High light induces species specific changes in the membrane lipid composition of Chlorella
| Autor: | Janka Widzgowski, Ulrich Schurr, Alexander Vogel, Björn Usadel, Ladislav Nedbal, Lena Altrogge, Julia Pfaff, Christian Pfaff, Heiko Schoof |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
Galactolipid Light Chlorella 01 natural sciences Biochemistry 03 medical and health sciences Membrane Lipids Lipid biosynthesis RNA Ribosomal 18S Molecular Biology Phylogeny 030304 developmental biology 0303 health sciences biology Chemistry Endoplasmic reticulum Lipid metabolism Cell Biology biology.organism_classification Lipid Metabolism Chloroplast Oxygen Thylakoid Photoprotection ddc:540 010606 plant biology & botany |
| Zdroj: | Biochemical journal 477(13), 2543–2559 (2020). doi:10.1042/BCJ20200160 |
| DOI: | 10.1042/BCJ20200160 |
| Popis: | Algae have evolved several mechanisms to adjust to changing environmental conditions. To separate from their surroundings, algal cell membranes form a hydrophobic barrier that is critical for life. Thus, it is important to maintain or adjust the physical and biochemical properties of cell membranes which are exposed to environmental factors. Especially glycerolipids of thylakoid membranes, the site of photosynthesis and photoprotection within chloroplasts, are affected by different light conditions. Since little is known about membrane lipid remodeling upon different light treatments, we examined light induced alterations in the glycerolipid composition of the two Chlorella species, C. vulgaris and C. sorokiniana, which differ strongly in their ability to cope with different light intensities. Lipidomic analysis and isotopic labeling experiments revealed differences in the composition of their galactolipid species, although both species likely utilize galactolipid precursors originated from the endoplasmic reticulum. However, in silico research of de novo sequenced genomes and ortholog mapping of proteins putatively involved in lipid metabolism showed largely conserved lipid biosynthesis pathways suggesting species specific lipid remodeling mechanisms, which possibly have an impact on the response to different light conditions. |
| Databáze: | OpenAIRE |
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