Results 71 to 80 of about 209,633 (263)

Individual and interactive effects of temperature, carbon dioxide and abscisic acid on mung bean (Vigna radiata) plants

Journal of Plant Interactions, 2017
We studied the effects of temperature, carbon dioxide and abscisic acid on mung bean (Vigna radiata). Plants were grown under 26/22°C or 32/28°C (16 h light/8 h dark) at 400 or 700 μmol mol−1 CO2 and received ABA application of 0 or 100 μl (10 μg) every ...
Megan E. Reardon, Mirwais M. Qaderi
doaj   +1 more source

Excitation energy transfer and trapping in higher plant photosystem II complexes with different antenna sizes [PDF]

, 2011
700 cm(-1)) and a slow relaxation of the radical pair to an irreversible state (similar to 150 ps). Somewhat unexpectedly, we had to reduce the energy-transfer and charge-separation rates in complexes with decreasing size to obtain optimal fits.
van Amerongen, H., Koen Broess, Roberta Croce, Amerongen, H., van, Croce, R., Broess, Koen, Stefano Caffarri, Croce, R.; id_orcid, Croce, Roberta, Herbert van Amerongen, Caffarri, Stefano, Broess, K., Caffarri, S., van Amerongen, Herbert   +13 more
core   +1 more source

Non-photochemical quenching speeds up with increasing temperatures

Biochimica et Biophysica Acta (BBA) - Bioenergetics
Photosynthesis constantly adapts to fluctuating light and temperature. Under high light, non-photochemical quenching (NPQ) protects the photosynthetic machinery by dissipating excess excitation energy as heat. With rising global temperatures and more frequent heat events, understanding how photosynthesis responds to combined light and temperature ...
Verhoeven, Dana, Hogenes, Valérie, Knol, Silke, van der Velde, Elza, van Amerongen, Herbert, Saccon, Francesco, Wientjes, Emilie   +6 more
openaire   +2 more sources

Near‐Infrared Imaging of H2O2 in Plants With Nanosensors Under Environmentally Changing Conditions

Advanced Materials, EarlyView.
This paper reports a ratiometric nanosensor enabling robust, multivariate detection of stress signals (H2O2) in plants, with high resistance to light fluctuations and mechanical disturbances. Single‐walled carbon nanotubes serve as the sensor, Egyptian Blue nanosheets serve as a stable reference, and plant autofluorescence serves as a label‐free ...
Jiaqi Li, Bjoern F. Hill, Chen Ma, Juliana Gretz, Tanuja Kistwal, Janus A. C. Wartmann, Justus T. Metternich, Juan Pablo Giraldo, Sebastian Kruss   +8 more
wiley   +1 more source

Leaf Growth, Gas Exchange and Chlorophyll Fluorescence Parameters in Response to Different Water Deficits in Wheat Cultivars

Plant Production Science, 2011
We investigated responses of wet climate (CY17) and dry climate (XN889) Trititcum aestivum L cultivars under 85, 55 and 25% field water capacity (FC). Less decrease in grain yield, relative water content, growth, gas exchange and chlorophyll fluorescence
Xiaoli Wu, Weikai Bao
doaj   +1 more source

Kurzzeitspektroskopische Untersuchungen der Fotoschutzmechanismen an Lichtsammelkomplexen [PDF]

, 2009
In der vorliegenden Arbeit wurden die Photoschutzmechanismen in Pflanzen und Purpurbakterien auf molekularer Ebene experimentell untersucht. Zu diesem Zweck kamen verschiedene spektroskopische Methoden zur Aufklärung der Funktion der dabei vor allem ...
Amarie, Sergiu
core  

Tailored Cationic Visible‐Light‐Active Interfaces for Sustainable, Biodegradable Nanofibers With Dual‐Mode Antimicrobial Activity and Robust Electrostatic Particle Capture

Advanced Materials, EarlyView.
Surface co‐functionalization of biodegradable nanofibers with sodium copper chlorophyllin and quaternary ammonium compounds achieves synergistic antimicrobial activity through combined photodynamic and contact‐killing mechanisms. The cationic surface provides humidity‐resistant electrostatic particle capture while maintaining rapid enzymatic ...
Dong Uk Lee, Jae Hak Shin, Seung Yeon Lee, In Ho Kim, Jiho Choi, Joon Young Park, Sang Bok Kim, Jeong Sang Son, Sang Hun Kim, Jae Hee Jung, Dong Yun Choi   +10 more
wiley   +1 more source

Red‐Light Tomographic Volumetric 3D Printing in Seconds for Fabrication of Colorless Structures

Advanced Materials Technologies, EarlyView.
A custom red‐light‐responsive TVAM platform combines methylene blue, triethanolamine, and PEGDA to fabricate transparent crosslinked hydrogels. Light patterns are projected into a rotating resin container, where a sacrificial photoinitiator system enables rapid polymerization and colorless channel‐containing structures, utilizing low‐energy light for ...
Ali Eftekhari, Qianyi Zhang, Shahla Radmehr, Felix Wechsler, Riccardo Rizzo, Ville Santala, Minna Kellomäki, Alexander Efimov, Timo Laaksonen, Christophe Moser   +9 more
wiley   +1 more source

Dynamic Fluorescence Modulation via Light‐Driven Competitive Protonation

Advanced Optical Materials, EarlyView.
A two‐component molecular system demonstrates reversible, light‐driven fluorescence write–erase cycling and thermal imaging. Illumination of a merocyanine photoacid transfers a proton to a highly efficient fluorescent pyridinium dye, switching its emission color; thermal relaxation reverses the process in the dark.
Serena X. Liu, Moritz E. Kleybolte, Colin van Dyck, Sergey I. Vagin, Preeti Gahtori, Antonio Scarpati, Razieh Firouzihaji, Diogo A. Galico, Ulrich S. Schubert, Julianne Gibbs, Alkiviathes Meldrum   +10 more
wiley   +1 more source

Salinity reduced growth PS2 photochemistry and chlorophyll content in radish Crescimento reduzido por salinidade, fotoquímica PS2 e conteúdo de clorofila em rabanete

Scientia Agricola, 2007
When plants are grown under saline conditions, photosynthetic activity decreases leading to reduced plant growth, leaf area, chlorophyll content and chlorophyll fluorescence.
Muhammad Jamil, Shafiq ur Rehman, Kui Jae Lee, Jeong Man Kim, Hyun-Soon Kim, Eui Shik Rha   +5 more
doaj   +1 more source