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Acetic acid stress in budding yeast: From molecular mechanisms to applications

, Maurizio Bettiga
Published: 17 May 2021
 in Yeast
Yeast , Volume 38, pp 391-400; doi:10.1002/yea.3651

Abstract: Acetic acid stress represents a frequent challenge to counteract for yeast cells under several environmental conditions and industrial bioprocesses. The molecular mechanisms underlying its response have been mostly elucidated in the budding yeast Saccharomyces cerevisiae, where acetic acid can be either a physiological substrate or a stressor. This review will focus on acetic acid stress and its response in the context of cellular transport, pH homeostasis, metabolism and stress-signalling pathways. This information has been integrated with the results obtained by multi-omics, synthetic biology and metabolic engineering approaches aimed to identify major cellular players involved in acetic acid tolerance. In the production of biofuels and renewable chemicals from lignocellulosic biomass, the improvement of acetic acid tolerance is a key factor. In this view, how this knowledge could be used to contribute to the development and competitiveness of yeast cell factories for sustainable applications will be also discussed.
Keywords: acetic acid stress / cell factory / industrial biotechnology / Saccharomyces cerevisiae / signalling / yeast

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