ArticleBiochimica et biophysica acta
PSI-LHCI of Chlamydomonas reinhardtii: Increasing the absorption cross section without losing efficiency.
Article in Biochimica et biophysica acta. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 32 papers.
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32 citing papers in PubMed, 65 citations in OpenAlex.
- Structural insights into assembly and environmental adaptation of photosystem I from a lichen green alga.Nature communications · 2026Article
- Structural and spectral adaptation of the seagrass Posidonia oceanica photosystem I to seabed light.Nature communications · 2026Article
- Structural basis of diadinoxanthin-Chl a/b-binding proteins in the photosystem I supercomplex ofScience advances · 2026Article
- Thriving across seawater depths: How blue light shapes a large PSI supercomplex and specific photosynthetic traits in the seagrass Posidonia oceanica.Plant communications · 2026Article
- Excitation energy transfer and trapping in Photosystem I of the green alga Bryopsis corticulans.Photosynthesis research · 2025Article
- Photosynthetic capacity and pigment distribution of a siphonous green alga, Dichotomosiphon tuberosus.Photosynthesis research · 2025Article
- Purification and pigment analysis of diadinoxanthin-binding PSI-LHCI supercomplexes frommicroPublication biology · 2025Article
- Ultrafast energy quenching mechanism of LHCSR3-dependent photoprotection in Chlamydomonas.Nature communications · 2024Article
- Energetic robustness to large scale structural fluctuations in a photosynthetic supercomplex.Nature communications · 2023Article
- Spectral diversity of photosystem I from flowering plants.Photosynthesis research · 2023Article
- A kaleidoscope of photosynthetic antenna proteins and their emerging roles.Plant physiology · 2022Article
- Oxidative Stress- and Autophagy-Inducing Effects of PSI-LHCI fromBiotech (Basel (Switzerland)) · 2022Article
- Antenna arrangement and energy-transfer pathways of PSI-LHCI from the moss Physcomitrella patens.Cell discovery · 2021Article
- PSI of the Colonial AlgaPlant physiology · 2020Article
- Evolutionary divergence of photoprotection in the green algal lineage: a plant-like violaxanthin de-epoxidase enzyme activates the xanthophyll cycle in the green alga Chlorella vulgaris modulating photoprotection.The New phytologist · 2020Article
- Light-harvesting complexes access analogue emissive states in different environments.Chemical science · 2020Article
- Modelling excitation energy transfer and trapping in the filamentous cyanobacterium Anabaena variabilis PCC 7120.Photosynthesis research · 2020Article
- Excitation dynamics in Photosystem I trapped in TiOPhotosynthesis research · 2020Article
- Rational Design of Photo-Electrochemical Hybrid Devices Based on Graphene and Chlamydomonas reinhardtii Light-Harvesting Proteins.Scientific reports · 2020Article
- pH dependence, kinetics and light-harvesting regulation of nonphotochemical quenching inProceedings of the National Academy of Sciences of the United States of America · 2019Article
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7 authors at 1 institution in 1 country.
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Abstract
Photosystem I (PSI) is an essential component of photosynthetic membranes. Despite the high sequence and structural homologies, its absorption properties differ substantially in algae, plants and cyanobacteria. In particular it is characterized by the presence of low-energy chlorophylls (red forms), the number and the energy of which vary in different organisms. The PSI-LHCI (PSI-light harvesting complex I) complex of the green alga Chlamydomonas reinhardtii (C.r.) is significantly larger than that of plants, containing five additional light-harvesting complexes (together binding≈65 chlorophylls), and contains red forms with higher energy than plants. To understand how these differences influence excitation energy transfer and trapping in the system, we studied two PSI-LHCI C.r. particles, differing in antenna size and red-form content, using time-resolved fluorescence and compared them to plant PSI-LHCI. The excited state kinetics in C.r. shows the same average lifetime (50 ps) as in plants suggesting that the effect of antenna enlargement is compensated by higher energy red forms. The system equilibrates very fast, indicating that all Lhcas are well-connected, despite their long distance to the core. The differences between C.r. PSI-LHCI with and without Lhca2 and Lhca9 show that these Lhcas bind red forms, although not the red-most. The red-most forms are in (or functionally close to) other Lhcas and slow down the trapping, but hardly affect the quantum efficiency, which remains as high as 97% even in a complex that contains 235 chlorophylls.
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