Effects of Emerging Pollutant Mixtures: Assessing the Impact of Caffeine and Ionic Liquid on Cyanobacteria and Diatom Species - Publication - Bridge of Knowledge

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Effects of Emerging Pollutant Mixtures: Assessing the Impact of Caffeine and Ionic Liquid on Cyanobacteria and Diatom Species

Abstract

The presence of micropollutants poses significant environmental concerns due to their potential toxicity in aquatic ecosystems. However, the effects of micropollutant mixtures, particularly synergistic or antagonistic interactions, remain underexplored. The study employs nonstandard biomarkers to investigate the interaction effects of binary mixtures of caffeine, a prevalent anthropogenic contaminant, and the imidazolium-based ionic liquid IMI-8C(CN)3, a representative of a new group of micropollutants, on two photosynthetic microorganisms: the marine diatom Phaeodactylum tricornutum and the freshwater/brackish cyanobacterium Microcystis aerugi- nosa, under chronic exposure conditions. Key findings reveal photoprotective responses in both microorganisms, including enhanced non-photochemical quenching (NPQ), activation of the xanthophyll cycle, and photosyn- thetic activity disruption as indicated by altered chlorophyll a fluorescence parameters. Environmentally rele- vant caffeine concentration (10 μg/l) significantly increased the DI0/RC (dissipation of photochemical energy per reaction center) parameter, indicating heightened energy dissipation as a stress response. Mixture toxicity pre- dictions using concentration addition (CA) and independent action (IA) models showed predominantly antag- onistic interactions.

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Authors (5)

  • Photo of  Lilianna Sharma

    Lilianna Sharma

    • Institute of Oceanology, Polish Academy of Sciences, Powsta´nc´ow Warszawy 55, Sopot, Poland
  • Photo of  Joanna Stoń-Egiert

    Joanna Stoń-Egiert

    • Institute of Oceanology, Polish Academy of Sciences, Powsta´nc´ow Warszawy 55, Sopot, Poland
  • Photo of  Grzegorz Siedlewicz

    Grzegorz Siedlewicz

    • Institute of Oceanology, Polish Academy of Sciences, Powsta´nc´ow Warszawy 55, Sopot, Poland
  • Photo of dr hab. Ksenia Pazdro

    Ksenia Pazdro dr hab.

    • Institute of Oceanology, Polish Academy of Sciences, Powsta´nc´ow Warszawy 55, Sopot, Poland

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Details

Category:
Articles
Type:
artykuły w czasopismach
Published in:
JOURNAL OF HAZARDOUS MATERIALS no. 491,
ISSN: 0304-3894
Language:
English
Publication year:
2025
Bibliographic description:
Sharma L., Kudłak B., Stoń-Egiert J., Siedlewicz G., Pazdro K.: Effects of Emerging Pollutant Mixtures: Assessing the Impact of Caffeine and Ionic Liquid on Cyanobacteria and Diatom Species// JOURNAL OF HAZARDOUS MATERIALS -, (2025), s.138011-
DOI:
Digital Object Identifier (open in new tab) 10.1016/j.jhazmat.2025.138011
Sources of funding:
  • n NCN 2021/41/N/NZ9/ 00315
Verified by:
Gdańsk University of Technology

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