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Altered sterol composition renders yeast thermotolerant

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Science  03 Oct 2014:
Vol. 346, Issue 6205, pp. 75-78
DOI: 10.1126/science.1258137

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Tricks for boosting yeast's ethanol yields

To become a widely used source of fuel, widespread industrial production of ethanol using yeast needs to be simple and efficient. However, two conditions ideal for boosting production—tolerance of higher temperatures and high concentrations of ethanol—have been limiting (see the Perspective by Cheng and Kao). Now, Caspeta et al. have used adaptive laboratory evolution to find yeast strains that can tolerate high temperatures and Lam et al. have identified a route to improve yeast's resistance to high concentrations of ethanol.

Science, this issue p. 75, p. 71; see also p. 35