Results 21 to 30 of about 509 (140)

Proton motive force partitioning links energy and redox balance to photoprotection and carbon gain [PDF]

Frontiers in Plant Science
Fluctuating irradiance forces leaves to balance energy conversion with protection against reactive oxygen species (ROS) produced when light harvesting exceeds metabolic demand.
Fardad Didaran, Sarah MacPherson, Alice Cherestes, Saman Zohrabi, Mark Lefsrud   +4 more
doaj   +2 more sources

NTRC Effects on Non-Photochemical Quenching Depends on PGR5 [PDF]

Antioxidants, 2021
Non-photochemical quenching (NPQ) protects plants from the detrimental effects of excess light. NPQ is rapidly induced by the trans-thylakoid proton gradient during photosynthesis, which in turn requires PGR5/PGRL1-dependent cyclic electron flow (CEF ...
Belen Naranjo, Jan-Ferdinand Penzler, Thilo Rühle, Dario Leister   +3 more
doaj   +2 more sources

Importance of cysteine residues in the C-terminal region of PGRL1 for PSI photoprotection in Chlamydomonas reinhardtii [PDF]

Plant Physiology
Abstract Photoinhibition is more pronounced in photosystem II (PSII) than in PSI. However, PSI is sensitive to photoinhibition in mutants of PROTON GRADIENT REGULATION5 (PGR5) and PGR5-LIKE1 (PGRL1) in both Arabidopsis thaliana and Chlamydomonas reinhardtii.
Hiroko Takahashi, Yuki Okegawa, Atsuko Isu, Tetsuto Sato, Keisuke Yoshida, Ken-ichi Wakabayashi, Toru Hisabori, Yoshitaka Nishiyama   +7 more
openaire   +2 more sources

PGRL1 and LHCSR3 Compensate for Each Other in Controlling Photosynthesis and Avoiding Photosystem I Photoinhibition during High Light Acclimation of Chlamydomonas Cells [PDF]

Molecular Plant, 2017
In natural environments, photosynthetic organisms experience frequent changes in the light supply, requiring modulation of light harvesting and electron transfer reactions to avoid mismatch between light conversion and metabolic reactions that may result in the production of harmful reactive oxygen species.
Frédéric Chaux, Xenie Johnson, Pascaline Auroy   +2 more
exaly   +3 more sources

Complexities and protein complexes in the antimycin A-sensitive pathway of cyclic electron flow in plants [PDF]

Frontiers in Plant Science, 2013
Antimycin A-sensitive cyclic electron flow (AA-sensitive CEF) was discovered by Arnon and co-workers more than 50 years ago and serves to recycle electrons from ferredoxin (Fd) to plastoquinone (PQ).
Dario eLeister, Dario eLeister, Toshiharu eShikanai   +2 more
doaj   +2 more sources

Light Quality-Dependent Regulation of Non-Photochemical Quenching in Tomato Plants

Biology, 2021
Photosynthetic pigments of plants capture light as a source of energy for photosynthesis. However, the amount of energy absorbed often exceeds its utilization, thus causing damage to the photosynthetic apparatus.
Magdalena Trojak, Ernest Skowron
doaj   +1 more source

Impact of Salinity, Elevated Temperature, and Their Interaction with the Photosynthetic Efficiency of Halophyte Crop Chenopodium quinoa Willd

Agriculture, 2023
Chenopodium quinoa is a genetically diverse crop that can adapt to a wide range of environments, including temperatures and salinities. However, only a few studies have assessed the combined effects of two or more environmental factors on C. quinoa. Here,
Elena Shuyskaya, Zulfira Rakhmankulova, Maria Prokofieva, Varvara Kazantseva, Nina Lunkova   +4 more
doaj   +1 more source

Plants cope with fluctuating light by frequency‐dependent nonphotochemical quenching and cyclic electron transport

New Phytologist, Volume 239, Issue 5, Page 1869-1886, September 2023., 2023
Summary In natural environments, plants are exposed to rapidly changing light. Maintaining photosynthetic efficiency while avoiding photodamage requires equally rapid regulation of photoprotective mechanisms. We asked what the operation frequency range of regulation is in which plants can efficiently respond to varying light.
Yuxi Niu, Dušan Lazár, Alfred R. Holzwarth, David M. Kramer, Shizue Matsubara, Fabio Fiorani, Hendrik Poorter, Silvia D. Schrey, Ladislav Nedbal   +8 more
wiley   +1 more source

STN7 is not essential for developmental acclimation of Arabidopsis to light intensity

The Plant Journal, Volume 114, Issue 6, Page 1458-1474, June 2023., 2023
SUMMARY Plants respond to changing light intensity in the short term through regulation of light harvesting, electron transfer, and metabolism to mitigate redox stress. A sustained shift in light intensity leads to a long‐term acclimation response (LTR). This involves adjustment in the stoichiometry of photosynthetic complexes through de novo synthesis
Sarah E. Flannery, Federica Pastorelli, Thomas Z. Emrich‐Mills, Stuart A. Casson, C. Neil Hunter, Mark J. Dickman, Philip J. Jackson, Matthew P. Johnson   +7 more
wiley   +1 more source

Redox regulation in C3 and C4 plants during climate change and its implications on food security

Food and Energy Security, Volume 12, Issue 2, March 2023., 2023
This review focus on the similarities and differences in redox regulation in C3 and C4 plants. Antioxidant defence response against abiotic stresses such as drought, salinity and high temperatures is reviewed. The redox mediated regulation of growth and development of C3 and C4 plants are also addressed. Abstract Achieving food security and sustainable
Mustafa Cemre Sonmez, Rengin Ozgur, Baris Uzilday, Ismail Turkan, Showkat Ahmad Ganie   +4 more
wiley   +1 more source