ArticlePhotosynthesis research2012
Modulation of the multilamellar membrane organization and of the chiral macrodomains in the diatom Phaeodactylum tricornutum revealed by small-angle neutron scattering and circular dichroism spectroscopy.
Article in Photosynthesis research, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.
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18 citing papers in PubMed, 33 citations in OpenAlex.
- Neutrons reveal the dynamics of leaf thylakoids in living plants.Scientific reports · 2025Article
- Influence of reduced amounts of sulfoquinovosyl diacylglycerol on the thylakoid membranes of the diatomPhotosynthetica · 2023Article
- Editorial.Photosynthetica · 2023Article
- Small-Angle Neutron Scattering for Studying Lipid Bilayer Membranes.Biomolecules · 2022Review
- Neutron scattering in photosynthesis research: recent advances and perspectives for testing crop plants.Photosynthesis research · 2021Article
- Salt Stress Induces Paramylon Accumulation and Fine-Tuning of the Macro-Organization of Thylakoid Membranes inFrontiers in plant science · 2021Article
- Small-Angle X-Ray and Neutron Scattering on Photosynthetic Membranes.Frontiers in chemistry · 2021Review
- Article
- Ultrastructural modeling of small angle scattering from photosynthetic membranes.Scientific reports · 2019Article
- Circular spectropolarimetric sensing of higher plant and algal chloroplast structural variations.Photosynthesis research · 2019Article
- Influence of Chemically Disrupted Photosynthesis on Cyanobacterial Thylakoid Dynamics in Synechocystis sp. PCC 6803.Scientific reports · 2019Article
- Revealing the Dynamics of Thylakoid Membranes in Living Cyanobacterial Cells.Scientific reports · 2016Article
- Self-assembly and structural-functional flexibility of oxygenic photosynthetic machineries: personal perspectives.Photosynthesis research · 2016Review
- Phycobilisome Mobility and Its Role in the Regulation of Light Harvesting in Red Algae.Plant physiology · 2014Article
- Chloroplast remodeling during state transitions in Chlamydomonas reinhardtii as revealed by noninvasive techniques in vivo.Proceedings of the National Academy of Sciences of the United States of America · 2014Article
- Mobility of photosynthetic proteins.Photosynthesis research · 2013Review
- Kinetics of structural reorganizations in multilamellar photosynthetic membranes monitored by small-angle neutron scattering.The European physical journal. E, Soft matter · 2013Article
- Organization and flexibility of cyanobacterial thylakoid membranes examined by neutron scattering.The Journal of biological chemistry · 2013Article
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Authors and funding
11 authors at 5 institutions in 2 countries.
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No grant is acknowledged in the PubMed record.
Abstract
Diatoms possess effective photoprotection mechanisms, which may involve reorganizations in the photosynthetic machinery. We have shown earlier, by using circular dichroism (CD) spectroscopy, that in Phaeodactylum tricornutum the pigment-protein complexes are arranged into chiral macrodomains, which have been proposed to be associated with the multilamellar organization of the thylakoid membranes and shown to be capable of undergoing light-induced reversible reorganizations (Szabó et al. Photosynth Res 95:237, 2008). Recently, by using small-angle neutron scattering (SANS) on the same algal cells we have determined the repeat distances and revealed reversible light-induced reorganizations in the lamellar order of thylakoids (Nagy et al. Biochem J 436:225, 2011). In this study, we show that in moderately heat-treated samples, the weakening of the lamellar order is accompanied by the diminishment of the psi-type CD signal associated with the long-range chiral order of the chromophores (psi, polymer or salt-induced). Further, we show that the light-induced reversible increase in the psi-type CD is associated with swelling in the membrane system, with magnitudes larger in high light than in low light. In contrast, shrinkage of the membrane system, induced by sorbitol, brings about a decrease in the psi-type CD signal; this shrinkage also diminishes the non-photochemical quenching capability of the cells. These data shed light on the origin of the psi-type CD signal, and confirm that both CD spectroscopy and SANS provide valuable information on the macro-organization of the thylakoid membranes and their dynamic properties; these parameters are evidently of interest with regard to the photoprotection in whole algal cells.
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