Results 41 to 50 of about 1,487 (149)

Guard cell photorespiration controls stomata behavior and development

New Phytologist, Volume 250, Issue 5, Page 3182-3196, June 2026.
Summary Photorespiration is traditionally viewed as a limitation to photosynthetic efficiency. However, it is mandatory for safeguarding the Calvin–Benson–Bassham cycle from inhibitory byproducts through Rubisco‐mediated oxidative misfire and is tightly integrated with primary metabolism.
Hu Sun, Inken Thiemann, Nils Schmidt, Johannes Kromdijk, Tracy Lawson, Martin Hagemann, Stefan Timm   +6 more
wiley   +1 more source

Responses of photosystem I compared with photosystem II to fluctuating light in the shade-establishing tropical tree species Psychotria henryi

Frontiers in Plant Science, 2016
Shade-establishing plants growing in the forest understory are exposed to constant high light or fluctuating light when gaps are created by fallen trees.
Wei Huang, Ying-Jie Yang, Hong Hu, Shi-Bao Zhang   +3 more
doaj   +1 more source

Photoinhibition of photosystem I under high light in the shade-established tropical tree species Psychotria rubra

Frontiers in Plant Science, 2015
The photosynthetic sensitivity to high light differs among understory plants of shade- and sun- established tree species. Shade-established tree species are sensitive to high light but the underlying photosynthetic mechanism has not been fully resolved ...
Wei eHuang, Wei eHuang, Shi-Bao eZhang, Jiao-Lin eZhang, Hong eHu   +4 more
doaj   +1 more source

Energy Transfer and Charge Separation in Photosystem I: P700 Oxidation Upon Selective Excitation of the Long-Wavelength Antenna Chlorophylls of Synechococcus elongatus [PDF]

Biophysical Journal, 1998
Photosystem I of the cyanobacterium Synechococcus elongatus contains two spectral pools of chlorophylls called C-708 and C-719 that absorb at longer wavelengths than the primary electron donor P700. We investigated the relative quantum yields of photochemical charge separation and fluorescence as a function of excitation wavelength and temperature in ...
Palsson, L.O., Flemming, C., Gobets, B., van Grondelle, R., Dekker, J.P., Schlodder, E.   +5 more
openaire   +3 more sources

Cryo‐EM of Rationally Designed Photosystem I Nanoassembly on Graphene Validates Orientation‐Driven Enhancement of Photocatalytic Performance

Advanced Functional Materials, Volume 36, Issue 23, 19 March 2026.
The first cryo‐EM visualization and quantification of oriented Photosystem I (PSI) on single‐layer graphene is reported. Domain‐specific covalent anchoring of PSI, with the reducing side of the biophotocatalyst toward graphene, promotes three‐fold higher anodic photocurrent generation compared to a randomly physisorbed counterpart. This approach allows
Miriam Izzo, Margot Jacquet, Tomasz Góral, Marcin Strawski, Takayuki Fujiwara, Shin‐ya Miyagishima, Joanna Kargul   +6 more
wiley   +1 more source

Differential Mechanisms of Photosynthetic Acclimation to Light and Low Temperature in Arabidopsis and the Extremophile Eutrema salsugineum

Plants, 2017
Photosynthetic organisms are able to sense energy imbalances brought about by the overexcitation of photosystem II (PSII) through the redox state of the photosynthetic electron transport chain, estimated as the chlorophyll fluorescence parameter 1-qL ...
Nityananda Khanal, Geoffrey E. Bray, Anna Grisnich, Barbara A. Moffatt, Gordon R. Gray   +4 more
doaj   +1 more source

Photosynthetic and Transcriptional Regulation Reveals Divergent Mechanisms of Active Adaptation in C4 Maize and Passive Regulation in C3 Rice Under Long‐Term Fluctuating Light

Food and Energy Security, Volume 15, Issue 2, March/April 2026.
ABSTRACT Fluctuating light is a key factor limiting crop photosynthetic efficiency, with C4 maize (Zea mays) and C3 rice (Oryza sativa) crops exhibiting distinct acclimation responses. However, the systemic differences in physiological and transcriptional regulatory mechanisms between C3 and C4 crops under long‐term fluctuating light remain poorly ...
Wang‐Shun Zhang, Zi‐Mo Guo, Xiao‐Ling Li, Rong‐Xian Sha, Wen‐Zhuo Yang, Cai‐Qing Wang, Tong‐Xin An, Jin‐Yan Zhang   +7 more
wiley   +1 more source

The Application of Carbon Dots in Crops for Sustainable Agriculture

ChemistryEurope, Volume 4, Issue 2, February 2026.
Carbon dots serve as versatile nanoagents across the crop life cycle. They promote plant growth and photosynthesis, enhance resilience to biotic and abiotic stresses, aid in postharvest preservation, and enable sensitive detection of contaminants.
Xue Li, Lei Jin, Gurpreet Singh Selopal, Federico Rosei, Jinhua Li   +4 more
wiley   +1 more source

Alleviation of photoinhibition by coordination of chlororespiration and cyclic electron flow mediated by NDH under heat stressed condition in tobacco

Frontiers in Plant Science, 2016
With increase of temperature, Fo gradually rose in both WT and the mutant inactivated in the type-1 NAD(P)H dehydrogenase (NDH), a double mutant disrupted the genes of ndhJ and ndhK (∆ndhJK) or a triple mutant disrupted the genes of ndhC, ndhJ and ...
Qinghua eLi, Zhengju eYao, Hualing eMi
doaj   +1 more source

Contrasting Responses of Plastid Terminal Oxidase Activity Under Salt Stress in Two C4 Species With Different Salt Tolerance

Frontiers in Plant Science, 2020
The present study reveals contrasting responses of photosynthesis to salt stress in two C4 species: a glycophyte Setaria viridis (SV) and a halophyte Spartina alterniflora (SA).
Jemaa Essemine, Ming-Ju Amy Lyu, Mingnan Qu, Shahnaz Perveen, Naveed Khan, Qingfeng Song, Genyun Chen, Xin-Guang Zhu   +7 more
doaj   +1 more source