NOTE] Ectopic Expression of Sweet Potato MuS1 Increases Acquired Stress Tolerance and Fermentation Yield in Saccharomyces cerevisiae

Il-Sup Kim; Sun-Young Shin; Sun-Hyung Kim; Ho-Sung Yoon

doi:10.1007/s12275-012-2043-3

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NOTE] Ectopic Expression of Sweet Potato MuS1 Increases Acquired Stress Tolerance and Fermentation Yield in Saccharomyces cerevisiae: Il-Sup Kim ¹, Sun-Young Shin ¹, Sun-Hyung Kim ², Ho-Sung Yoon ¹; Journal of Microbiology 2012;50(3):544-546.
DOI: https://doi.org/10.1007/s12275-012-2043-3
Published online: June 30, 2012

¹Department of Biology, Kyungpook National University, Daegu 702-701, Republic of Korea, ²Department of Environmental Horticulture, University of Seoul, Seoul 130-743, Republic of Korea¹Department of Biology, Kyungpook National University, Daegu 702-701, Republic of Korea, ²Department of Environmental Horticulture, University of Seoul, Seoul 130-743, Republic of Korea

Corresponding author: Ho-Sung Yoon , Tel: +82-53-950-5348,

Received: 27 January 2012 • Accepted: 12 April 2012

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Abstract

The MuS1 gene is highly homologous to many stress-related proteins in plants. Here, we characterized whether a new candidate gene, MuS1, is related to multiple stress tolerance in yeast as it is in plants. Transgenic yeast strain expressing MuS1 were more resistant to hydrogen peroxide, menadione, high salinity, metals (i.e., cadmium, copper, iron, and zinc), ethanol, and lactic acid than wild-type strain transformed with a vector alone. In addition, the alcohol yield of the transgenic yeast strain was higher than that of the wild-type strain during the batch fermentation process. These results show that MuS1-expressing transgenic yeast strain exhibits enhanced alcohol yield as well as tolerance to abiotic stresses, especially metal stress.

Keywords: MuS1 gene;stress response;fermentation;Saccharomyces cerevisiae

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NOTE] Ectopic Expression of Sweet Potato MuS1 Increases Acquired Stress Tolerance and Fermentation Yield in Saccharomyces cerevisiae

J. Microbiol. 2012;50(3):544-546. Published online June 30, 2012

DOI: https://doi.org/10.1007/s12275-012-2043-3

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