Saccharomyces cerevisiae
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA118051 | ENA |
REPOSITORIES: ENA
Similar Datasets
Project description:Resistance of Saccharomyces cerevisiae to high furfural concentration is based on NADPH-dependent reduction by at least two oxireductases. Biofuels derived from lignocellulosic biomass hold promises for a sustainable fuel economy, but several problems hamper their economical feasibility. One important problem is the presence of toxic compounds in processed lignocellulosic hydrolysates with furfural as a key toxin. While Saccharomyces cerevisiae has some intrinsic ability to reduce furfural to the less toxic furfuryl alcohol, higher resistance is necessary for process conditions. By comparing an evolved, furfural resistant strain and its parent in micro-aerobic, glucose-limited chemostats at increasing furfural challenge, we elucidate key mechanism and the molecular basis of both natural and high-level furfural resistance. At lower furfural concentrations, NADH-dependent oxireductases are the main defence mechanism. At concentrations above 15 mM, however, [1-13C]-flux and global array-based transcript analysis demonstrated that the NADPH-generating flux through pentose-phosphate pathway increases and that NADPH-dependent oxireductases became the major resistance mechanism. The transcript analysis further revealed that iron transmembrane transport is up-regulated in response to furfural. While these responses occur in both strains, high-level resistance in the evolved strain was based on strong induction of ADH7, the uncharacterised ORF YKL071W and 4 further, likely NADPH-dependent oxireductases. By overexpressing the ADH7 gene and the ORF YKL071W, we inverse engineered significantly increased furfural resistance in the parent strain, thereby demonstrating these two enzymes to be key elements of the resistance phenotype.
2009-09-29 | GSE18314 | GEO
Project description:Resistance of Saccharomyces cerevisiae to high furfural concentration is based on NADPH-dependent reduction by at least two oxireductases. Biofuels derived from lignocellulosic biomass hold promises for a sustainable fuel economy, but several problems hamper their economical feasibility. One important problem is the presence of toxic compounds in processed lignocellulosic hydrolysates with furfural as a key toxin. While Saccharomyces cerevisiae has some intrinsic ability to reduce furfural to the less toxic furfuryl alcohol, higher resistance is necessary for process conditions. By comparing an evolved, furfural resistant strain and its parent in micro-aerobic, glucose-limited chemostats at increasing furfural challenge, we elucidate key mechanism and the molecular basis of both natural and high-level furfural resistance. At lower furfural concentrations, NADH-dependent oxireductases are the main defence mechanism. At concentrations above 15 mM, however, [1-13C]-flux and global array-based transcript analysis demonstrated that the NADPH-generating flux through pentose-phosphate pathway increases and that NADPH-dependent oxireductases became the major resistance mechanism. The transcript analysis further revealed that iron transmembrane transport is up-regulated in response to furfural. While these responses occur in both strains, high-level resistance in the evolved strain was based on strong induction of ADH7, the uncharacterised ORF YKL071W and 4 further, likely NADPH-dependent oxireductases. By overexpressing the ADH7 gene and the ORF YKL071W, we inverse engineered significantly increased furfural resistance in the parent strain, thereby demonstrating these two enzymes to be key elements of the resistance phenotype. Experiment Overall Design: RNA levels were measured in glucose limited, micro-aerobic chemostat cultures with different concentrations of the growth inhibitor furfural. Two strains were compared: TMB3400-FT30-3 is a strain that has been evolutionary adapted to withstand high furfural concentrations. TMB3400 is its less resistant parent. Number of biological replicates: 2-3.
2009-10-03 | E-GEOD-18314 | biostudies-arrayexpress
Project description:Furfural is a key inhibitor in S. cerevisiae fermentation causing serious economic loss. To understand the toxic mechanisms of furfural-induced genomic instability and phenotypic evolution, we mapped chromosomal alterations in 21 furfural-treated yeast strains by whole genome SNP microarrays at a resolution about 1kb.
2017-10-13 | GSE104879 | GEO
Project description:Furfural is a key inhibitor in S. cerevisiae fermentation causing serious economic loss. To disclose of the recombinational DNA lesions induced by furfural, we analyzed 19 JSC25-derived sectored colonies using chromosome IV SNP-specific microarrays. The parent diploid S. cerevisiae strain JSC25 (constructed by crossing two haploid strains isogenic W303-1A and YJM789) was homologous for ade2-1 alleles. One copy of gene SUP4-o, an ochre-suppressing tRNA, was inserted at the end of right arm of chromosome IV. Under normal conditions, the colony color of JSC25 is pink. A crossover event occurred on the right arm of chromosome IV at the first cell cycle would result in a white/red sectored colony on solid plate.
2017-10-13 | GSE104880 | GEO
Project description:HMF and furfural were pulse added to xylose-utilizing Saccharomyces cerevisiae during either the glucose consumption phase or the xylose consumption phase. Transcriptome samples were collected before and one hour after pulsing of inhibitors.
2013-11-25 | GSE50182 | GEO
Project description:The data explore the transcriptional response of strain LY180 and the furfural-resistant derivative EMFR9 to 0.5 g/L furfural LY180 and EMFR9 and differences in their expression profiles are described in Miller, E. N., L. R. Jarboe, L. P. Yomano, S. W. York, K. T. Shanmugam, and L. O. Ingram. 2009. Silencing of NADPH-dependent oxidoreductase genes (yqhD and dkgA) in furfural-resistant ethanologenic Escherichia coli. Appl Environ Microbiol 75:4315-23. The response of LY180 to furfural is described in Miller, E. N., L. R. Jarboe, P. C. Turner, P. Pharkya, L. P. Yomano, S. W. York, D. Nunn, K. T. Shanmugam, and L. O. Ingram. 2009. Furfural Inhibits Growth by Limiting Sulfur Assimilation in Ethanologenic Escherichia coli strain LY180. Appl Environ Microbiol., 2009.
2009-08-25 | GSE17786 | GEO
Project description:This SuperSeries is composed of the following subset Series: GSE34808: A transcriptomic analysis of the response of Saccharomyces cerevisiae to increases in NADPH oxidation [2009] GSE34809: A transcriptomic analysis of the response of Saccharomyces cerevisiae to increases in NADPH oxidation [2010] Refer to individual Series
2012-03-31 | E-GEOD-34810 | biostudies-arrayexpress
Project description:The data explore the transcriptional response of strain LY180 and the furfural-resistant derivative EMFR9 to 0.5 g/L furfural LY180 and EMFR9 and differences in their expression profiles are described in Miller, E. N., L. R. Jarboe, L. P. Yomano, S. W. York, K. T. Shanmugam, and L. O. Ingram. 2009. Silencing of NADPH-dependent oxidoreductase genes (yqhD and dkgA) in furfural-resistant ethanologenic Escherichia coli. Appl Environ Microbiol 75:4315-23. The response of LY180 to furfural is described in Miller, E. N., L. R. Jarboe, P. C. Turner, P. Pharkya, L. P. Yomano, S. W. York, D. Nunn, K. T. Shanmugam, and L. O. Ingram. 2009. Furfural Inhibits Growth by Limiting Sulfur Assimilation in Ethanologenic Escherichia coli strain LY180. Appl Environ Microbiol., 2009. Total RNA was prepared from cultures of LY180 and EMFR9 immediately before and 15 min after addition of furfural to 0.5 g/L. The Nimblegen TI83333 chip measures expression of 4,237 genes, with 5 replicates, and 18 probes average per gene. Data from replicate 1 (OID 8641) and replicate 2 (OID 14117) was analyzed independently.
2010-05-06 | E-GEOD-17786 | biostudies-arrayexpress
Project description:HMF and furfural were pulse added to xylose-utilizing Saccharomyces cerevisiae during either the glucose consumption phase or the xylose consumption phase. Transcriptome samples were collected before and one hour after pulsing of inhibitors. Three biological replicates from each conditions analyzed.
2013-11-25 | E-GEOD-50182 | biostudies-arrayexpress
Project description:Saccharomyces cerevisiae stress responses to HMF and furfural
| PRJNA177843 | ENA