The involvement of ATP sulfurylase in Se(VI) and Cr(VI) reduction processes in the fission yeast Schizosaccharomyces pombe

Applied Microbiology and Biotechnology
P RasporM Batic

Abstract

The response of Schizosaccharomyces pombe towards the oxyanions selenate [Se(VI)] and dichromate [Cr(VI)] was investigated in order to establish the involvement of the yeast ATP sulfurylase in their reduction. An ATP sulfurylase-defective/selenate-resistant mutant of S. pombe (B-579 Se(R) -2) and an ATP sulfurylase-active/selenate-sensitive strain of S. pombe (B-579 Se(S)) were included in this study. The inhibitory effect of Se(VI) and Cr(VI) oxyanions on growth and bioaccumulation was measured. The sensitive strain showed natural sensitivity to selenate while the resistant mutant tolerated a 100-fold higher concentration of selenate. These results indicate that selenate toxicity to microorganisms is connected with the reduction of selenate to selenite. Both strains showed similar sensitivity to Cr(VI) and in this study there was no evidence that ATP sulfurylase participates in the reduction process of Cr(VI).

Citations

Nov 25, 2005·Photosynthesis Research·T G SorsD E Salt
Jun 9, 2005·The Plant Journal : for Cell and Molecular Biology·Thomas G SorsDavid E Salt
Apr 7, 2005·Journal of Basic Microbiology·Stefan FujsMartin Batic
Oct 18, 2020·Journal of Hazardous Materials·Richard C Trippe, Elizabeth A H Pilon-Smits
Jun 29, 2021·Metallomics : Integrated Biometal Science·Haiyan JiangTianfeng Chen

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