scholarly journals Association of Photosystem I and Light-Harvesting Complex II during State Transitions

2007 ◽  
pp. 41-46 ◽  
Author(s):  
Egbert J. Boekema ◽  
Roman Kouřil ◽  
Jan P. Dekker ◽  
Poul Erik Jensen
Keyword(s):  
Photosystem I ◽  
Light Harvesting ◽  
State Transitions ◽  
Light Harvesting Complex ◽  
Complex Ii ◽  
Light Harvesting Complex Ii

Macroorganisation and flexibility of thylakoid membranes

2019 ◽  
Vol 476 (20) ◽  
pp. 2981-3018 ◽  
Author(s):  
Petar H. Lambrev ◽  
Parveen Akhtar
Keyword(s):  
Light Harvesting ◽  
Current Knowledge ◽  
Three Dimensional ◽  
Photosynthetic Apparatus ◽  
Dynamic Responses ◽  
State Transitions ◽  
Photochemical Quenching ◽  
Light Harvesting Complex ◽  
Complex Ii ◽  
Light Harvesting Complex Ii

Abstract The light reactions of photosynthesis are hosted and regulated by the chloroplast thylakoid membrane (TM) — the central structural component of the photosynthetic apparatus of plants and algae. The two-dimensional and three-dimensional arrangement of the lipid–protein assemblies, aka macroorganisation, and its dynamic responses to the fluctuating physiological environment, aka flexibility, are the subject of this review. An emphasis is given on the information obtainable by spectroscopic approaches, especially circular dichroism (CD). We briefly summarise the current knowledge of the composition and three-dimensional architecture of the granal TMs in plants and the supramolecular organisation of Photosystem II and light-harvesting complex II therein. We next acquaint the non-specialist reader with the fundamentals of CD spectroscopy, recent advances such as anisotropic CD, and applications for studying the structure and macroorganisation of photosynthetic complexes and membranes. Special attention is given to the structural and functional flexibility of light-harvesting complex II in vitro as revealed by CD and fluorescence spectroscopy. We give an account of the dynamic changes in membrane macroorganisation associated with the light-adaptation of the photosynthetic apparatus and the regulation of the excitation energy flow by state transitions and non-photochemical quenching.

scholarly journals Isolation and characterization of a large photosystem I–light‐harvesting complex II supercomplex with an additional Lhca1–a4 dimer in Arabidopsis

2020 ◽  
Vol 102 (2) ◽  
pp. 398-409 ◽  
Author(s):  
Aurélie Crepin ◽  
Zuzana Kučerová ◽  
Artemis Kosta ◽  
Eric Durand ◽  
Stefano Caffarri
Keyword(s):  
Photosystem I ◽  
Light Harvesting ◽  
Light Harvesting Complex ◽  
Complex Ii ◽  
Isolation And Characterization ◽  
Light Harvesting Complex Ii

scholarly journals Phosphorylation of the Lhcb2 isoform of Light Harvesting Complex II is central to state transitions

2015 ◽  
pp. pp.01498.2015 ◽  
Author(s):  
Paolo Longoni ◽  
Damien Douchi ◽  
Federica Cariti ◽  
Geoffrey Fucile ◽  
Michel Goldschmidt-Clermont
Keyword(s):  
Light Harvesting ◽  
State Transitions ◽  
Light Harvesting Complex ◽  
Complex Ii ◽  
Light Harvesting Complex Ii

scholarly journals Steady-State Phosphorylation of Light-Harvesting Complex II Proteins Preserves Photosystem I under Fluctuating White Light

2012 ◽  
Vol 160 (4) ◽  
pp. 1896-1910 ◽  
Author(s):  
Michele Grieco ◽  
Mikko Tikkanen ◽  
Virpi Paakkarinen ◽  
Saijaliisa Kangasjärvi ◽  
Eva-Mari Aro
Keyword(s):  
Steady State ◽  
Photosystem I ◽  
White Light ◽  
Light Harvesting ◽  
Light Harvesting Complex ◽  
Complex Ii ◽  
Light Harvesting Complex Ii

Kinetics and heterogeneity of energy transfer from light harvesting complex II to photosystem I in the supercomplex isolated from Arabidopsis

2017 ◽  
Vol 19 (13) ◽  
pp. 9210-9222 ◽  
Author(s):  
Stefano Santabarbara ◽  
Tania Tibiletti ◽  
William Remelli ◽  
Stefano Caffarri
Keyword(s):  
Energy Transfer ◽  
Photosystem I ◽  
Light Harvesting ◽  
Light Harvesting Complex ◽  
Complex Ii ◽  
Light Harvesting Complex Ii

Energy transfer from the LHCII when associated with the PSI–LHCI is heterogeneous and characterised by macroscopic transfer of ∼55 ns−1 and 15 ns−1, respectively.

Relationship between Changes in Ion Content of Leaves and Chlorophyll-Protein Composition in Cucumber under Cd and Pb Stress

1999 ◽  
Vol 54 (9-10) ◽  
pp. 746-753 ◽  
Author(s):  
Éva Sárvári ◽  
Ferenc Fodor ◽  
Edit Cseh ◽  
Anita Varga ◽  
Gyula Záray ◽  
...  
Keyword(s):  
Chlorophyll Content ◽  
Chlorophyll A ◽  
Photosystem I ◽  
Light Harvesting ◽  
Fluorescence Emission ◽  
Light Harvesting Complex ◽  
Complex Ii ◽  
Iron Deficient ◽  
Light Harvesting Complex Ii ◽  
Chlorophyll Protein

Hydroponically cultured cucumber plants supplied with 4 μᴍ Fe chelated either with EDTA or citrate and treated with Cd (10 μᴍ) and Pb (10, 50 μᴍ) from their one- or fourleaf stage were grown up to five-week-old age. The decrease in the chlorophyll content was the most pronounced in plants treated with Cd from a younger age, and in the case of Fecitrate. The chlorophyll a/b ratio of Cd stressed plants was also significantly lowered. In later treated plants the accumulation of chlorophyll was inhibited and the chlorophyll a/b ratio decreased only in the vigorously growing young leaves. Pb treatment had only a slight effect on both parameters. The changes in the chlorophyll-protein pattern of thylakoids were strongly related to their chlorophyll content but the response of each complex was different. Cd reduced the amount of chlorophyll containing complexes in the order of photosystem I > light-harvesting complex II > photosystem Il-core, while light-harvesting complex II appeared somewhat more sensitive than photosystem I in Pb treated plants. In accordance, a decline or blue shift of the long wavelength fluorescence emission band of chloroplasts was observed referring to disturbances also in photosystem I antenna assembly. The accumulation of chlorophyll and chlorophyll-proteins did not show close relationship to the heavy metal content of leaves which was the highest in the first of the intensively expanding leaves in the time of the treatment. The extraordinary sensitivity of photosystem I, and the relative stability of photosystem II under Cd treatment were similar to the case found in iron deficient plants. However, the pattern of chlorophyll content of leaf storeys of Cd treated plants rather followed the changes in their Mn content

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