Microbial siderophores in rhizophere interactions in heavy metal containing environments [Elektronische Ressource] / von Christian O. Dimkpa

Microbial Siderophores in Rhizosphere Interactions in Heavy Metal-Containing Environments 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 Christian O. Dimkpa Master of Science in Molecular Biology Geboren in Nigeria Gutachter (Reviewer): 1. Prof. Dr. Erika Kothe (FSU, Jena) 2. Prof. Dr. Georg Büchel (FSU, Jena) 3. Prof. Dr. Hubertus Haas (Innsbruck, Austria) Tag der Doktorprüfung (Day of Doctoral examination): 09.02.2009 Tag der öffentlichen Verteidigung (Day of Public defense): 27.04.2009 3TABLE OF CONTENT 1 GENERAL INTRODUCTION------------------------------------------------------------6 1. Overview------------------------------------------------------6 1.1. Streptomyces spp and siderophores--------------------------------------------------8 1.1. 1. Genetics of siderophore production in Streptomycetes----------------------8 1. 1.1.a. Biosynthesis of siderophores in Streptomyces-----------------------8 1. 1.1.b. Transport of siderophores in Streptomyces------------------------------------11 1. 1.1.c. Regulation of siderophore production in Streptomyces-----------------------12 1.2. Ecology of siderophores with special reference to environmental pH------12 1. 3.