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Thermotolerance in Saccharomyces cerevisiae is linked to resistance to anhydrobiosis

Paper ID Volume ID Publish Year Pages File Format Full-Text
34447 45026 2014 4 PDF Available
Title
Thermotolerance in Saccharomyces cerevisiae is linked to resistance to anhydrobiosis
Abstract

•New approach to study the mechanisms of anhydrobiosis in yeasts.•Comparison of main characteristics of mesophilic and thermotolerant yeast strains.•Thermotolerance in yeast correlates with their resistance to anhydrobiosis.•Thermotolerant yeast is resistant to dehydration also in the exponential growth phase.•Indication of industrial strains suitable for the production of dry active yeast preparations.

We have demonstrated that a thermotolerant yeast strain (Saccharomyces cerevisiae TS1) is much more resistant to dehydration–rehydration treatments than a mesophilic strain of S. cerevisiae. Yeast resistance to dehydration–rehydration was found to be similar in cells from exponential and stationary growth phases. Under controlled rehydration conditions involving gradual rehydration in water vapour, yeast cell viability was maintained at 90–95%. When S. cerevisiae TS1 cells were pre-grown at 37 °C and then dried, controlled rehydration lead to restoration of plasma membrane integrity, indicating important differences in cell envelope architechture of mesophilic and thermotolerant yeast strains. Comparison of such strains provides new insight into anhydrobiosis in eukaryotic cells.

Keywords
Yeast anhydrobiosis; Dehydration–rehydration; Thermotolerant yeast
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Thermotolerance in Saccharomyces cerevisiae is linked to resistance to anhydrobiosis
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Publisher
Database: Elsevier - ScienceDirect
Journal: Process Biochemistry - Volume 49, Issue 11, November 2014, Pages 1889–1892
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
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