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Title: Anhydrobiosis in yeast: influence of calcium and magnesium ions on yeast resistance to dehydration–rehydration
Authors: Trofimova, Yuliya
Walker, Graeme M.
Rapoport, Alexander
Affiliation: University of Abertay Dundee. School of Contemporary Sciences
Keywords: Yeast anhydrobiosis
Issue Date: Jul-2010
Publisher: Wiley-Blackwell
Type: Journal Article
Refereed: peer-reviewed
Rights: Published version (c)Wiley-Blackwell, available from DOI: 10.1111/j.1574-6968.2010.01989.x. The definitive version is available at www3.interscience.wiley.com
Citation: Trofimova, Y., Walker, G. and Rapoport, A. 2010. Anhydrobiosis in yeast: influence of calcium and magnesium ions on yeast resistance to dehydration–rehydration. FEMS Microbiology Letters. 308(1): pp.55-61. Available from DOI: 10.1111/j.1574-6968.2010.01989.x
Abstract: The influence of calcium and magnesium ions on resistance to dehydration in the yeast, Saccharomyces cerevisiae, was investigated. Magnesium ion availability directly influenced yeast cells' resistance to dehydration and, when additionally supplemented with calcium ions, this provided further significant increase of yeast resistance to dehydration. Gradual rehydration of dry yeast cells in water vapour indicated that both magnesium and calcium may be important for the stabilization of yeast cell membranes. In particular, calcium ions were shown for the first time to increase the resistance of yeast cells to dehydration in stress-sensitive cultures from exponential growth phases. It is concluded that magnesium and calcium ion supplementations in nutrient media may increase the dehydration stress tolerance of S. cerevisiae cells significantly, and this finding is important for the production of active dry yeast preparations for food and fermentation industries.
URI: http://hdl.handle.net/10373/533
ISSN: 0378-1097
Appears in Collections:Science Engineering & Technology Collection

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