Results 41 to 50 of about 10,674,979 (295)

Informing grassland ecosystem modeling with in-situ and remote sensing observations

open access: yesEnvironmental Research Letters
We simulated historical grassland aboveground plant productivity (ANPP) across the midwestern and western contiguous United States using the DayCent-UV ecosystem model.
Johny Arteaga   +4 more
doaj   +1 more source

Effects of UV-B Irradiation Time on Fruit Quality and Flavonoid Metabolites of Wine Grapes

open access: yesShipin gongye ke-ji
In order to explore the effect of UV-B irradiation time on the fruit quality and flavonoids of Cabernet Sauvignon wine grape, the experiment set up four gradients of UV-B irradiation for 2, 4, 6 and 8 h each day, with no UV-B irradiation as the control ...
Tian SHEN   +4 more
doaj   +1 more source

Differential responses to high- and low-dose ultraviolet-B stress in tobacco Bright Yellow-2 cells

open access: yesFrontiers in Plant Science, 2015
Ultraviolet (UV)-B irradiation leads to DNA damage, cell cycle arrest, growth inhibition, and cell death. To evaluate the UV-B stress–induced changes in plant cells, we developed a model system based on tobacco Bright Yellow-2 (BY-2) cells. Both low-dose
Shinya eTakahashi   +11 more
doaj   +1 more source

An unexpected alternative viologen electron mediator site in tungsten‐containing formate dehydrogenase

open access: yesFEBS Letters, EarlyView.
An unexpected alternative interaction site for ethyl viologen was identified in formate dehydrogenase 1 from Methylorubrum extorquens. Combined mutagenesis, kinetic analysis, and docking revealed that aromatic residues near an iron–sulfur cluster enable flavin mononucleotide‐independent electron transfer, offering a framework for engineering improved ...
Eleni G. Poloniataki, Yong Hwan Kim
wiley   +1 more source

Rapid reversion from monomer to dimer regenerates the ultraviolet-B photoreceptor UV RESISTANCE LOCUS8 in intact arabidopsis plants [PDF]

open access: yes, 2013
Arabidopsis (Arabidopsis thaliana) UV RESISTANCE LOCUS8 (UVR8) is a photoreceptor that specifically mediates photomorphogenic responses to ultraviolet (UV)-B in plants.
Jenkins, G.I., Heilmann, M.
core   +1 more source

Electron transfer between complexes III and IV in S. cerevisiae mitochondrial membranes

open access: yesFEBS Letters, EarlyView.
Mitochondrial oxidative phosphorylation in S. cerevisiae mitoplasts is limited by complex IV catalytic capacity, rather than two‐dimensional cytochrome c diffusion. At physiological cytochrome c : supercomplex ratios at salinity equivalent to that of 20 mm monovalent salt, activity is maximized, indicating that this low ionic strength accurately mimics
Ana Paula Lobez   +2 more
wiley   +1 more source

Quantitative Analysis of UV-B Radiation Interception and Bioactive Compound Contents in Kale by Leaf Position According to Growth Progress

open access: yesFrontiers in Plant Science, 2021
UV-B (280–315 nm) radiation has been used as an effective tool to improve bioactive compound contents in controlled environments, such as plant factories.
Hyo In Yoon   +4 more
doaj   +1 more source

Existing antioxidant levels are more important in acclimation to supplemental UV-B irradiation than inducible ones: Studies with high light pretreated tobacco leaves [PDF]

open access: yes, 2012
Greenhouse grown tobacco plants were exposed to supplemental ultraviolet irradiation (280-400 nm, UV-B centered) for 6 days and changes in their photosynthesis (gas exchange and electron transport) and general and specific antioxidant activities were ...
Majer, Petra, Hideg, Éva
core  

Terrestrial ecosystems, increased solar ultraviolet radiation and interactions with other climatic change factors

open access: yes, 2007
Based on research to date, we can state some expectations about terrestrial ecosystem response as several elements of global climate change develop in coming decades.
Tevini, Manfred   +7 more
core   +1 more source

Effects of natural solar UV-B radiation on three Arabidopsis accessions are strongly affected by seasonal weather conditions [PDF]

open access: yes, 2018
Large numbers of studies have reported on the responses of plants that are exposed to a specific dose of ultraviolet-B (UV-B) radiation. However, in the natural environment UV-B is a highly dynamic variable with UV-B intensities depending on, amongst ...
Aoife Coffey   +3 more
core   +1 more source

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