Results 161 to 170 of about 731 (201)
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In vivo regulation of proton motive force during photosynthetic induction
Environmental and Experimental Botany, 2018Abstract Thylakoid proton motive force (pmf) plays a central role in photosynthesis. However, the regulation of pmf during photosynthetic induction is not well known. In the present study, in order to investigate the importance of cyclic electron flow (CEF) and chloroplastic ATP synthase in pmf formation during photosynthetic induction, we examined ...
Wei Huang, Shi-Bao Zhang
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Fluorescence studies of the photosynthetic induction period
Biochimica et Biophysica Acta (BBA) - Specialized Section on Biophysical Subjects, 1964Abstract The fluorescence intensity of green leaves at the beginning of an irradiation period is lower than at the subsequent steady state of illumination. This is interpreted in terms of the adsorption in the dark of plant metabolites at an active chlorophyll surface and of their photochemical reduction in the first few seconds of strong irradiation.
J L, ROSENBERG, T, BIGAT, S, DEJAEGERE
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PHOTOSYNTHETIC INDUCTION IN MARINE ALGAE
Canadian Journal of Botany, 1956Effects of dark time and of oxygen supply upon photosynthetic induction in Ulva were investigated polarographically and manometrically. Under continuously aerobic conditions, the induction period was of about two minutes' duration following one day in darkness in flowing sea water; beyond 10 min., length of the aerobic dark period had little effect ...
K. A. Clendenning, F. T. Haxo
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Factors affecting photosynthetic induction in spinach leaves
Biochimica et Biophysica Acta (BBA) - Bioenergetics, 1986Abstract Induction of photosynthetic carbon assimilation in spinach leaves in saturating CO2 has been studied in relation to such factors as the length of the preceding dark period, intensity of pre-illumination, irradiance and the phosphate status of the leaf, through measurements of O2 evolution and of changes in leaf metabolites. (i) In low light,
Roslyn T. Prinsley, Richard C. Leegood
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Reduced minimum model for the photosynthetic induction processes in photosystem I
Journal of Photochemistry and Photobiology B: Biology, 2016Photosystem I (PS I) is one of the most important protein complexes for photosynthesis, which is present in plants, algae and cyanobacteria. A variety of mechanisms for environmental response in and around PS I have been elucidated experimentally and theoretically.
Takeshi Matsuoka +2 more
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Early detection of mercury contamination by fluorescence induction of photosynthetic bacteria
Photochemical & Photobiological Sciences, 2010The induction (sudden dark-to-light transition) of fluorescence of photosynthetic bacteria has proved to be sensitive tool for early detection of mercury (Hg(2+)) contamination of the culture medium. The major characteristics of the induction (dark, variable and maximum fluorescence levels together with rise time) offer an easier, faster and more ...
Emese, Asztalos +4 more
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Fluorescence Induction in Photosynthetic Bacteria
1972Many experiments were in favor of the assumption that the Kautsky effect may be attributed to electron exchange reactions between the photosystem II and the redox chain leading to photosystem I.That means the cooperation between two photoreactions should be responsible for the induction phenomena.
W. Hoffmann, H. Metzner
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Photosynthetic induction in C4 leaves
Planta, 1985Simultaneous measurements of CO2 uptake, transpiration rate, and chlorophyll a fluorescence in leaf strips of C4 plants during the induction phase of photosynthesis are described. The timecourse of CO2 fixation is biphasic with the initial phase occurring within the first 1 to 5 min and the secondary phase consisting of a slow rise to the steady-state ...
R T, Furbank, D A, Walker
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Chloroplast Energization During Photosynthetic Induction
1987Although photosynthetic induction [1] and fluorescence induction (Kautsky effect) are not synonymous, experimental evidence indicates that fluorescence kinetics are closely related to the complexities of induction and its termination. Early studies of chlorophyll fluorescence kinetics in a physiological context were mainly descriptive (for reviews see ...
Mirta N. Sivak, David A. Walker
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Induction of Photosynthetic Oxygen Evolution in Spinach Leaves
1984When leaves are illuminated, the rate of oxygen evolution does not immediately reach its maximum steady state value. The time between the onset of illumination and the attainment of this maximum steady state rate is called the induction period. Induction in chloroplasts has been extensively studied (for review see Walker,1981) but this knowledge has ...
Roslyn T. Prinsley +2 more
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