Results 111 to 120 of about 26,069 (255)

The unicellular green microalga Botryosphaerella sudetica links plant‐like light protection with an algal lifestyle

New Phytologist, EarlyView.
Summary Nonphotochemical quenching (NPQ) mechanisms fine‐tune light utilisation in the photosynthetic antenna, for example, in response to excess light, to prevent photodamage. NPQ comprises distinct mechanisms, all contributing to photoprotection but acting on different time scales.
Olga Blifernez‐Klassen, Hanna Berger, Viktor Klassen, Swapnil Chaudhari, Thomas Baier, Lutz Wobbe, Olaf Kruse   +6 more
wiley   +1 more source

Heat‐evolved coral photosymbionts exhibit dampened stress responses across distinct physiological contexts

New Phytologist, EarlyView.
Summary Experimental evolution under elevated temperatures has generated heat‐evolved (HE) strains of Symbiodiniaceae that enhance coral bleaching tolerance. However, the biomolecular mechanisms underlying this resilience remain poorly understood. We conducted a laboratory heat‐stress experiment and applied synchrotron‐based Fourier transform infrared (
Bede G. Johnston, Madeline R. Garing, Annaleise R. Klein, Wing Yan Chan, Matthew R. Nitschke, Madeleine J. H. van Oppen   +5 more
wiley   +1 more source

Incidence and outcomes of Merkel cell carcinoma related to Merkel cell polyomavirus status in Iceland in 1981-2023Capsule Summary

JAAD International
Background: Impact of Merkel cell polyomavirus (MCPyV) associated Merkel cell carcinoma (MCC) has not been assessed in the Icelandic population, nor in a whole population elsewhere.
Maria Vygovska, MD, David Hoyt, BS, Ashley M. Snyder, PhD, MPH, Thorarinn Jonmundsson, MSc, Ashley Khouri, BS, Dev Ram Sahni, MD, MHA, Jonathan Ungar, MD, Jesse M. Lewin, MD, Nicholas Gulati, MD, PhD, Robert G. Phelps, MD, Vikram N. Sahni, MD, Jane M. Grant-Kels, MD, Helgi Sigurdsson, MD, Jon Gunnlaugur Jonasson, MD, Jonas A. Adalsteinsson, MD, PhD   +14 more
doaj   +1 more source

Cytokinin downregulates Photosystem II photochemistry during prolonged darkness in a phytochrome B‐dependent manner

New Phytologist, EarlyView.
Cytokinin–phyB signaling modulates PSII photochemistry during prolonged darkness. Summary Cytokinins (CKs) delay dark‐induced senescence, but how they tune photosynthetic function in darkness remains unclear. We investigated the effects of classical aromatic CK benzylaminopurine and CK‐derived compound 1‐(2‐methoxyethyl)‐3‐(1,2,3‐thiadiazol‐5‐yl)urea ...
Veronika Kábrtová, Zuzana Kučerová, Ivo Chamrád, René Lenobel, Pavel Roudnický, Jan Skalák, Martin Hudeček, Filip Zavadil Kokáš, Marek Rác, Tereza Vánská, Jaroslav Nisler, Jan Hejátko, Miroslav Strnad, Martina Špundová, Ondřej Plíhal   +14 more
wiley   +1 more source

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

UV radiation‐induced peptides in frog skin confer protection against cutaneous photodamage through suppressing MAPK signaling

MedComm
Overexposure to ultraviolet light (UV) has become a major dermatological problem since the intensity of ultraviolet radiation is increasing. As an adaption to outside environments, amphibians gained an excellent peptide‐based defense system in their ...
Tingyi Yang, Fenghao Geng, Xiaoyou Tang, Zuxiang Yu, Yulan Liu, Bin Song, Zhihui Tang, Baoning Wang, Bengui Ye, Daojiang Yu, Shuyu Zhang   +10 more
doaj   +1 more source

Temperature Acclimation of Chlorophyll Fluorescence and Carboxylation Capacity From Near‐Instantaneous to Weekly Time Scales

Plant, Cell &Environment, EarlyView.
ABSTRACT We studied near‐instantaneous temperature responses of light‐saturated photosynthesis (Asat) and the operating efficiency of photosystem II (ΦPSII) in relation to acclimation of photosynthetic biochemistry to temperature at the timescale of 1–8 days. We grew two closely related Brassica oleracea L.
Paul L. Drake, Erik J. Veneklaas, Nicholas G. Smith, Steven M. Driever, Hugo J. de Boer   +4 more
wiley   +1 more source

Comparison of photodamage in non-pigmented and pigmented human skin equivalents exposed to repeated ultraviolet radiation to investigate the role of melanocytes in skin photoprotection

Frontiers in Medicine
IntroductionDaily solar ultraviolet (UV) radiation has an important impact on skin health. Understanding the initial events of the UV-induced response is critical to prevent deleterious conditions.
Paola De Los Santos Gomez, Lydia Costello, Kirsty Goncalves, Stefan Przyborski, Stefan Przyborski   +4 more
doaj   +1 more source

Apoptosis kinetics of purified and PBMC‐associated lymphocytes after photopheresis‐like 8‐methoxypsolaren/UVA treatment

Photochemistry and Photobiology, EarlyView.
Extracorporeal photopheresis (ECP) induces apoptosis in circulating immune cells, but its kinetics vary slightly depending on the cell type. We compared the progression of apoptosis in PBMCs versus highly purified T cells exposed to 8‐methoxypsoralen and ultraviolet A.
Carlos Agustin Villegas‐Valverde, Imilla Casado Hernandez, Yandy Marx Castillo‐Aleman, Gisela Maria Suarez‐Formigo, Amar Riaz, Antonio Alfonso Bencomo‐Hernandez, Yendry Ventura‐Carmenate   +6 more
wiley   +1 more source

Aloe sterol supplementation improves skin elasticity in Japanese men with sunlight-exposed skin: a 12-week double-blind, randomized controlled trial

Clinical, Cosmetic and Investigational Dermatology, 2016
Miyuki Tanaka,1 Yuki Yamamoto,2 Eriko Misawa,1 Kazumi Nabeshima,1 Marie Saito,1 Koji Yamauchi,1 Fumiaki Abe,1 Fukumi Furukawa2 1Functional Food Ingredients Department, Food Ingredients & Technology Institute, Morinaga Milk Industry Co., Ltd., Zama ...
Tanaka M, Yamamoto Y, Misawa E, Nabeshima K, Saito M, Yamauchi K, Abe F, Furukawa F   +7 more
doaj