@article{mbs:/content/journal/micro/10.1099/00221287-131-12-3251, author = "Albesa, Inés and Barberis, Lucila I. and Pájaro, María C. and Eraso, Alberto J.", title = "Pyoverdine Production by Pseudomonas fluorescens in Synthetic Media with Various Sources of Nitrogen", journal= "Microbiology", year = "1985", volume = "131", number = "12", pages = "3251-3254", doi = "https://doi.org/10.1099/00221287-131-12-3251", url = "https://www.microbiologyresearch.org/content/journal/micro/10.1099/00221287-131-12-3251", publisher = "Microbiology Society", issn = "1465-2080", type = "Journal Article", abstract = "Summary: The influence of the nitrogen source on pyoverdine production by Pseudomonas fluorescens grown in chemostat culture in synthetic media at constant pH was studied. Pigment synthesis was highest in a medium with proline as the nitrogen source; other amino acids were less effective in promoting pigment synthesis. The pH and Fe3+ content of the media affected pyoverdine production. The ratio of pigment to growth was maximal at pH 8. When the Fe3+ concentration was increased from 10 to 200 μg 1−1 in media with the same nitrogen source, pyoverdine synthesis decreased. Since the Fe3+ contents of the synthetic media were different, the amount present was adjusted to a standard concentration to permit comparisons between the various nitrogen sources.", }