The effect of gibberelilic acid (GA3) on growth, metal biosorption and metabolism of the green algae Chlorella vulgaris (chlorophyceae) beijerinck exposed to cadmium and lead stress

• Autorzy: Falkowska M. , Pietryczuk A. , Piotrowska A. , Bajguz A. , Grygoruk A. , Czerpak R.
• Języki publikacji: EN

Abstrakty

EN

The aim of this work was to show how gibberellic acid (GA₃) affects growth, metal biosorption, and the content of essential metabolites (cell number, proteins, monosaccharides, chlorophyll a and b, and total carotenoids) in unicellular green algae Chlorella vulgaris treated with lead (Pb) and cadmium (Cd) during 3 days of culture. Under the influence of 10⁻⁵ M GA₃, algal cells bioaccumulated and bioconcentrated toxic metals from nutrient medium in a dose- and exposure-dependent manner. Moreover, this phytohormone protected C. vulgaris against Pb and Cd stress at a range of low concentrations 10⁻⁷-10⁻⁶ M inducing the increase in cell number and protein, photosynthetic pigment, and monosaccharide content in the culture. However, GA₃ was not able to minimize the harmful effects of the highest dose (10⁻⁴ M) of Cd and Pb, because growth inhibition and reduction in metabolite level was observed. The data suggest that GA₃ plays an important role in the growth and metabolism of microalgae C. vulgaris exposed to heavy metal stress and its adaptation ability to a low-level polluted aquatic environment.

• Wydawca: -
• Czasopismo: Polish Journal of Environmental Studies
• Rocznik: 2011
• Tom: 20
• Numer: 1
• Opis fizyczny: p.53-59,fig.,ref

Twórcy

autor

Falkowska M.

• Institute of Biology, Department of Plant Biochemistry and Toxicology, University of Bialystok, Swierkowa 20B, 15-950 Bialystok, Poland

autor

Pietryczuk A.

autor

Piotrowska A.

autor

Bajguz A.

autor

Grygoruk A.

autor

Czerpak R.

Bibliografia

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