Costs and benefits of two direct defenses in nicotiana attenuata [Elektronische Ressource] : nicotine and trypsin protease inhibitors / von Anke Steppuhn

Costs and Benefits of Two Direct Defenses in Nicotiana attenuata: Nicotine and Trypsin Protease Inhibitors Dissertation zur Erlangung des akademischen Grades doctor rerum naturalium (Dr. rer. nat.) vorgelegt dem Rat der Biologisch-Pharmazeutischen Fakultät der Friedrich-Schiller-Universität Jena von Diplom-Biologin Anke Steppuhn geboren am 26. April 1977 in Berlin Gutachter: 1. Prof. Dr. Ian T. Baldwin 2. Prof. Dr. Wolfgang W. Weisser 3. Prof. Dr. May R. Berenbaum Tag der Doktorprüfung: 10.08.2007 Tag der öffentlichen Verteidigung: 18.09.2007 Table of Contents 1. Introduction 1.1 On the bottom of the food chain: How plants survive 11.2 “On/off-button” of genes: Gene silencing to study plant defense 21.3 On the burn: The ecology of Nicotiana attenuata 51.4 On the battlefield: Nicotiana attenuata’s herbivores and its defense 6strategies 1.5 On the books: Tests of the cost-benefit paradigm (thesis questions) 10 2. List of Manuscripts: Contents and Author’s Contributions 12 3. Manuscripts I. A. Steppuhn and I.T. Baldwin (in press) 15“Induced Defenses and the Cost-Benefit Paradigm” In: Induced Plant Resistance to Herbivory, ed. A. Schaller Springer Berlin Heidelberg, in press II. A. Steppuhn, K. Gase, B. Krock, R. Halitschke, and I.T. Baldwin 43(2004) “Nicotine’s Defensive Function in Nature” PLoS Biology, 2: 1074-1080 III. A.