Results 61 to 70 of about 1,487 (149)

Additive Effects of Multiple Photoprotective Mechanisms Drive Efficient Photosynthesis Under Variable Light Conditions

Plant, Cell &Environment, Volume 48, Issue 10, Page 7186-7198, October 2025.
ABSTRACT To cope with changing external conditions, plants undergo dynamic acclimation processes that adjust their photosynthetic machinery, optimising energy use while minimising damage to photosystems (PS). Key photoprotective mechanisms include non‐photochemical quenching (NPQ), which dissipates excess excitation energy, and alternative electron ...
Claudia Beraldo, Chiara Toffanin, Tomas Morosinotto, Alessandro Alboresi   +3 more
wiley   +1 more source

CsPbBr3 Perovskite‐Based Heterostructures in Photocatalysis: Mechanisms, Stability, and Multifunctional Performance

Advanced Science, Volume 12, Issue 34, September 11, 2025.
This review synthesizes breakthroughs in CsPbBr3 heterostructure photocatalysis: 1) Mechanistic insights on band alignment engineering (Type‐II/Z/S‐scheme) for suppressed charge recombination; 2) Stabilization strategies via interfacial encapsulation and defect passivation overcoming hydrolysis; 3) Multifunctional design principles enabling efficient ...
Kuanxin Lv, Zhenzhen Li, Xing Huang, Zetong Cheng, Zhongyan Wang, Hang Zhao   +5 more
wiley   +1 more source

Different roles of cyclic electron flow around photosystem I under sub-saturating and saturating light intensities in tobacco leaves

Frontiers in Plant Science, 2015
In higher plants, the generation of proton gradient across the thylakoid membrane (pH) through cyclic electron flow (CEF) has mainly two functions: 1) to generate ATP and balance the ATP/NADPH energy budget, and 2) to protect photosystems I and II ...
Wei eHuang, Ying-Jie eYang, Hong eHu, Shi-Bao eZhang   +3 more
doaj   +1 more source

Effect of the P700 pre-oxidation and point mutations near A0 on the reversibility of the primary charge separation in Photosystem I from Chlamydomonas reinhardtii

Biochimica et Biophysica Acta (BBA) - Bioenergetics, 2010
Time-resolved fluorescence studies with a 3-ps temporal resolution were performed in order to: (1) test the recent model of the reversible primary charge separation in Photosystem I (Müller et al., 2003; Holwzwarth et al., 2005, 2006), and (2) to reconcile this model with a mechanism of excitation energy quenching by closed Photosystem I (with P700 pre-
Giera, W., Ramesh, V.M., Webber, A.N., van Stokkum, I.H.M., van Grondelle, R., Gibasiewicz, K.   +5 more
openaire   +3 more sources

Differences in gas exchange, chlorophyll fluorescence, and modulated reflection of light at 820 nm between two rhododendron cultivars under aluminum stress conditions.

PLoS ONE
Aluminum (Al) toxicity is an important factor restricting the normal growth of plants in acidic soil. Rhododendron (Ericaceae) can grow relatively well in acidic soil. To uncover the adaptive mechanisms of photosynthesis under Al stress, the influence of
Jing Zhang, Yanxia Xu, Kaixing Lu, Zhengyu Gong, Zhenming Weng, Pengzhou Shu, Yujia Chen, Songheng Jin, Xueqin Li   +8 more
doaj   +1 more source

Photosystem vulnerabilities under compound abiotic stresses: mechanisms, diagnostics, and engineering for resilient crops

Plant Stress
Photosynthesis, essential for plant productivity and global food security, is vulnerable to compound abiotic stresses like high light, drought, heat, and salinity. These disrupt Photosystem II (PSII) and Photosystem I (PSI), causing efficiency losses and
Yonggang Gao, Xinyu Li, Chaofan Han, Qiuyi Huang, Rui Wu, Cheng Zhao, Kuijun She   +6 more
doaj   +1 more source

Dysfunction of Chloroplast Protease Activity Mitigates pgr5 Phenotype in the Green Algae Chlamydomonas reinhardtii

Plants
Researchers have described protection mechanisms against the photoinhibition of photosystems under strong-light stress. Cyclic Electron Flow (CEF) mitigates electron acceptor-side limitation, and thus contributes to Photosystem I (PSI) protection ...
Shin-Ichiro Ozawa, Guoxian Zhang, Wataru Sakamoto   +2 more
doaj   +1 more source

Oxidation of P700 Ensures Robust Photosynthesis

Oxidation of P700 Ensures Robust Photosynthesis
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 successfully.
openaire  

Paradoxes in judging the inhibition of photosynthetic electron transfer chain using P700 oxidation and dark re-reduction analyses

Biochimica et Biophysica Acta (BBA) - Bioenergetics, 2022
Tiwari Arjun, Aro Eva-Maria
openaire   +2 more sources

Intrinsic Fluctuations in Transpiration Induce Photorespiration to Oxidize P700 in Photosystem I

Intrinsic Fluctuations in Transpiration Induce Photorespiration to Oxidize P700 in Photosystem I
Upon exposure to environmental stress, the primary electron donor in photosystem I (PSI), P700, is oxidized to suppress the production of reactive oxygen species that could oxidatively inactivate the function of PSI. The illumination of rice leaves with actinic light induces intrinsic fluctuations in the opening and closing of stomata, causing the net ...
openaire