Effects of oxytetracycline on growth and chlorophyll a fluorescence in green algae (Chlorella vulgaris), diatom (Phaeodactylum tricornutum) and cyanobacteria (Microcystis aeruginosa and Nodularia spumigena)

Grzegorz Siedlewicz , Adam Żak , Lilianna Sharma , Alicja Kosakowska , Ksenia Pazdro


The study aimed at measuring the influence of a wide range of oxytetracycline concentrations, with particular attention to the low levels of the antibiotic on cyanobacteria Microcystis aeruginosa and Nodularia spumigena, diatom Phaeodactylum tricornutum and the model green algae Chlorella vulgaris by conducting prolonged toxicity tests (lasting 10 days). Standard measurements (cell number, optical density, chlorophyll a concentration) were combined with photosynthetic parameters measurements. The obtained results show that concentrations of oxytetracycline present in the environment can affect tested microorganisms. It was found to decrease photosystem II efficiency and disrupt the photosynthesis process. A careful interpretation of photosynthetic parameters allowed a better understanding of the mode of action of oxytetracycline in relation to non-target photoautotrophic organisms like cyanobacteria and microalgae. In conclusion, it would appear that the use of standard chronic toxicity tests (72 h) does not allow to accurately and reliably assess the chronic impact of bioactive compounds including drugs and their metabolites on water organisms. On this basis, we recommend the application of extended duration tests.
Publication typeIn press (online first, early view)
Author Grzegorz Siedlewicz
Grzegorz Siedlewicz,,
, Adam Żak (FB / DPPB)
Adam Żak,,
- Department of Plant Physiology and Biotechnology
, Lilianna Sharma
Lilianna Sharma,,
, Alicja Kosakowska
Alicja Kosakowska,,
, Ksenia Pazdro
Ksenia Pazdro,,
Journal seriesOceanologia, ISSN 0078-3234, e-ISSN 2300-7370, (N/A 70 pkt)
Issue year2020
Noonline first
Publication size in sheets0.55
Keywords in Englishantibiotics, cyanobacteria, microalgae, chlorophyll a fluorescence, toxicity studies
ASJC Classification1104 Aquatic Science; 1902 Atmospheric Science; 1910 Oceanography; 2212 Ocean Engineering
URL https://doi.org/10.1016/j.oceano.2019.12.002
Languageen angielski
LicenseJournal (articles only); published final; Uznanie Autorstwa - Użycie Niekomercyjne - Bez utworów zależnych (CC-BY-NC-ND); with publication
Score (nominal)70
Score sourcejournalList
ScoreMinisterial score = 70.0, 15-03-2020, ArticleFromJournal
Publication indicators Scopus SNIP (Source Normalised Impact per Paper): 2017 = 1.157; WoS Impact Factor: 2018 = 1.988 (2) - 2018=2.112 (5)
Citation count*
Share Share

Get link to the record

* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.
Are you sure?