophthora diseases are scarce, but antagonistic effects of endophytic fungi have been demonstrated in a few cases. In temperate and boreal forests, conifers are much less susceptible to Phytophthora diseases than deciduous broadleaf trees, whereas their roots are very frequently colonized by dark septate endophytes (DSE) with Phialocephala fortinii s.l., a supposedly asexual ascomycete, being the dominant component. This fungus also colonizes hardwoods, but to a lesser degree. Recent population genetic studies showed that P. fortinii s.l. consists of at least 15 reproductively isolated cryptic species (CSP). We hypothesise that P. fortinii s.l. may protect its host from Phytophthora disease depending on CSP and environmental conditions. A model system will be developed and applied to test this hypothesis using Norway spruce (Picea abies), beech (Fagus sylvatica) and Phytophthora citricola. The experimental program will be multidisciplinary in approach and include molecular, mycological, phytopathological (infection experiments, epifluorescence microscopy) and statistical methods.
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Origin: /Bund/UBA/UFORDAT
Tags: Buche ? Fichte ? Nadelgehölz ? Antagonistische Wirkung ? Laubbaum ? Waldschaden ? Baum ? Genetik ? Mikroskopie ? Temperatur ? Waldboden ? Wirkung ? Pflanzenwurzel ? Ascomycet ? Wirkung ? Bodenbelastung ? Studie ? Test ? Pilz ? Biologische Schädlingsbekämpfung ? Modellierung ? Klima ? Umwelt ? Bevölkerung ? Wald ? Sicherheitsanalyse ? Infektion ? Krankheit ? Kontrolle ? Krankheitserreger ? Sicherheitsüberprüfung ? Experiment ? angewandt ? neu ? statistisch ? unter ? Großer Wald ? Methode ? Programmierung ? Steuerung ? Untersuchung ? Verhältnis ? Annäherung ?
License: cc-by-nc-nd/4.0
Language: Englisch/English
Time ranges: 2007-02-01 - 2025-03-31
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