期刊
ARCHIVES OF MICROBIOLOGY
卷 196, 期 10, 页码 697-707出版社
SPRINGER
DOI: 10.1007/s00203-014-1008-9
关键词
Planktothrix agardhii; Microcystins; Non-ribosomal peptides; Reservoir
类别
资金
- Ministry of Science and Higher Education in Poland [NN305 156136]
- National Science Centre in Poland [NCN 2012/0518/B/NZ8/01222]
- European Cooperation in Science and Technology, COST Action [ES 1105]
Planktothtrix agardhii (Oscillatoriales) is a filamentous cyanobacterium, which frequently forms blooms in shallow, polymictic and eutrophicated waters. This species is also a rich source of unique linear and cyclic peptides. In the current study, the profile of the peptides in samples from the P. agardhii-dominated Siemianwka Dam Reservoir (SDR) (northeast Poland) was analyzed for four subsequent years (2009-2012). The LC-MS/MS analyses revealed the presence of 33 peptides. Twelve of the most abundant ones, including five microcystins, five anabaenopeptins, one aeruginosin and one planktocyclin, were present in all field samples collected during the study. The detection of different peptides in two P. agardhii isolates indicated that the SDR population was composed of several chemotypes, characterized by different peptide patterns. The total concentration of microcystins (MCs) positively correlated with the biomass of P. agardhii. Between subsequent years, the changes in the ratio of the total MCs concentration to the biomass of P. agardhii were noticed, but they were less than threefold. This is the first study on the production of different classes of non-ribosomal peptides by freshwater cyanobacteria in Poland.
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