Influence of cysteine and selenodicysteine on the uptake of zinc by Chlorella vulgaris Beijerinck

Autor: Krystyna Samochocka, Marian Czauderna
Rok vydání: 1982
Předmět:
Zdroj: The International Journal of Applied Radiation and Isotopes. 33:1369-1373
ISSN: 0020-708X
DOI: 10.1016/0020-708x(82)90170-3
Popis: The uptake of zinc labelled with radioactive 65 Zn in the presence of cysteine and selenodicysteine by Chlorella vulgaris was examined. The concentration of zinc ions in the medium was 20 mg per l. The uptake yield was found to be enhanced by selenodicysteine. At concentrations of 10 −7 −10 −6 M the growth rate of Chlorella vulgaris was accelerated by the latter, provided that the specific activity of 65 Zn was 3.7 MBq/l. At this specific zinc activity cysteine increased the uptake yield during the initial 50 h of the incubation process. At specific 65 Zn-activity of 55.5 MBq/l selenodicysteine and cysteine only slightly influenced the zinc uptake by Chlorella vulgaris . No increment in the biomass was observed at this specific zinc radioactivity.
Databáze: OpenAIRE