Forced expression of FLO11 confers pellicle-forming ability and furfural tolerance on Saccharomyces cerevisiae in ethanol production.

Biosci Biotechnol Biochem

a Division of Biotechnology, Interdisciplinary Graduate School of Medicine and Engineering , University of Yamanashi, 4-3-11 Takeda, Kofu, Yamanashi, 400-8511 , Japan.

Published: August 2015

AI Article Synopsis

  • A plasmid was created to express FLO11, a gene that codes for a glycoprotein in yeast, S. cerevisiae, using a constant promoter.
  • This plasmid allowed a non-pellicle-forming industrial strain of the yeast to form a pellicle (a surface film) in a glucose-based liquid medium.
  • The cells with the new capability showed increased resistance to furfural, a toxic compound that can hinder ethanol production from plant materials.

Article Abstract

We constructed a plasmid that expresses FLO11 encoding a cell surface glycoprotein of Saccharomyces cerevisiae under the control of a constitutive promoter. This plasmid conferred pellicle-forming ability on the non-pellicle-forming industrial strain of S. cerevisiae at the air-liquid interface of the glucose-containing liquid medium. The induced pellicle-forming cells exhibited tolerance to furfural, which is a key toxin in lignocellulosic hydrolysates, in ethanol production.

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http://dx.doi.org/10.1080/09168451.2014.895660DOI Listing

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