Identical Pyoverdines from Pseudomonas fluorescens 9AW and from Pseudomonas putida 9BW*

H. Budzikiewicz, S. Kilz, K. Taraz3, J.-M. M eyerb a Institut für Organische Chemie der Universität zu Köln, Greinstr. 4, D-50939 Köln, Germany b Laboratoire de Microbiologie et de Genetique, Universite Louis Pasteur, Unite de la Recherche, Associee au Centre National Scientifique no 1481, 28 rue de Goethe, F-67000 Strasbourg, France Z. Naturforsch. 52c, 721-728 (1997); received September 3/September 29, 1997 Pseudomonas fluorescens, Pseudomonas putida, Pyoverdine, Siderophore, Bacterial Classification From Pseudomonas fluorescens 9AW and from Pseudomonas putida 9BW identical pyoverdine-type siderophores were isolated and their structures were elucidated by spectroscopic methods and degradation studies. These novel compounds are of interest as they contain L-threo-ß-hydroxy histidine in their peptide chains, an amino acid sofar encountered in nature only rarely. The co-occurence of the same pyoverdine in different Pseudomonas species and its significance for the classification is discussed.