Effect of organic carbon sources on the toxicity of mercury to Chlorococcum infusionum [Schrank.] Menegh. and Ankistrodesmus falcatus [Corda] Ralfs

• Autorzy: Mohapatra P K , Mohanty R.C. , Sinha M.
• Języki publikacji: EN

Abstrakty

EN

Abstract - Mercury at all tested concentrations was found to be less toxic to Chlorococcum infusionum than to Ankistrodesmus falcatus. Ankistrodesmus growth was inhibited at all the tested doses of the metal while Chlorococcum remained unaffected up to 0.005µM of Hg2+. A reduction of chlorophyll and protein content, decrease in Chl a/b ratio, and accumulation of glycolate was observed at inhibitory concentrations of Hg2+ whereas amino acid synthesis was not significantly affected. Both the used carbon sources caused a reduction of Hg2+ toxicity to the test algae, glucose being more effective than glutamate.

PL

Stwierdzono, że we wszystkich badanych stężeniach rtęć jest mniej toksyczna dla Chlorococcum infusionum niż dla Ankistrodesmus falcatus. Wzrost Ankistrodesmus falcatus był hamowany przy wszystkich badanych dawkach, podczas gdy wzrost Chlorococcum infusionum pozostał nie zmieniony do 0,005 µM Hg2+. Przy hamujących stężeniach Hg2+ stwierdzono redukcję ilości chlorofilu i białka, zmniejszenie stosunku chlorofilu a/b i akumulację glikolanów, natomiast synteza aminokwasów nie została w istotnym stopniu zaburzona. Oba zastosowane źródła węgla obniżyły toksyczność Hg2+ dla badanych glonów, przy czym glukoza była bardziej skuteczna niż glutamina.

Słowa kluczowe

EN

glucose; glutamate; pigment; mercury; Chlorococcum infusionum; Ankistrodesmus falcatus; growth; glycolate; toxicity; protein; organic carbon; water pollution; heavy metal

• Wydawca: -
• Czasopismo: Acta Hydrobiologica
• Rocznik: 1995
• Tom: 37
• Numer: 1
• Opis fizyczny: p.21-28

Twórcy

autor

Mohapatra P K

• Utkal University, Bhubaneswar-751004, India

autor

Mohanty R.C.

autor

Sinha M.

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