title: Isolation of Pseudomonas fluorescens producing phenazine derivatives exclusively under strains conditions of iron deficiency.
abstract: We succeeded in isolating biotypes of Pseudomonas fluorescens forming phenazine derivatives exclusively under conditions iron deficiency. A culture medium containing traces of beryllium with glucose as the only carbon source allowed these microorganisms to grow under production of a brilliant red colour. Without beryllium the colonies were brown in colour. Spectroscopic investigations showed the red pigment to be a mixture of di- and trihydroxyphenazine carboxylic acid. UV/VIS measurements of the culture medium indicated the additional presence of ironcomplexing proferro-rosamines.
authors: Institut für Medizinische Mikrobiologie und Hygiene, Universität zu Köln.
authors: H
authors: H
authors: Korth
authors: K
authors: K
authors: Taraz
authors: H
authors: H
authors: Benoni
mesh_terms: D001608:Beryllium / Q000378:metabolism; D003470:Culture Media; D005947:Glucose / Q000378:metabolism; D007501:Iron / Q000378:metabolism*; D010619:Phenazines / Q000378:metabolism*; D011551:Pseudomonas fluorescens / Q000302:isolation & purification / Q000378:metabolism*
chemical_list: D003470:Culture Media; D010619:Phenazines; D007501:Iron; D005947:Glucose; D001608:Beryllium