Results 121 to 130 of about 17,008 (279)

Photoprotection: Current developments and controversies

This review aimed at summarizing some of the key points that were discussed during the photoprotection session at the International Forum of Dermatology in 2022.
Saint Aroman, Markéta, Brugués, Ariadna Ortiz, Sibaud, Vincent, Lim, Henry W, Pellacani, Giovanni, Stockfleth, Eggert   +5 more
core  

Visible Light Part II. Photoprotection against visible and ultraviolet light

, 2021
Cutaneous photobiology studies have focused primarily on the UV portion of the solar spectrum. However, VL comprises 50% of EMR that reaches the earth\u27s surface, and, as discussed in Part I of this CME, VL has cutaneous biologic effects such as ...
Hamzavi, Iltefat, Geisler, Amaris N, Nguyen, Julie, Jagdeo, Jared, Lim, Henry W, Austin, Evan   +5 more
core  

Diurnal Variations in Photochemical Energy Utilization and Osmotic Adjustments in Black Poplar Leaves Under Progressive Water Stress

Plant, Cell &Environment, EarlyView.
ABSTRACT Drought limits the productivity of fast‐growing woody crops, although the metabolic adjustments conferring water stress tolerance remain poorly understood. We investigated the responses of Populus nigra seedlings to water stress by integrating daily physiological measurements and NMR metabolomic analyses.
Antonella Gori, Mauro Centritto, Anatoly P. Sobolev, Giovanni Marino, Francesco Loreto, Francesca Alderotti, Cecilia Brunetti   +6 more
wiley   +1 more source

Photosystem II efficiency in response to diurnal and seasonal variations in photon flux density and air temperature for green, yellow-green, and purple-leaved cultivars of sweet potato [Ipomoea batatas (L.) Lam]

Photosynthetica
This study aimed to investigate the impact of diurnal and seasonal variations in photon flux density (PPFD) and air temperature on PSII efficiency in three sweet potato leaf-color cultivars: green (G), yellow-green (Y), and purple (P). The cultivars were
J.Y. JIANG, C.W. WANG, C.I. CHEN, C.W. CHEN, S.L. WONG, S.P. CHEN, M.Y. HUANG, J.H. WENG   +7 more
doaj   +1 more source

Vestigial Plastids in Parasitic Plants: Evolutionary Remnants or Adaptive Innovations?

Plant, Cell &Environment, EarlyView.
ABSTRACT Throughout the evolutionary history of plants, chloroplasts originating from a cyanobacterial endosymbiosis have undergone remarkable adaptation and specialization, giving rise to a multitude of plastid types. The evolution toward parasitism in plants represents a particularly extreme case of such specialization.
Laia Jené, Sergi Munné‐Bosch
wiley   +1 more source

Les compléments alimentaires dans la photoprotection

, 2005
Les compléments alimentaires répondent à une législation particulière qui est en train d'être harmonisée. Le rayonnement solaire entraîne de graves dommages au niveau de la peau, en particulier par la production de radicaux libres.
PIQUEMAL, Virginie, AZAM, Jany
core  

Photoprotection in Plants: Optical Screening-based Mechanisms

, 2010
Optical screening of excessive and potentially harmful solar radiation is an important photoprotective mechanism, though it has received much less attention in comparison with other systems preventing photooxidative damage to photoautotrophic organisms ...
Solovchenko, Alexei, Alexei Solovchenko
core   +1 more source

Evaluating the Combined Effects of Elevated [CO2] and Accelerated NPQ Relaxation on Yield, Physiology and Transcription in Soybean

Plant, Cell &Environment, EarlyView.
ABSTRACT Improving photosynthesis is proposed as a means of enhancing crop productivity. To assess whether simultaneous increases in light use‐efficiency and carbon assimilation are additive, we investigated the impact of elevated CO2 on the performance of a transgenic soybean line engineered for faster relaxation of photoprotection by overexpression ...
Dilkaran Singh, Amanda P. De Souza, Lynn Doran, Atinder Singh, Jeffrey Hansen, Laurie Beth Leonelli, Steven J. Burgess   +6 more
wiley   +1 more source

Overexpression of Rubisco Activase Improves Photosynthesis and Plant Growth in Rice Under Fluctuating Light Under Future High CO2 Conditions

Plant, Cell &Environment, EarlyView.
ABSTRACT Rubisco activase mediates the activation of Rubisco, the key photosynthetic CO2‐fixing enzyme, and plays a crucial role in regulating photosynthesis and plant growth. Rubisco activase restores catalytic competence to Rubisco active sites by promoting the release of inhibitors in an ATP‐dependent manner.
Wataru Yamori, Marika Inagaki, Hiroshi Fukayama   +2 more
wiley   +1 more source

Antioxidants Differentially Regulate Non‐Photochemical Quenching

Plant, Cell &Environment, EarlyView.
ABSTRACT Non‐photochemical quenching (NPQ) dissipates excess light energy as heat, limiting reactive oxygen species production during photosynthesis. Exogenous antioxidants are widely reported to improve plant performance under stress, yet their impacts on NPQ are inconsistent across studies, complicating mechanistic interpretation.
Aline de Rodrigues de Queiroz, Jeremy H. Brown, Nicole R. Buan, Julie M. Stone, Katarzyna Glowacka, Rebecca L. Roston   +5 more
wiley   +1 more source