Ontology highlight
ABSTRACT:
PROVIDER: PRJNA1311105 | ENA |
REPOSITORIES: ENA
Similar Datasets
Project description:Here, we transferred GmDof4 from soybean (Glycine max), a transcription factor affecting content of lipid in Arabidopsis, into C. ellipsoidea and found that the expression of GmDof4 significantly enhanced the lipid content by maximum 57.21%, shifted the content of different fatty acids, but did not affect the growth of the host cells. Using the Solexa/Illumina-based RNA-Seq analysis, we found expression of GmDof4 significantly regulates 1,076 genes, of which 754 genes were up-regulated and 322 genes were down-regulated, under mixotrophic culture. This study provides a new way to improve the lipid of microalgae.
2014-04-16 | GSE37473 | GEO
Project description:Diatoms are prominent marine microalgae, interesting not only from an ecological point of view, but also for their possible use for biotechnology applications. They can be cultivated in phototrophic conditions, using sunlight as the only energy source. Some diatoms, however, can also grow in mixotrophic mode, where both light and external reduced carbon contribute to biomass accumulation. In this study, we investigated the consequences of mixotrophy on the growth and metabolism of the pennate diatom Phaeodactylum tricornutum, using glycerol as a source of reduced carbon. Transcriptomic, metabolomic and physiological data indicate that glycerol affects the central-carbon, carbon-storage and lipid metabolism of the diatom. In particular, glycerol addition mimics some typical responses of nitrogen limitation on lipid metabolism at the level of TAG accumulation and fatty acid composition. However, this compound does not diminish photosynthetic activity and cell growth, at variance with nutrient limitation, revealing essential aspects of the metabolic flexibility of these microalgae and suggesting possible biotechnological applications of mixotrophy.
2017-03-31 | GSE91004 | GEO
Project description:Volatile fatty acids found in effluents of the dark fermentation of biowastes can be used for mixotrophic growth of microalgae, improving productivity and reducing the cost of the feedstock. Microalgae can use the acetate in the effluents very well, but butyrate is poorly assimilated and can inhibit growth above 1 gC.L-1. The non-photosynthetic chlorophyte alga Polytomella sp. SAG 198.80 was found to be able to assimilate butyrate fast. To decipher the metabolic pathways implicated in butyrate assimilation, a large-scale differential proteomics study was developed comparing Polytomella sp. cells grown on acetate and butyrate at 1 gC.L-1.
2022-11-02 | PXD035155 | Pride
Project description:To investigate the mechanism by which the microalgae-yeast co-culture system promotes wastewater denitrification. We concluded that microalgae and yeast exhibit a mutually beneficial relationship in the co-culture system. Microalgae nitrogen metabolism can be influenced by both miRNA and mRNA, and the presence of yeast stimulates gene expression in microalgae.
2023-07-12 | GSE231399 | GEO
Project description:Here, we transferred GmDof4 from soybean (Glycine max), a transcription factor affecting content of lipid in Arabidopsis, into C. ellipsoidea and found that the expression of GmDof4 significantly enhanced the lipid content by maximum 57.21%, shifted the content of different fatty acids, but did not affect the growth of the host cells. Using the Solexa/Illumina-based RNA-Seq analysis, we found expression of GmDof4 significantly regulates 1,076 genes, of which 754 genes were up-regulated and 322 genes were down-regulated, under mixotrophic culture. This study provides a new way to improve the lipid of microalgae. The GmDof4 transgenic strain Dof4-1 and control (pCK transgenic line CK-1) were cultured in liquid antibiotic-free Endo medium at 25M-bM-^DM-^C under illumination (100 M-NM-<mol photons m-2 s-1) for 120 h. Cells at a concentration of approximately 1M-CM-^W 10^7 cells/mL were collected for library construction and sequencing using Illumina GAIIx.
2014-04-16 | E-GEOD-37473 | biostudies-arrayexpress
Project description:Impact of dark fermentation effluent on microalgae growth in mixotrophic conditions
| PRJNA1107359 | ENA
Project description:Although it is well established the seasonal effect of the photoperiod over the transcriptional expression patterns in plants, this effect has not been studied in microalgae. Here we fill the gap using the model microalgae Ostreococcus tauri.
2023-08-31 | GSE155535 | GEO
Project description:Microalgae are natural biocatalysts of Hydrogen. Their ability to convert solar energy to valuable compounds with minimal ecological footprint potentially puts them as significant contributors to clean energy transition. Currently, this process, although promising, is not scalable because it is limited to oxygen-free conditions and is short-lived due to electron loss to other processes, mainly carbon fixation. Here we show that a strain, defected in thylakoid proton gradient regulation, ∆pgr5, bypasses both challenges simultaneously, leading to a prolonged 12-day hydrogen production under ambient mixotrophic conditions in a one-liter set-up. We report that ∆pgr5 possess a repressed ability to fixate carbon and this limitation is counterbalanced by an enhanced chloroplast-mitochondrion energetic exchange. This unique physiology supported the simplistic, yet robust and scalable hydrogen production capability of ∆pgr5.
2022-11-09 | PXD028843 | Pride