RNA sequencing reveals metabolic and regulatory changes leading to more robust fermentation performance during short-term adaptation of Saccharomyces cerevisiae to lignocellulosic inhibitors
Abstract Background The limited tolerance of Saccharomyces cerevisiae to inhibitors is a major challenge in second-generation bioethanol production, and our understanding of the molecular mechanisms providing tolerance to inhibitor-rich lignocellulosic hydrolysates is incomplete. Short-term adaptati...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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BMC
2021-10-01
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| Series: | Biotechnology for Biofuels |
| Subjects: | |
| Online Access: | https://doi.org/10.1186/s13068-021-02049-y |
| _version_ | 1817979156345913344 |
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| author | Marlous van Dijk Peter Rugbjerg Yvonne Nygård Lisbeth Olsson |
| author_facet | Marlous van Dijk Peter Rugbjerg Yvonne Nygård Lisbeth Olsson |
| author_sort | Marlous van Dijk |
| collection | DOAJ |
| description | Abstract Background The limited tolerance of Saccharomyces cerevisiae to inhibitors is a major challenge in second-generation bioethanol production, and our understanding of the molecular mechanisms providing tolerance to inhibitor-rich lignocellulosic hydrolysates is incomplete. Short-term adaptation of the yeast in the presence of dilute hydrolysate can improve its robustness and productivity during subsequent fermentation. Results We utilized RNA sequencing to investigate differential gene expression in the industrial yeast strain CR01 during short-term adaptation, mimicking industrial conditions for cell propagation. In this first transcriptomic study of short-term adaption of S. cerevisiae to lignocellulosic hydrolysate, we found that cultures respond by fine-tuned up- and down-regulation of a subset of general stress response genes. Furthermore, time-resolved RNA sequencing allowed for identification of genes that were differentially expressed at 2 or more sampling points, revealing the importance of oxidative stress response, thiamin and biotin biosynthesis. furan-aldehyde reductases and specific drug:H+ antiporters, as well as the down-regulation of certain transporter genes. Conclusions These findings provide a better understanding of the molecular mechanisms governing short-term adaptation of S. cerevisiae to lignocellulosic hydrolysate, and suggest new genetic targets for improving fermentation robustness. |
| first_indexed | 2024-04-13T22:39:07Z |
| format | Article |
| id | doaj.art-a8217dd584174ba097328bf12fe728be |
| institution | Directory Open Access Journal |
| issn | 1754-6834 |
| language | English |
| last_indexed | 2024-04-13T22:39:07Z |
| publishDate | 2021-10-01 |
| publisher | BMC |
| record_format | Article |
| series | Biotechnology for Biofuels |
| spelling | doaj.art-a8217dd584174ba097328bf12fe728be2022-12-22T02:26:41ZengBMCBiotechnology for Biofuels1754-68342021-10-0114111610.1186/s13068-021-02049-yRNA sequencing reveals metabolic and regulatory changes leading to more robust fermentation performance during short-term adaptation of Saccharomyces cerevisiae to lignocellulosic inhibitorsMarlous van Dijk0Peter Rugbjerg1Yvonne Nygård2Lisbeth Olsson3Department of Biology and Bioengineering, Division of Industrial Biotechnology, Chalmers University of TechnologyDepartment of Biology and Bioengineering, Division of Industrial Biotechnology, Chalmers University of TechnologyDepartment of Biology and Bioengineering, Division of Industrial Biotechnology, Chalmers University of TechnologyDepartment of Biology and Bioengineering, Division of Industrial Biotechnology, Chalmers University of TechnologyAbstract Background The limited tolerance of Saccharomyces cerevisiae to inhibitors is a major challenge in second-generation bioethanol production, and our understanding of the molecular mechanisms providing tolerance to inhibitor-rich lignocellulosic hydrolysates is incomplete. Short-term adaptation of the yeast in the presence of dilute hydrolysate can improve its robustness and productivity during subsequent fermentation. Results We utilized RNA sequencing to investigate differential gene expression in the industrial yeast strain CR01 during short-term adaptation, mimicking industrial conditions for cell propagation. In this first transcriptomic study of short-term adaption of S. cerevisiae to lignocellulosic hydrolysate, we found that cultures respond by fine-tuned up- and down-regulation of a subset of general stress response genes. Furthermore, time-resolved RNA sequencing allowed for identification of genes that were differentially expressed at 2 or more sampling points, revealing the importance of oxidative stress response, thiamin and biotin biosynthesis. furan-aldehyde reductases and specific drug:H+ antiporters, as well as the down-regulation of certain transporter genes. Conclusions These findings provide a better understanding of the molecular mechanisms governing short-term adaptation of S. cerevisiae to lignocellulosic hydrolysate, and suggest new genetic targets for improving fermentation robustness.https://doi.org/10.1186/s13068-021-02049-yShort-term adaptationInhibitor stressTranscriptomicsYHK8Industrial yeast strain |
| spellingShingle | Marlous van Dijk Peter Rugbjerg Yvonne Nygård Lisbeth Olsson RNA sequencing reveals metabolic and regulatory changes leading to more robust fermentation performance during short-term adaptation of Saccharomyces cerevisiae to lignocellulosic inhibitors Biotechnology for Biofuels Short-term adaptation Inhibitor stress Transcriptomics YHK8 Industrial yeast strain |
| title | RNA sequencing reveals metabolic and regulatory changes leading to more robust fermentation performance during short-term adaptation of Saccharomyces cerevisiae to lignocellulosic inhibitors |
| title_full | RNA sequencing reveals metabolic and regulatory changes leading to more robust fermentation performance during short-term adaptation of Saccharomyces cerevisiae to lignocellulosic inhibitors |
| title_fullStr | RNA sequencing reveals metabolic and regulatory changes leading to more robust fermentation performance during short-term adaptation of Saccharomyces cerevisiae to lignocellulosic inhibitors |
| title_full_unstemmed | RNA sequencing reveals metabolic and regulatory changes leading to more robust fermentation performance during short-term adaptation of Saccharomyces cerevisiae to lignocellulosic inhibitors |
| title_short | RNA sequencing reveals metabolic and regulatory changes leading to more robust fermentation performance during short-term adaptation of Saccharomyces cerevisiae to lignocellulosic inhibitors |
| title_sort | rna sequencing reveals metabolic and regulatory changes leading to more robust fermentation performance during short term adaptation of saccharomyces cerevisiae to lignocellulosic inhibitors |
| topic | Short-term adaptation Inhibitor stress Transcriptomics YHK8 Industrial yeast strain |
| url | https://doi.org/10.1186/s13068-021-02049-y |
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