Results 21 to 30 of about 2,591 (159)

Photosynthetic response of lutein-deficient mutant lut2 of Arabidopsis thaliana to low temperature at high light

Photosynthetica, 2022
Alterations in photosynthetic performance of lutein-deficient mutant lut2 and wild type (wt) of Arabidopsis thaliana were followed after treatment with low temperature and high light for 6 d.
A.V. POPOVA, R. VLADKOVA, P. BORISOVA, K. GEORGIEVA, G. MIHAILOVA, V. VELIKOVA, T. TSONEV, A.G. IVANOV   +7 more
doaj   +1 more source

Photoinhibition and P700 in the Marine Diatom Amphora sp. [PDF]

Plant Physiology, 1981
The marine diatom Amphora sp. was grown at a light intensity of 7.0 x 10(15) quanta centimeter(-2) second(-1). Light saturation of photosynthesis for these cells was between 6.0 and 7.0 x 10(16) quanta centimeter(-2) second(-1). At light intensities greater than saturation, photosynthetic (14)CO(2) fixation was depressed, while P700 unit size ...
D W, Gerber, J E, Burris
openaire   +2 more sources

Insights into melatonin-induced photosynthetic electron transport under low-temperature stress in cucumber

Frontiers in Plant Science, 2022
In this study, the differences in chlorophyll fluorescence transient (OJIP) and modulated 820 nm reflection (MR820) of cucumber leaves were probed to demonstrate an insight into the precise influence of melatonin (MT) on cucumber photosystems under low ...
Pei Wu, Pei Wu, Yadong Ma, Yadong Ma, Golam Jalal Ahammed, Baoyu Hao, Baoyu Hao, Jingyi Chen, Jingyi Chen, Wenliang Wan, Wenliang Wan, Yanhui Zhao, Yanhui Zhao, Huimei Cui, Huimei Cui, Wei Xu, Wei Xu, Jinxia Cui, Jinxia Cui, Huiying Liu, Huiying Liu   +20 more
doaj   +1 more source

Changing frequency of fluctuating light reveals the molecular mechanism for P700 oxidation in plant leaves

Plant Direct, 2018
Natural sunlight exceeds the demand of photosynthesis such that it can cause plants to produce reactive oxygen species (ROS), which subsequently cause photo‐oxidative damage.
Ginga Shimakawa, Chikahiro Miyake
doaj   +1 more source

Mutational analysis of photosystem I of Synechocystis sp. PCC 6803: the role of four conserved aromatic residues in the j-helix of PsaB. [PDF]

PLoS ONE, 2011
Photosystem I is the light-driven plastocyanin-ferredoxin oxidoreductase in the photosynthetic electron transfer of cyanobacteria and plants. Two histidyl residues in the symmetric transmembrane helices A-j and B-j provide ligands for the P700 ...
Wu Xu, Yingchun Wang, Eric Taylor, Amelie Laujac, Liyan Gao, Sergei Savikhin, Parag R Chitnis   +6 more
doaj   +1 more source

Critical evaluation of electron transfer kinetics in P700–FA/FB, P700–FX, and P700–A1 Photosystem I core complexes in liquid and in trehalose glass

Biochimica et Biophysica Acta (BBA) - Bioenergetics, 2018
This work aims to fully elucidate the effects of a trehalose glassy matrix on electron transfer reactions in cyanobacterial Photosystem I (PS I). Forward and backward electron transfer rates from A1A- and A1B- to FX, and charge recombination rates from A0-, A1B-, A1A-, FX-, and [FA/FB]- to P700+ were measured in P700-FA/FB complexes, P700-FX cores, and
Vasily, Kurashov, Michael, Gorka, Georgy E, Milanovsky, T Wade, Johnson, Dmitry A, Cherepanov, Alexey Yu, Semenov, John H, Golbeck   +6 more
openaire   +2 more sources

Cyclic Electron Flow around Photosystem I Promotes ATP Synthesis Possibly Helping the Rapid Repair of Photodamaged Photosystem II at Low Light

Frontiers in Plant Science, 2018
In higher plants, moderate photoinhibition of photosystem II (PSII) leads to a stimulation of cyclic electron flow (CEF) at low light, which is accompanied by an increase in the P700 oxidation ratio.
Wei Huang, Ying-Jie Yang, Ying-Jie Yang, Shi-Bao Zhang, Tao Liu   +4 more
doaj   +1 more source

Differential Response of the Photosynthetic Machinery to Fluctuating Light in Mature and Young Leaves of Dendrobium officinale

Frontiers in Plant Science, 2022
A key component of photosynthetic electron transport chain, photosystem I (PSI), is susceptible to the fluctuating light (FL) in angiosperms. Cyclic electron flow (CEF) around PSI and water-water cycle (WWC) are both used by the epiphytic orchid ...
Ying-Jie Yang, Qi Shi, Qi Shi, Hu Sun, Hu Sun, Ren-Qiang Mei, Wei Huang, Wei Huang   +7 more
doaj   +1 more source

Specific Targeting of PEGylated Liposomal Doxorubicin (Doxil^®) to Tumour Cells Using a Novel TIMP3 Peptide

Molecules, 2020
Doxorubicin is a cytotoxic anthracycline derivative that has been used as a chemotherapeutic in many different forms of human cancer with some success. However, doxorubicin treatment has several side-effects, the most serious of which is cardiomyopathy ...
Mohammed S. Aldughaim, Munitta Muthana, Fatimah Alsaffar, Michael D. Barker   +3 more
doaj   +1 more source

Non-intrusive Assessment of Photosystem II and Photosystem I in Whole Coral Tissues

Frontiers in Marine Science, 2017
Reef building corals (phylum Cnidaria) harbor endosymbiotic dinoflagellate algae (genus Symbiodinium) that generate photosynthetic products to fuel their host's metabolism.
Milán Szabó, Milán Szabó, Anthony W. D. Larkum, David J. Suggett, Imre Vass, László Sass, Barry Osmond, Barry Osmond, Alonso Zavafer, Peter J. Ralph, Wah S. Chow   +10 more
doaj   +1 more source