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2009 | 18 | 5 |
Tytuł artykułu

The effect of Zn and Mn on the toxicity of Cd to the green microalga Desmodesmus armatus cultured at ambient and elevated (2%) CO2 concentrations

Treść / Zawartość
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
A medium modified by 4-fold (Zn) or 2.5-fold (Mn) decreased/increased content of these metals did not influence the growth of the green microalga Desmodesmus armatus cultured for 24 h at ambient and elevated (2%) CO2, as compared with original BBM medium (Zn2+ = 2 mg/L, Mn2+ = 0.4 mg/L). The 4-fold increased content of Zn in the medium markedly enhanced the toxicity of CdCl2 applied at a concentration (16.8 mg/L) corresponding to EC50/24h. The 2.5-fold increase of Mn content reduced the inhibitory effect of Cd on the oxygen evolution rate and FV/FM. At low CO2, Cd did not affect the oxygen evolution but markedly stimulated the activity of carbonic anhydrase (CA). At elevated CO2, the rate of oxygen evolution was reduced by Cd, whereas CA activity remained unaffected.
Słowa kluczowe
Wydawca
-
Rocznik
Tom
18
Numer
5
Opis fizyczny
p.775-780,ref.
Twórcy
  • Department of Plant Physiology, University of Gdansk, Al.Marszalka J.Pilsudskiego 46, 81-378 Gdynia, Poland
  • Department of Plant Physiology, University of Gdansk, Al.Marszalka J.Pilsudskiego 46, 81-378 Gdynia, Poland
autor
  • Department of Plant Physiology, University of Gdansk, Al.Marszalka J.Pilsudskiego 46, 81-378 Gdynia, Poland
autor
  • Department of Plant Physiology, University of Gdansk, Al.Marszalka J.Pilsudskiego 46, 81-378 Gdynia, Poland
Bibliografia
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  • 5. MARSCHNER H. Mineral nutrition of higher plants. Academic Press, London 1995.
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  • 12. GHOSHAL D., GOYAL A. Carbon concentration mechanism(s) in unicellular green algae and cyanobacteria. J. Plant Biochem. Biotech. 10, 83, 2001.
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  • 16. WILBUR K. M., ANDERSON N. G. Electrometric and colorimetric determination of carbonic anhydrase. J. Biol. Chem. 176, 147, 1948.
  • 17. TRIPATHI B. N., GAUR J. P. Physiological behavior of Scenedesmus sp. during exposure to elevated levels of Cu and Zn and after withdrawal of metal stress. Protoplasma 229, 1, 2006.
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  • 22. FALLER P., KIENZLER K., KRIEGER-LISZKAY A. Mechanism of Cd²⁺ toxicity: Cd²⁺ inhibits photoactivation of photosystem II by competitive binding to the essential Ca²⁺ site. Biochim. Biophys. Acta 1706, 158, 2005.
  • 23. DUDOLADOVA M. V., KUPRIYANOVA E. V., MARKELOVA A. G., SINETOVA M. P., ALLAKHVERDIEV S. I., PRONINA N. A. The thylakoid carbonic anhydrase associated with photosystem II is the component of inorganic carbon accumulating system in cells of halo- and alkaliphilic cyanobacterium Rhabdoderma lineare. Biochim. Biophys. Acta 1767, 616, 2007.
  • 24. WANG B., LIU C-Q., WU Y. Effect of heavy metals on the activity of external carbonic anhydrase of microalga Chlamydomonas reinhardtii and microalge from Karst Lakes. Bull. Environ. Contam. Toxicol. 74, 227, 2005.
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Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.agro-0817d424-c8ff-49a0-a5cb-b86df3d24f33
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