Study on chromium-binding capacity of Callitriche cophocarpa in an aquatic environment
Joanna Augustynowicz , Joanna Kyzioł-Komosińska , Sylwester Smoleń , Andrzej Waloszek
AbstractThe aim of the present study was to investigate the binding strength of chromium (Cr) ions to aquatic macrophyte Callitriche cophocarpa. Shoots of the plants were incubated in a natural water solution containing Cr(III) or Cr(VI) at a concentration ranging from 0.5 to 4 mM under laboratory conditions. We found that C. cophocarpa has an extremely high capacity to bind Cr. The average level of accumulation reached 28,385 or 7,315 mg kg−1 dry weight for plants incubated with Cr(III) or Cr(VI), respectively. Shoots incubated in a 0.5 mM concentration of Cr(III) for 5 days removed almost 100 % of the metal from solution. The major pool of the bound Cr(III) ions follows the strongest mechanism of metal-binding to an organic matter. In contrast, we found that only 25 % of Cr(VI) ions are bound into the metallo-organic compounds and 57 % of Cr(VI) exists in an easily remobilizable form. Activity of a photosynthetic electron transport (as F V/F M) was evaluated with respect to the Cr-binding mechanism. Our results contribute to the development of knowledge on processes controlling bioremediation of heavy-metallic compounds in aquatic systems.
|Journal series||Archives of Environmental Contamination and Toxicology, ISSN 0090-4341, (A 25 pkt)|
|Publication size in sheets||0.5|
|Score|| = 25.0, 28-05-2019, ArticleFromJournal|
= 25.0, 28-05-2019, ArticleFromJournal
|Citation count*||10 (2016-06-02)|
|Finansowanie||The work was supported by the Grant No. DEC-2011/03/B/NZ9/00952 from the National Science Centre, Poland|
* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.