Results 21 to 30 of about 1,725 (157)

Effect of nano-TiO2 and Salicylic Acid Foliar Application on Some Biochemical Changes of Corn S.C. 704 (Zea mays L.) under Water Deficit Stress [PDF]

open access: yesپژوهشهای زراعی ایران, 2020
IntroductionDrought is one of the most important causes of decline in agricultural productivity worldwide. TiO2 is one of the materials that nowadays, its properties have been reported to reduce environmental impact.
F Sharghi, E Khalilvand Behrouzyar
doaj   +1 more source

Nitrogen Addition Exacerbates the Negative Effects of Low Temperature Stress on Carbon and Nitrogen Metabolism in Moss

open access: yesFrontiers in Plant Science, 2017
Global environmental changes are leading to an increase in localized abnormally low temperatures and increasing nitrogen (N) deposition is a phenomenon recognized worldwide. Both low temperature stress (LTS) and excess N induce oxidative stress in plants,
Bin-Yang Liu   +3 more
doaj   +1 more source

Magnesium- a Forgotten Element: Phenotypic Variation and Genome Wide Association Study in Turkish Common Bean Germplasm

open access: yesFrontiers in Genetics, 2022
Magnesium (Mg) is the fourth most abundant element in the human body and plays the role of cofactor for more than 300 enzymatic reactions. In plants, Mg is involved in various key physiological and biochemical processes like growth, development ...
Faheem Shehzad Baloch   +11 more
doaj   +1 more source

Beyond binding change: the molecular mechanism of ATP hydrolysis by F1-ATPase and its biochemical consequences

open access: yesFrontiers in Chemistry, 2023
F1-ATPase is a universal multisubunit enzyme and the smallest-known motor that, fueled by the process of ATP hydrolysis, rotates in 120o steps. A central question is how the elementary chemical steps occurring in the three catalytic sites are coupled to ...
Sunil Nath
doaj   +1 more source

Oscillation kinetics of post-illumination increase in Chl fluorescence in Cyanobacterium Synechocystis PCC 6803

open access: yesFrontiers in Plant Science, 2016
After termination of longer-illumination (more than 30 s), the wild type of Synechocystis PCC 6803 showed the oscillation kinetics of post-illumination increase in Chl fluorescence: a fast phase followed by one or two slow phases.
Min eXu   +3 more
doaj   +1 more source

Products of the Photophosphorylation Reaction

open access: yesJournal of Biological Chemistry, 1970
Abstract Most determinations of the stoichiometric relationship between electron transport and phosphorylation have employed radioactive orthophosphate and have been based on the assumption that ADP-dependent incorporation of radioactivity can be safely equated to ATP synthesis.
S, Saha, N E, Good
openaire   +2 more sources

Function and regulation of Vibrio campbellii proteorhodopsin: acquired phototrophy in a classical organoheterotroph.

open access: yesPLoS ONE, 2012
Proteorhodopsins (PRs) are retinal-binding photoproteins that mediate light-driven proton translocation across prokaryotic cell membranes. Despite their abundance, wide distribution and contribution to the bioenergy budget of the marine photic zone, an ...
Zheng Wang   +6 more
doaj   +1 more source

Photophosphorylation and the chemiosmotic perspective [PDF]

open access: yesPhotosynthesis Research, 2002
Photophosphorylation was discovered in chloroplasts by D. Arnon and coworkers, and in bacterial 'chromatophores' (intercytoplasmic membranes) by A. Frenkel. Initial low rates were amplified by adding electron-carrying compounds such as FMN, later shown to support the 'pseudocyclic' electron flow.
openaire   +2 more sources

Structure and Function of Siberian Stone Pine Assimilation Apparatus in Central Altai Mounteens [PDF]

open access: yesЖурнал Сибирского федерального университета: Серия Биология, 2009
Needle morphology, photosynthetic pigment contents and chloroplast functional activity were measured in the four Siberian Stone pine stands: the subalpine (1570 and 1700 m asl) and the timberline (1900 and 2000 m asl).
Albina P. Zotikova, Olga. G. Bender
doaj  

Environmental Concentrations of PFOS Accumulate in the Euglena Eyespot and Impair Chloroplast ATP Synthase Activity: A Dual Impairment of Phototaxis and Photosynthetic Light Reactions

open access: yesToxics
Perfluorooctane sulfonate (PFOS) is a persistent organic pollutant widely detected in aquatic ecosystems, but its subcellular targets and the mechanisms by which it disrupts light resource utilization in photosynthetic protozoa remain poorly understood ...
Peirui Liu   +7 more
doaj   +1 more source

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