Protection of Saccharomyces cerevisiae against Cd2+ Toxicity by Ca2+

Autor:	G. W. F. H. Borst-Pauwels, P. J. M. Belde, B. G. F. Kessels
Rok vydání:	1985
Předmět:	Cadmium biology Magnesium Potassium Saccharomyces cerevisiae chemistry.chemical_element Calcium biology.organism_classification Microbiology Yeast chemistry Biochemistry Toxicity Biophysics Incubation
Zdroj:	Microbiology. 131:2533-2537
ISSN:	1465-2080 1350-0872
DOI:	10.1099/00221287-131-10-2533
Popis:	Summary: Ca2+ protected yeast cells very effectively against the toxic effects of Cd2+; Mg2+ had only a slight protecting effect as far as protection against Cd2+-induced release of K+ was concerned. Protection of the yeast cells against Cd2+ toxicity was due to a reduction in Cd2+ uptake in the presence of Ca2+. A single relationship existed between the relative rate of K+ release induced by Cd2+ and the cellular Cd2+ concentration. Within the first few minutes of incubating cells with Cd2+, the molar ratio of K+ released and Cd2+ accumulated was 22 and was independent of the amount of CdCl2 added. This ratio decreased during incubation of the cells with Cd2+, depending on the external Cd2+ concentration.
Databáze:	OpenAIRE
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