Encapsulation-Induced Stress Helps Saccharomyces cerevisiae Resist Convertible Lignocellulose Derived Inhibitors
Encapsulation-Induced Stress Helps Saccharomyces cerevisiae Resist Convertible Lignocellulose Derived Inhibitors
The ability of macroencapsulated Saccharomyces cerevisiae CBS8066 to withstand readily and not readily in situ convertible lignocellulose-derived inhibitors was investigated in anaerobic batch cultivations. It was shown that encapsulation increased the tolerance against readily convertible furan aldehyde inhibitors and to dilute acid spruce hydrolysate, but not to organic acid inhibitors that cannot be metabolized anaerobically. Gene expression analysis showed that the protective effect arising from the encapsulation is evident also on the transcriptome level, as the expression of the stress-related genes YAP1, ATR1 and FLR1 was induced upon encapsulation. The transcript levels were increased due to encapsulation already in the medium without added inhibitors, indicating that the cells sensed low stress level arising from the encapsulation itself. We present a model, where the stress response is induced by nutrient limitation, that this helps the cells to cope with the increased stress added by a toxic medium, and that superficial cells in the capsules degrade convertible inhibitors, alleviating the inhibition for the cells deeper in the capsule.
- University of Borås Sweden
- Chalmers University of Technology Sweden
carboxylic acids, Saccharomyces cerevisiae Proteins, q-PCR, Organic Anion Transporters, Saccharomyces cerevisiae, Lignin, Article, lignocellulosic hydrolysate, Stress, Physiological, Gene Expression Regulation, Fungal, inhibitors, lignocellulosic hydrolysate; ethanol; furfural; HMF (5-hydroxymethyl furfural); carboxylic acids; encapsulation; <em>Saccharomyces cerevisiae</em>; biofuel; inhibitors; q-PCR, Membrane Transport Proteins, furfural, Other Industrial Biotechnology, Cells, Immobilized, Resource Recovery, Annan industriell bioteknik, encapsulation, biofuel, ethanol, HMF (5-hydroxymethyl furfural), Transcription Factors
carboxylic acids, Saccharomyces cerevisiae Proteins, q-PCR, Organic Anion Transporters, Saccharomyces cerevisiae, Lignin, Article, lignocellulosic hydrolysate, Stress, Physiological, Gene Expression Regulation, Fungal, inhibitors, lignocellulosic hydrolysate; ethanol; furfural; HMF (5-hydroxymethyl furfural); carboxylic acids; encapsulation; <em>Saccharomyces cerevisiae</em>; biofuel; inhibitors; q-PCR, Membrane Transport Proteins, furfural, Other Industrial Biotechnology, Cells, Immobilized, Resource Recovery, Annan industriell bioteknik, encapsulation, biofuel, ethanol, HMF (5-hydroxymethyl furfural), Transcription Factors
3 Research products, page 1 of 1
- 2017IsRelatedTo
- 2017IsRelatedTo
- 2017IsRelatedTo
citations This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).25 popularity This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.Top 10% influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).Top 10% impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.Top 10%
