Journal
FEMS MICROBIOLOGY ECOLOGY
Volume 44, Issue 2, Pages 253-259Publisher
OXFORD UNIV PRESS
DOI: 10.1016/S0168-6496(03)00049-7
Keywords
heavy-metal detoxification; Cd; polyphosphate; algae; ultrastructure
Categories
Ask authors/readers for more resources
Ultrastructural changes induced by heavy metals (cadmium, zinc, and copper) and polyphosphate metabolism were studied in Chlamydomonas acidophila. Transmission electron microscopy indicated that cadmium led to the most drastic morphometric changes. An increase in number and volume of starch grains and vacuoles as well as the presence of electron dense deposits in vacuole and membrane whorls were observed. Energy-dispersive X-ray analysis revealed that vacuolar deposits inside cells treated with cadmium contained phosphate and cadmium. These ultrastructural changes were accompanied by a change in the intracellular polyphosphate level, as shown by in vivo P-31-nuclear magnetic resonance. It was also observed that cadmium treatment caused polyphosphate degradation and increased vacuolar short-chains and orthophosphates. (C) 2003 Federation of European Microbiological Societies. Published by Elsevier Science B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available