Importance of biotic interactions for the fitness and activity of rhizosphere biocontrol pseudomonads [Elektronische Ressource] / von Alexandre Jousset

Importance of biotic interactions for the fitness and activity of rhizosphere biocontrol pseudomonads Vom Fachbereich Biologie der Technischen Universität Darmstadt Zur Erlangung des akademischen Grades eines Doctor rerum naturalium genehmigte Dissertation von Dipl. Biol. Alexandre Jousset aus Lausanne (Schweiz) Berichterstatter: Prof. Dr. Stefan Scheu Mitberichterstatter: Prof. Dr. Michael Bonkowski Tag der Einreichung: 24. März 2009 Tag der mündlichen Prüfung: 8. Mai 2009 Darmstadt 2009 D17 „All novelty is but oblivion“ Francis Bacon Biotic interactions and the fitness of biocontrol bacteria Contents Contents i Summary iv Zusammenfassung vi List of Publications viii 1. .... Introduction 2 1.1. Biocontrol of plant diseases 2 1.1.1. Mode of action of biocontrol bacteria 3 1.1.2. Restrictions to the use of biocontrol bacteria 4 1.2. Ecology of rhizosphere bacteria 4 1.2.1. The rhizosphere 4 1.2.2. Fundamental and realised niche: Rhizosphere competence of biocontrol bacteria 5 1.2.3. Biotic interactions in the rhizosphere 6 1.2.4. Bacterial defence strategies: importance for biocontrol 8 1.2.5. Objectives of this thesis 9 1.2.6. Organisms 9 1.2.7. Experiments 11 2. ....