Faculty of Chemistry Repository - Cherry
University of Belgrade - Faculty of Chemistry
    • English
    • Српски
    • Српски (Serbia)
  • English 
    • English
    • Serbian (Cyrilic)
    • Serbian (Latin)
  • Login
View Item 
  •   Faculty of Chemistry Repository - Cherry
  • Hemijski fakultet
  • Publikacije
  • View Item
  •   Faculty of Chemistry Repository - Cherry
  • Hemijski fakultet
  • Publikacije
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

Mechanisms of detoxification of high copper concentrations by the microalga Chlorella sorokiniana

Authorized Users Only
2020
Authors
Vojvodić, Snežana
Stanić, Marina
Zechmann, Bernd
Dučić, Tanja
Žižić, Milan
Dimitrijević, Milena
Danilović Luković, Jelena
Milenković, Milica R.
Pittman, Jon K.
Spasojević, Ivan
Article (Published version)
Metadata
Show full item record
Abstract
Microalgae have evolved mechanisms to respond to changes in copper ion availability, which are very important for normal cellular function, to tolerate metal pollution of aquatic ecosystems, and for modulation of copper bioavailability and toxicity to other organisms. Knowledge and application of these mechanisms will benefit the use of microalgae in wastewater processing and biomass production, and the use of copper compounds in the suppression of harmful algal blooms. Here, using electron microscopy, synchrotron radiation-based Fourier transform infrared spectroscopy, electron paramagnetic resonance spectroscopy, and X-ray absorption fine structure spectroscopy, we show that the microalga Chlorella sorokiniana responds promptly to Cu2+ at high non-toxic concentration, by mucilage release, alterations in the architecture of the outer cell wall layer and lipid structures, and polyphosphate accumulation within mucilage matrix. The main route of copper detoxification is by Cu2+ coordinat...ion to polyphosphates in penta-coordinated geometry. The sequestrated Cu2+ was accessible and could be released by extracellular chelating agents. Finally, the reduction in Cu2+ to Cu1+ appears also to take place. These findings reveal the biochemical basis of the capacity of microalgae to adapt to high external copper concentrations and to serve as both, sinks and pools of environmental copper.

Keywords:
adaptive response / cell wall / copper / microalgae
Source:
The Biochemical Journal, 2020, 477, 19, 3729-3741
Publisher:
  • Portland Press
Projects:
  • This work is supported by the NATO Science for Peace and Security Programme, Project number G5320.

DOI: 10.1042/BCJ20200600

ISSN: 0264-6021

WoS: 000582387100006

Scopus: 2-s2.0-85092680949
[ Google Scholar ]
URI
http://cherry.chem.bg.ac.rs/handle/123456789/4263
Collections
  • Publikacije
Institution
Hemijski fakultet

DSpace software copyright © 2002-2015  DuraSpace
About CHERRY - CHEmistry RepositoRY | Send Feedback

OpenAIRERCUB
 

 

All of DSpaceInstitutionsAuthorsTitlesSubjectsThis institutionAuthorsTitlesSubjects

Statistics

View Usage Statistics

DSpace software copyright © 2002-2015  DuraSpace
About CHERRY - CHEmistry RepositoRY | Send Feedback

OpenAIRERCUB