Results 1 to 10 of about 1,437 (117)

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

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   +3 more sources

The evolutionary conserved iron-sulfur protein TCR controls P700 oxidation in photosystem I [PDF]

iScience, 2021
Summary: In natural habitats, plants have developed sophisticated regulatory mechanisms to optimize the photosynthetic electron transfer rate at the maximum efficiency and cope with the changing environments.
Mai Duy Luu Trinh, Daichi Miyazaki, Sumire Ono, Jiro Nomata, Masaru Kono, Hiroyuki Mino, Tatsuya Niwa, Yuki Okegawa, Ken Motohashi, Hideki Taguchi, Toru Hisabori, Shinji Masuda   +11 more
doaj   +2 more sources

Identification of Twelve Different Mineral Deficiencies in Hydroponically Grown Sunflower Plants on the Basis of Short Measurements of the Fluorescence and P700 Oxidation/Reduction Kinetics [PDF]

Frontiers in Plant Science, 2022
The photosynthetic electron transport chain is mineral rich. Specific mineral deficiencies can modify the electron transport chain specifically. Here, it is shown that on the basis of 2 short Chl fluorescence and P700+ measurements (approx. 1 s each), it
Gert Schansker, Miho Ohnishi, Riu Furutani, Chikahiro Miyake   +3 more
doaj   +2 more sources

Molecular Mechanism of Oxidation of P700 and Suppression of ROS Production in Photosystem I in Response to Electron-Sink Limitations in C3 Plants

Antioxidants, 2020
Photosynthesis fixes CO2 and converts it to sugar, using chemical-energy compounds of both NADPH and ATP, which are produced in the photosynthetic electron transport system.
Chikahiro Miyake
doaj   +3 more sources

Coordinated Activity of Photosystem I and Photosystem II in Selaginella martensii (Lycopodiophyta) Across Light Gradients. [PDF]

Physiol Plant
ABSTRACT Selaginella martensii is a living member of lycophytes, an early divergent group of vascular plants. This shade‐adapted species can acclimate to various light regimes, from deep shade to high light, with a gain in carboxylation capacity accompanied by modulations in thylakoid composition, including increased relative amount of photosystem I ...
Ferroni L, Živčak M, Colpo A, Simonetto S, Baldisserotto C, Pancaldi S, Brestič M.   +6 more
europepmc   +2 more sources

How state transitions balance photosynthetic electron transport in plants - a quantitative study. [PDF]

New Phytol
Summary In plants, the process of state transition regulates the allocation of sunlight energy between Photosystem II (PSII) and PSI. However, the implications of state transitions for harmonizing electron transport rates between photosystems, and a full quantitative picture of this process, remain underexplored.
Koochak H, Oung HMO, Krysiak M, Svoboda V, Kirchhoff H.   +4 more
europepmc   +2 more sources

Oxidation of P700 Induces Alternative Electron Flow in Photosystem I in Wheat Leaves

Plants, 2019
Oxygen (O2)-evolving photosynthetic organisms oxidize the reaction center chlorophyll, P700, in photosystem I (PSI) to suppress the production of reactive oxygen species.
Kanae Kadota, Riu Furutani, Amane Makino, Yuji Suzuki, Shinya Wada, Chikahiro Miyake   +5 more
doaj   +3 more sources

Oxidation of P700 Ensures Robust Photosynthesis

Frontiers in Plant Science, 2018
In the light, photosynthetic cells can potentially suffer from oxidative damage derived from reactive oxygen species. Nevertheless, a variety of oxygenic photoautotrophs, including cyanobacteria, algae, and plants, manage their photosynthetic systems ...
Ginga Shimakawa, Chikahiro Miyake, Chikahiro Miyake   +2 more
doaj   +3 more sources

Glucose Uncouples Nitrogen Sensing From Chlorosis via a Photosynthetic Checkpoint in Synechocystis sp. PCC 6803. [PDF]

Physiol Plant
ABSTRACT Cyanobacteria adapt to nitrogen starvation by undergoing chlorosis, a regulated bleaching process that involves the degradation of phycobilisomes, the light‐harvesting antennae complexes, and accumulation of glycogen. While this response is well characterized under photoautotrophic conditions, its modulation by external organic carbon sources ...
Ortega-Martínez P, Giner-Lamia J, Wey LT, Muro-Pastor MI, Florencio FJ, Díaz-Troya S.   +5 more
europepmc   +2 more sources

Regulation of Photosynthetic Electron Transport Is Affected Differently in the Arabidopsis thaliana Manganese Transporter Mutants pam71 and cmt1. [PDF]

Physiol Plant
ABSTRACT Manganese (Mn) is an essential element in photosynthesis as a catalyst for water splitting in photosystem II (PSII). Previous studies have shown that Mn‐deficient plants are more susceptible to photoinhibition and have reduced PSII and PSI contents and activities.
Strandberg L, Krieger-Liszkay A.
europepmc   +2 more sources