Littérature scientifique sur le sujet « Photosystem antenna size »
Créez une référence correcte selon les styles APA, MLA, Chicago, Harvard et plusieurs autres
Consultez les listes thématiques d’articles de revues, de livres, de thèses, de rapports de conférences et d’autres sources académiques sur le sujet « Photosystem antenna size ».
À côté de chaque source dans la liste de références il y a un bouton « Ajouter à la bibliographie ». Cliquez sur ce bouton, et nous générerons automatiquement la référence bibliographique pour la source choisie selon votre style de citation préféré : APA, MLA, Harvard, Vancouver, Chicago, etc.
Vous pouvez aussi télécharger le texte intégral de la publication scolaire au format pdf et consulter son résumé en ligne lorsque ces informations sont inclues dans les métadonnées.
Articles de revues sur le sujet "Photosystem antenna size"
Schiphorst, Christo, Luuk Achterberg, Rodrigo Gómez, Rob Koehorst, Roberto Bassi, Herbert van Amerongen, Luca Dall’Osto et Emilie Wientjes. « The role of light-harvesting complex I in excitation energy transfer from LHCII to photosystem I in Arabidopsis ». Plant Physiology 188, no 4 (6 décembre 2021) : 2241–52. http://dx.doi.org/10.1093/plphys/kiab579.
Texte intégralMäenpää, Pirkko, et Bertil Andersson. « Photosystem II Heterogeneity and Long-Term Acclimation of Light-Harvesting ». Zeitschrift für Naturforschung C 44, no 5-6 (1 juin 1989) : 403–6. http://dx.doi.org/10.1515/znc-1989-5-611.
Texte intégralvan Rensen, Jack J. S., et Leon E. E. M. Spätjens. « Photosystem II Heterogeneity in Triazine-Resistant and Susceptible Biotypes of Chenopodium album ». Zeitschrift für Naturforschung C 42, no 6 (1 juin 1987) : 794–97. http://dx.doi.org/10.1515/znc-1987-0625.
Texte intégralRensen, Jack J. S. van, et Leon E. E. M. Spätjens. « Photosystem II Heterogeneity in Triazine-Resistant and Susceptible Biotypes of Chenopodium album ». Zeitschrift für Naturforschung C 42, no 7-8 (1 août 1987) : 794–97. http://dx.doi.org/10.1515/znc-1987-7-808.
Texte intégralSundby, Cecilia, Anastasios Melis, Pirkko Mäenpää et Bertil Andersson. « Temperature-dependent changes in the antenna size of Photosystem II. Reversible conversion of Photosystem IIα to Photosystem IIβ ». Biochimica et Biophysica Acta (BBA) - Bioenergetics 851, no 3 (octobre 1986) : 475–83. http://dx.doi.org/10.1016/0005-2728(86)90084-8.
Texte intégralHemelrijk, Petra W., et Hans J. van Gorkom. « Size-distributions of antenna and acceptor-pool of Photosystem II ». Biochimica et Biophysica Acta (BBA) - Bioenergetics 1274, no 1-2 (mai 1996) : 31–38. http://dx.doi.org/10.1016/0005-2728(96)00006-0.
Texte intégralGuenther, J. E., J. A. Nemson et A. Melis. « Photosystem stoichiometry and chlorophyll antenna size in Dunaliella salina (green algae) ». Biochimica et Biophysica Acta (BBA) - Bioenergetics 934, no 1 (juin 1988) : 108–17. http://dx.doi.org/10.1016/0005-2728(88)90125-9.
Texte intégralJoshi, Manoj K., Prasanna Mohanty et Salil Bose. « Inhibition of State Transition and Light-Harvesting Complex II Phosphorylation-Mediated Changes in Excitation Energy Distribution in the Thylakoids of SANDOZ 9785-Treated Plants ». Zeitschrift für Naturforschung C 50, no 1-2 (1 février 1995) : 77–85. http://dx.doi.org/10.1515/znc-1995-1-212.
Texte intégralBarter, Laura M. C., Maria Bianchietti, Chris Jeans, Maria J. Schilstra, Ben Hankamer, Bruce A. Diner, James Barber, James R. Durrant et David R. Klug. « Relationship between Excitation Energy Transfer, Trapping, and Antenna Size in Photosystem II† ». Biochemistry 40, no 13 (avril 2001) : 4026–34. http://dx.doi.org/10.1021/bi001724q.
Texte intégralPark II, Y., W. S. Chow et J. M. Anderson. « Antenna Size Dependency of Photoinactivation of Photosystem II in Light-Acclimated Pea Leaves ». Plant Physiology 115, no 1 (1 septembre 1997) : 151–57. http://dx.doi.org/10.1104/pp.115.1.151.
Texte intégralThèses sur le sujet "Photosystem antenna size"
FORMIGHIERI, Cinzia. « Regulating light use efficiency by genetic engineering of Chlamydomonas reinhardtii ». Doctoral thesis, 2012. http://hdl.handle.net/11562/392922.
Texte intégralAlgae are defined as oxygenic photosynthetic organisms, prokaryotic or eukaryotic, with organization ranging from unicellular to multicellular, that don’t have true stems, roots and leaves thus leading to their classification as ‘lower’ plants. Algae have several potential commercial applications, such as production of biomass for human/animal feeding or to be used as fertilizer, extraction of high-value chemicals and pharmaceuticals and, although still far from being on the market, as a biofuels feedstock. Supplying a substrate for heterotrophic growth could be a possible strategy for algae-based biorefineries, however the major advantage of using algae over non photosynthetic organisms is the possibility to convert solar energy, water and carbon dioxide into biomass, through photosynthesis. Conversely, present cultivation of wild type strains yields biomass productivities that are far below theoretical estimations based on optimal photosynthesis, enlightening an existing problem that mainly relies on light utilization inefficiency. In particular, large light-harvesting antenna systems, an advantage in the wild where light could be limiting and cells grow at low density, have been proposed to be instead detrimental during mass cultivation because of photosynthesis saturation occurring at relatively low light intensities, with dissipation of excess absorbed energy, and rapid light extinction within the culture. In contrast, phenotypes of reduced absorption cross section could improve solar-to-biomass conversion efficiency. The main advantage would be that photosynthesis saturation occurs at higher light intensities, minimizing non photochemical quenching. On the other hand, such phenotypes would not survive in the wild and could not be encountered in nature but have to be generated by genetic engineering. Chlamydomonas reinhardtii is a unicellular green alga that is suitable to transformation and whose genomes are sequenced. Techniques of genetic engineering could thus be applied in this model organism to generate mutants with different extents in absorption cross section reduction and to verify their promises of improved light use efficiency. Then, knowledge from intensively studied organisms could help advancing in genetic improvement of other productive algal species that are attractive for commercial applications. From random insertion mutagenesis of the nuclear genome of C. reinhardtii, three ‘pale green’ strains have been isolated, namely antenna size mutant 1 (as1), antenna size mutant 2 (as2) and gun4. A truncated antenna strain must meet specific criteria of high saturation light and quantum yield of photosynthesis and not all ‘pale green’ strains are truly useful mutants for improved productivity. For instance, the gun4 mutant is compromised in chlorophyll biosynthesis, accumulating a chlorophyll precursor porphyrin and displaying photosensitivity. It’s understandable that it could not be grown as a biomass producer. Alternatively, to act on protein targeting and biogenesis of chlorophyll-binding complexes could be a mean to regulate the absorption cross section of the cell without leading to photosensitivity, as suggested by mutant as1. The latter has an insertion mutation in an arsA-homolog gene possibly involved in chloroplast protein import by mediating biogenesis of the translocon of chloroplast outer membrane. Remarkably, the ‘pale green’ phenotype of as1 and as2 derives from reduction in both photosystems antenna size and amount of photosystem core complexes. Acting only on the chlorophyll antenna size per photosystem is not feasible, considering devotion of antenna systems to both light harvesting and photoprotection and structural constrains of a minimal antenna size to allow for folding and function of photosystem core complex. Reducing the density of photosystems in thylakoids could be a valuable complementary strategy as compared to the sole reduction in photosystem antenna size to obtain phenotypes of lower absorption cross section. At the other hand, photosynthetic complexes constitute themselves an apparatus that is far from rigid and long term acclimation to adjust the light harvesting capacity to changing light conditions in C. reinhardtii relies on regulating the chlorophyll content per cell. Factors possibly involved in photo-acclimation, as LHL4, a LHC-like protein, could be target for genetic engineering and constitutive up-regulation of LHL4 has led to reduction in the chlorophyll content. Although the gene responsible for the observed phenotype is still unknown in as2, modification of the light response curve of photosynthesis seems to be the most promising to improve productivity during cultivation in high light. as2 has indeed yielded higher cell densities than wild type both in a small-scale apparatus and in a 65L-photobioreactor. However, in order to observe the expected benefits on photosynthetic productivity during scale-up, attention must be paid to photobioreactor design and growth conditions. In particular, optimum chlorophyll (cell) concentration for maximal integrated net photosynthesis exists at a given irradiance value, which would be such that most of the incident light will be absorbed while avoiding too strong light attenuation that would result in biomass loss through respiration in sub-illuminated zones. Below optimum chlorophyll concentration, limitation in chlorophyll in absorbing light could restrict overall photosynthetic productivity.
Chapitres de livres sur le sujet "Photosystem antenna size"
Andreasson, Eva, Per Svensson et Per-Åke Albertsson. « Heterogeneity of the Functional Antenna Size of Photosystem I from Spinach Thylakoids ». Dans Current Research in Photosynthesis, 1791–94. Dordrecht : Springer Netherlands, 1990. http://dx.doi.org/10.1007/978-94-009-0511-5_410.
Texte intégralKornyeyev, D. Yu. « The Antenna Size Changes of Photosystem 2 Complexes Differing in QB Reduction ». Dans Photosynthesis : Mechanisms and Effects, 1161–64. Dordrecht : Springer Netherlands, 1998. http://dx.doi.org/10.1007/978-94-011-3953-3_277.
Texte intégralWatanabe, N. « Reduced Antenna Size Of Photosystem II in Cereals for High Light Environment ». Dans Photosynthesis : Mechanisms and Effects, 2187–90. Dordrecht : Springer Netherlands, 1998. http://dx.doi.org/10.1007/978-94-011-3953-3_511.
Texte intégralIkeda, Yohei, Yasuhiro Kashino, Hiroyuki Koike et Kazuhiko Satoh. « Purification and the Antenna Size of Photosystem I Complexes from a Centric Diatom, Chaetoceros gracilis ». Dans Photosynthesis. Energy from the Sun, 269–72. Dordrecht : Springer Netherlands, 2008. http://dx.doi.org/10.1007/978-1-4020-6709-9_60.
Texte intégralHärtel, Heiko, et Heiko Lokstein. « Nonphotochemical Quenching of Chlorophyll Fluorescence in Leaves : Influence of Photosystem II Antenna Size and Violaxanthin De-Epoxidation ». Dans Photosynthesis : from Light to Biosphere, 291–94. Dordrecht : Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-009-0173-5_68.
Texte intégralNaver, Helle, Anna Haldrup, Margaret Gilpin et Henrik Vibe Scheller. « The Functional Antennae Size of the Photosystem I Complex is Unaffected in Transgenic Arabidopsis Lacking PSI-H. » Dans Photosynthesis : Mechanisms and Effects, 631–34. Dordrecht : Springer Netherlands, 1998. http://dx.doi.org/10.1007/978-94-011-3953-3_149.
Texte intégral« Flachmann (1997) studied the PS II antennae composition under varying light conditions in tobacc o plants transformed with antisense echnique. An increase of P S II antenna size was observed under low irradiance and also higher LHC II content. The results also suggested that LHC II biogenesis is perhaps not controlled by transcription. The foregone account of different studies using transgenics have inmmensely helped by adding new dimension in our understanding of the structure and function of the photosystem core complexes and of the antennae systems related to both PS II and PS I. A fairly larg e number of studies have also been directed using transgenic technology to understand the process of photoinhibition. Tyystjarvi et al., (1999b) have made a study of photoinhibition of PS II in tobacco an d poplar plants. The tobacco cultivars were expressed with bacterial gov gene in the cytosol and Fe SOD gene from Arabidopsis thaliana rather in the chloroplast. The transformations were affected as an overexpression of glutathione reductase in tobacco and superoxide dismutase in poplar. This transformation resulted in the activities of glutathione reductase in tobacco leaves and superoxide dismutase in poplars were five to eight times higher than in the untransformed plants. The experiments of the authors (Tyystjarvi et al., (1999b) with the transformed plants have led to some important clues regarding the identity of Active Oxygen Species and the mechanisms. There was a lack of protection by overproduction of SOD in the stroma, suggesting that superoxide is not accessible to dismutation by the stromal enzymes. Protection by glutathione reductase suggested that a soluble reductant has a limited chance to trap the species before it reacts with PS II RC. It was concluded (Tyystjarvi et al., 1999b) that much further work is required to understand the molecular mechanism of loss of PS II activity. H.Y.Yamamoto and his scholars have made several studies manipulating the levels of the enzymes of the xanthophyll cycle through transgenic techniques. Verhoeven et al., (2001) have investigated the effect of suppression of Z in tobacco plants with an antisense construct of VDE in growth chambers. Under short-term (2 or 3h) high light treatment, antisense plants had a greater reduction in Fv/Fm ratio relative to wild type, which implied a greater susceptibity to photoinhibition. In the long-term highlight stress experiment, the antisense plants had significant reduction in Fv/Fm. The authors concluded that XC-dependent energy dissipiation is critical for photoprotection in tobacco under excess light in the long term. » Dans Photosynthesis, 119–22. CRC Press, 2004. http://dx.doi.org/10.1201/9781482294446-20.
Texte intégralRapports d'organisations sur le sujet "Photosystem antenna size"
Melis, A., J. Neidhardt et J. R. Benemann. Maximizing photosynthetic productivity and solar conversion efficiency in microalgae by minimizing the light-harvesting chlorophyll antenna size of the photosystems. Office of Scientific and Technical Information (OSTI), août 1998. http://dx.doi.org/10.2172/305596.
Texte intégralNelson, Nathan, et Charles F. Yocum. Structure, Function and Utilization of Plant Photosynthetic Reaction Centers. United States Department of Agriculture, septembre 2012. http://dx.doi.org/10.32747/2012.7699846.bard.
Texte intégralKirchhoff, Helmut, et Ziv Reich. Protection of the photosynthetic apparatus during desiccation in resurrection plants. United States Department of Agriculture, février 2014. http://dx.doi.org/10.32747/2014.7699861.bard.
Texte intégral