High Light Acclimation in the Secondary Plastids Containing Diatom Phaeodactylum tricornutum is Triggered by the Redox State of the Plastoquinone Pool1[W][OA]
نویسندگان
چکیده
Littoral Environnement et Sociétés, Unité Mixte de Recherche 7266, Centre National de la Recherche ScientifiqueUniversity of La Rochelle, Institute for Coastal and Environmental Research, 17000 La Rochelle, France (B.L., J.L.); Universität Konstanz, Plant Ecophysiology, 78457 Konstanz, Germany (S.S., A.G., M.S., P.G.K.); Génomique des Microorganismes, Unité Mixte de Recherche 7238, Centre National de la Recherche Scientifique-Université Pierre et Marie Curie, 75006 Paris, France (A.R., A.F.); and Institute of Genetics and Biophysics, A. Buzzati-Traverso, Consiglio Nazionale delle Ricerche, 80131 Naples, Italy (A.R.)
منابع مشابه
High light acclimation in the secondary plastids containing diatom Phaeodactylum tricornutum is triggered by the redox state of the plastoquinone pool.
In diatoms, the process of energy-dependent chlorophyll fluorescence quenching (qE) has an important role in photoprotection. Three components are essential for qE: (1) the light-dependent generation of a transthylakoidal proton gradient; (2) the deepoxidation of the xanthophyll diadinoxanthin (Dd) into diatoxanthin (Dt); and (3) specific nucleus-encoded antenna proteins, called Light Harvestin...
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Aureochromes constitute a family of blue light (BL) receptors which are found exclusively in heterokont algae such as diatoms (Bacillariophyceae) and yellow-green algae (Xanthophyceae). Previous studies on the diatom Phaeodactylum tricornutum indicate that the formation of a high light acclimated phenotype is mediated by the absorption of BL and that aureochromes might play an important role in...
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The objective of the present study was to test the hypothesis that the acclimation to different light intensities in the diatom Phaeodactylum tricornutum is controlled by light quality perception mechanisms. Therefore, semi-continuous cultures of P. tricornutum were illuminated with equal amounts of photosynthetically absorbed radiation of blue (BL), white (WL), and red light (RL) and in combin...
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The distribution of excitation energy between photosystems I and II (PSI and PSII) was investigated in the marine diatom Phaeodactylum tricornutum (Bohlin) using light-induced changes in fluorescence yield and rate of modulated O(2) evolution. The intensity dependence of the fast fluorescence rise in dark adapted cells (+/-DCMU) suggests that light absorbed by the major antenna complex was not ...
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In Phaeodactylum tricornutum Photosystem II is unusually resistant to damage by exposure to high light intensities. Not only is the capacity to dissipate excess excitations in the antenna much larger and induced more rapidly than in other organisms, but in addition an electron transfer cycle in the reaction center appears to prevent oxidative damage when secondary electron transport cannot keep...
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