Ontology highlight
ABSTRACT:
PROVIDER: PRJNA744718 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR15068662_1.fastq.gz | Fastqsanger.gz | |||
| SRR15068662_2.fastq.gz | Fastqsanger.gz | |||
| SRR15068663_1.fastq.gz | Fastqsanger.gz | |||
| SRR15068663_2.fastq.gz | Fastqsanger.gz | |||
| SRR15068664_1.fastq.gz | Fastqsanger.gz |
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Project description:Citrus grandis seedlings were irrigated with nutrient solutions containing two levels of aluminium (Al; 0 mM and 1.2 mM AlCl3•6H2O) and two levels of phosphorus (P; 0 μM and 200 μM KH2PO4) combinations for 18 weeks, respectively. The proteome profile of Citrus root submitted to different P-Al interactions were investigated by using isobaric tags for relative and absolute quantification (iTRAQ).
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Project description:Clostridium acetobutylicum is characterized by its acetone-butanol (AB) fermentation which <br>can be reproducibly established under continuous grow conditions in a chemostat. <br>At pH 5.7 cells show typical acidogenic metabolism and mainly produce the acids <br>acetate and butyrate. After lowering and further control the external pH at 4.5 <br>the exponentially growing cells switch towards stable solvent production with the <br>dominating fermentation products acetone and butanol. <br>Here we present a comprehensive comparison of proteome and transcriptome <br>data of continuously growing cells of C. acetobutylicum in a chemostat culture <br>under phosphate limitation at pH 5.7 (acidogenesis) and pH 4.5 (solventogenesis).
2010-11-10 | E-MEXP-2503 | biostudies-arrayexpress
Project description:Solventogenic Clostridium species ferment carbohydrates to acetone, butanol and ethanol which are well-known next-generation biofuels. However, repeated subculture of or continuous fermentation by Clostridium often decreases and eventually terminates the solvent production and spore formation, which is a process called strain degeneration. Supplementation of CaCO3 to fermentation medium could partially recover metabolism of degenerated strain by more than 50% increase of cell growth and solvent production. The transcriptome profile of Clostridium beijerinckii NCIMB 8052 (DG-8052) and its response to CaCO3 treatment were analysed by microarray. Since fermentation by C. beijerinckii NCIMB 8052 is a biphasic process, gene expressions of two fermentations were compared at each stage, i.e. 12h and 24h fermentation time representing acidogenic phase and solventogenic phase, respectively. This study examined expression of 5168 genes capturing 98.6% of the C. beijerinckii NCIMB 8052 genome. With the addition of CaCO3, DG-8052 had 565 and 916 genes significantly up-regulated at acidogenic phase and solventogenic phase, respectively. According to the enrichment analysis of pathway and Gene Ontology terms and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway, these genes were significantly overrepresented in cellular functions such as Amino acid transport and metabolism, organic acid biosynthetic process, bacteria chemotaxis and defense mechanisms. On the other hand, there were 704 and 1044 genes significantly down-regulated at acidogenic phase and solventogenic phase, respectively. These repressed genes were mainly enriched in functions such as ion transmembrane transport, ATP synthesis, oxidative phosphorylation.
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