Academic literature on the topic 'Photosystem antenna size'

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Journal articles on the topic "Photosystem antenna size"

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Schiphorst, Christo, Luuk Achterberg, Rodrigo Gómez, et al. "The role of light-harvesting complex I in excitation energy transfer from LHCII to photosystem I in Arabidopsis." Plant Physiology 188, no. 4 (2021): 2241–52. http://dx.doi.org/10.1093/plphys/kiab579.

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Abstract Photosynthesis powers nearly all life on Earth. Light absorbed by photosystems drives the conversion of water and carbon dioxide into sugars. In plants, photosystem I (PSI) and photosystem II (PSII) work in series to drive the electron transport from water to NADP+. As both photosystems largely work in series, a balanced excitation pressure is required for optimal photosynthetic performance. Both photosystems are composed of a core and light-harvesting complexes (LHCI) for PSI and LHCII for PSII. When the light conditions favor the excitation of one photosystem over the other, a mobil
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Mäenpää, Pirkko, and Bertil Andersson. "Photosystem II Heterogeneity and Long-Term Acclimation of Light-Harvesting." Zeitschrift für Naturforschung C 44, no. 5-6 (1989): 403–6. http://dx.doi.org/10.1515/znc-1989-5-611.

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Abstract The main chlorophyll a/b protein complex of the chloroplast thylakoid membrane is organized into two subpopulations; one inner which is tightly bound to the photosystem II core and one outer which is bound more loosely or peripherally. In this study, changes in the LHC II com position due to long-term light acclimation were analyzed and quantified in spinach thylakoids and isolated stroma lamellae vesicles. The results show that; photosystem II located in the appressed thylakoid regions (α-centres) which have a relatively large antenna size, contains both the inner and outer LHC II wi
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van Rensen, Jack J. S., and Leon E. E. M. Spätjens. "Photosystem II Heterogeneity in Triazine-Resistant and Susceptible Biotypes of Chenopodium album." Zeitschrift für Naturforschung C 42, no. 6 (1987): 794–97. http://dx.doi.org/10.1515/znc-1987-0625.

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The heterogeneity of photosystem II with respect to α and β centers was investigated in triazine-resistant and susceptible biotypes of Chenopodium album . In both biotypes the light harvesting antenna sizes of photosystem II α centers was larger than those of β centers. In the resistant biotype the antenna size of the α centers was smaller than those in the susceptible one. There was not much difference in the antenna sizes of the β centers. The proportion of β centers was larger in the resistant biotype compared with the sensitive one.
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Rensen, Jack J. S. van, and 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 (1987): 794–97. http://dx.doi.org/10.1515/znc-1987-7-808.

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The heterogeneity of photosystem II with respect to a and β centers was investigated in triazine-resistant and susceptible biotypes of Chenopodium album. In both biotypes the light harvesting antenna sizes of photosystem II a centers was larger than those of β centers. In the resistant biotype the antenna size of the a centers was smaller than those in the susceptible one. There was not much difference in the antenna sizes of the β centers. The proportion of β centers was larger in the resistant biotype compared with the sensitive one.
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Sundby, Cecilia, Anastasios Melis, Pirkko Mäenpää та 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, № 3 (1986): 475–83. http://dx.doi.org/10.1016/0005-2728(86)90084-8.

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Hemelrijk, Petra W., and Hans J. van Gorkom. "Size-distributions of antenna and acceptor-pool of Photosystem II." Biochimica et Biophysica Acta (BBA) - Bioenergetics 1274, no. 1-2 (1996): 31–38. http://dx.doi.org/10.1016/0005-2728(96)00006-0.

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Velitchkova, Maya, Martin Stefanov, and Antoaneta V. Popova. "Effect of Low Light on Photosynthetic Performance of Tomato Plants—Ailsa Craig and Carotenoid Mutant Tangerine." Plants 12, no. 16 (2023): 3000. http://dx.doi.org/10.3390/plants12163000.

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The effects of a five-day treatment with low light intensity on tomato plants—Ailsa Craig and tangerine mutant—at normal and low temperatures and after recovery for three days under control conditions were investigated. The tangerine tomato, which has orange fruits, yellowish young leaves, and pale blossoms, accumulates prolycopene rather than all-trans lycopene. We investigated the impact of low light at normal and low temperatures on the functioning and effectiveness of photosynthetic apparatuses of both plants. The photochemical activities of Photosystem I (PSI) and Photosystem II (PSII) we
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Joshi, Manoj K., Prasanna Mohanty, and 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 (1995): 77–85. http://dx.doi.org/10.1515/znc-1995-1-212.

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Abstract Thylakoids isolated from SAN 9785 (4-chloro-5-dimethylamino-2-phenyl-3(2H)-pyridazi-none)-treated pea plants showed an inhibition of “state transition” and the light-harvesting complex II (LHC II) phosphorylation-mediated changes in the energy distribution between photosystem II (PS II) and photosystem I (PS I) as measured by a decrease in PS II and an increase in PS I fluorescence yield. Interestingly, in these thylakoids the extent of phosphorylation-induced migration of light-harvesting complex (LHC II-P) to non-appressed mem­brane regions was only marginally inhibited. We propose
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Guenther, J. E., J. A. Nemson, and A. Melis. "Photosystem stoichiometry and chlorophyll antenna size in Dunaliella salina (green algae)." Biochimica et Biophysica Acta (BBA) - Bioenergetics 934, no. 1 (1988): 108–17. http://dx.doi.org/10.1016/0005-2728(88)90125-9.

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Barter, Laura M. C., Maria Bianchietti, Chris Jeans, et al. "Relationship between Excitation Energy Transfer, Trapping, and Antenna Size in Photosystem II†." Biochemistry 40, no. 13 (2001): 4026–34. http://dx.doi.org/10.1021/bi001724q.

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Dissertations / Theses on the topic "Photosystem antenna size"

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FORMIGHIERI, Cinzia. "Regulating light use efficiency by genetic engineering of Chlamydomonas reinhardtii." Doctoral thesis, 2012. http://hdl.handle.net/11562/392922.

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Le alghe sono definite organismi fotosintetici ossigenici, procarioti o eucarioti, con un’organizzazione da unicellulare a pluricellulare, che non sviluppano foglie o radici giustificando la classificazione di ‘piante inferiori’. Le alghe presentano diverse potenziali applicazioni commerciali, come la produzione di biomassa per l’alimentazione umana/animale o per essere usata come fertilizzante, l’estrazione di molecole ad elevato valore aggiunto con un mercato nell’industria chimica o farmaceutica, infine, anche se ancora lontano dalla commercializzazione, la produzione di bio-combustibili. F
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Book chapters on the topic "Photosystem antenna size"

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Andreasson, Eva, Per Svensson, and Per-Åke Albertsson. "Heterogeneity of the Functional Antenna Size of Photosystem I from Spinach Thylakoids." In Current Research in Photosynthesis. Springer Netherlands, 1990. http://dx.doi.org/10.1007/978-94-009-0511-5_410.

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Kornyeyev, D. Yu. "The Antenna Size Changes of Photosystem 2 Complexes Differing in QB Reduction." In Photosynthesis: Mechanisms and Effects. Springer Netherlands, 1998. http://dx.doi.org/10.1007/978-94-011-3953-3_277.

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Watanabe, N. "Reduced Antenna Size Of Photosystem II in Cereals for High Light Environment." In Photosynthesis: Mechanisms and Effects. Springer Netherlands, 1998. http://dx.doi.org/10.1007/978-94-011-3953-3_511.

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Ikeda, Yohei, Yasuhiro Kashino, Hiroyuki Koike, and Kazuhiko Satoh. "Purification and the Antenna Size of Photosystem I Complexes from a Centric Diatom, Chaetoceros gracilis." In Photosynthesis. Energy from the Sun. Springer Netherlands, 2008. http://dx.doi.org/10.1007/978-1-4020-6709-9_60.

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Härtel, Heiko, and Heiko Lokstein. "Nonphotochemical Quenching of Chlorophyll Fluorescence in Leaves: Influence of Photosystem II Antenna Size and Violaxanthin De-Epoxidation." In Photosynthesis: from Light to Biosphere. Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-009-0173-5_68.

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Naver, Helle, Anna Haldrup, Margaret Gilpin, and Henrik Vibe Scheller. "The Functional Antennae Size of the Photosystem I Complex is Unaffected in Transgenic Arabidopsis Lacking PSI-H." In Photosynthesis: Mechanisms and Effects. Springer Netherlands, 1998. http://dx.doi.org/10.1007/978-94-011-3953-3_149.

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"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." In Photosynthesis. CRC Press, 2004. http://dx.doi.org/10.1201/9781482294446-20.

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Reports on the topic "Photosystem antenna size"

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Nelson, Nathan, and Charles F. Yocum. Structure, Function and Utilization of Plant Photosynthetic Reaction Centers. United States Department of Agriculture, 2012. http://dx.doi.org/10.32747/2012.7699846.bard.

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Light capturing and energy conversion by PSI is one of the most fundamental processes in nature. In the heart of these adaptations stand PSI, PSII and their light harvesting antenna complexes. The main goal of this grant proposal was to obtain by X-ray crystallography information on the structure of plant photosystem I (PSI) and photosystem II (PSII) supercomplexes. We achieved several milestones along this line but as yet, like several strong laboratories around the world, we have no crystal structure of plant PSII. We have redesigned the purification and crystallization procedures and recent
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Melis, A., J. Neidhardt, and 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), 1998. http://dx.doi.org/10.2172/305596.

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Kirchhoff, Helmut, and Ziv Reich. Protection of the photosynthetic apparatus during desiccation in resurrection plants. United States Department of Agriculture, 2014. http://dx.doi.org/10.32747/2014.7699861.bard.

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In this project, we studied the photosynthetic apparatus during dehydration and rehydration of the homoiochlorophyllous resurrection plant Craterostigmapumilum (retains most of the photosynthetic components during desiccation). Resurrection plants have the remarkable capability to withstand desiccation, being able to revive after prolonged severe water deficit in a few days upon rehydration. Homoiochlorophyllous resurrection plants are very efficient in protecting the photosynthetic machinery against damage by reactive oxygen production under drought. The main purpose of this BARD project was
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