Light-Dependent Ethanol Assimilation By Model Red Microaga Galdieria sulphuraria
Bolychevtseva, Y. V.; Stadnichuk, I. N.
10.1101/2024.11.22.624789 bioRxivShow abstract
The effect of ethanol on the red thermoacidophilic microalga Galdieria sulphuraria, capable of hemo- and photoheterotrophic growth, was studied. It was found that G. sulphuraria failed to grow and assimilate ethanol when kept in the dark, in contrast to a wide range of organic compounds known to this alga. Light conditions, on the other hand, activated ethanol uptake from the growth medium and intensify microalgal growth. The known stress effect of ethyl alcohol can be seen in the short-term increase in cellular respiration in the dark and its sustained increase throughout the growth period of G. sulphuraria in the light. Ethanol-induced increase in cellular respiration precedes light activation of photosynthesis. The growth enhancement of ethanol-supplemented culture of G. sulphuraria compared to photoautotrophic culture is most likely due to the complete oxidation of ethanol during respiration to carbon dioxide and its use by chloroplasts as an additional intracellular substrate for photosynthesis. The absence of ethanol consumption in the dark and its metabolic uptake in the light indicate photoactivation of alcohol dehydrogenase and acetaldehyde dehydrogenase, two key sequential enzymes in the ethanol oxidation pathway.
Matching journals
The top 12 journals account for 50% of the predicted probability mass.
Similar papers in this journal
- Low-salinity medium for large-scale biomass production of the marine purple photosynthetic bacterium Rhodovulum sulfidophilum 94%
- Identification and selection of optimal reference genes for qPCR-based gene expression analysis in Fucus distichus under various abiotic stresses 94%
- Phenotypic heterogeneity in a batch culture of Chlamydomonas reinhardtii with different light tolerances. 94%
Similar papers in this journal
- Assessment of photosynthetic activity in dense microalgae cultures using oxygen production 95%
- Enhanced carotenoid photoprotection in Far-Red light acclimated Chroococcidiopsis thermalis 93%
- Stem canker caused by Phomopsis spp. induces changes in polyamine levels and chlorophyll fluorescence parameters in pecan leaves 93%
Similar papers in this journal
- Extracellular vesicles from saxitoxin-producing strains of the cyanobacterium Raphidiopsis raciborskii and investigation of their potential allelopathic effect 95%
- Genome-Scale Metabolic Model Accurately Predicts Fermentation of Glucose by Chromochloris zofingiensis 95%
- Accurate non-invasive quantification of astaxanthin content using hyperspectral images and machine learning 94%
Similar papers in this journal
- Differential proteomic analysis by SWATH-MS unravels the most dominant mechanisms underlying yeast adaptation to non-optimal temperatures under anaerobic conditions 93%
- Time-of-day dependent responses of cyanobacterial cellular viability against oxidative stress 93%
- Characterization and description of Faecalibacterium butyricigenerans sp. nov. and F. longum sp. nov., isolated from human faeces 92%
Similar papers in this journal
"Similar papers" are the closest papers from that journal in the model's embedding space. They show what the match is built on, but the ranking comes mostly from a classifier over the whole training set, not from these examples alone.