Zobrazeno 1 - 10
of 67
pro vyhledávání: '"Wim J. Vredenberg"'
Autor:
Govindjee Govindjee, Wim J. Vredenberg
Publikováno v:
Photosynthesis Research
We provide here a brief Tribute to Christiaan Sybesma (1928–2018), a highly respected biophysicist of our time. We remember him by giving a brief highlight of his life and a glimpse of his outstanding contributions in photosynthesis. He was a charm
Publikováno v:
Journal of Photochemistry and Photobiology. B, Biology, 107, 45-54
Journal of Photochemistry and Photobiology B: Biology
Journal of Photochemistry and Photobiology. B, Biology 107 (2012)
Journal of Photochemistry and Photobiology B: Biology
Journal of Photochemistry and Photobiology. B, Biology 107 (2012)
Paper describes chlorophyll a fluorescence measurements in algal cells, and intact plant leaves and isolated chloroplasts. It focuses on amplitude and 10 μs-resolved kinetics of variable fluorescence responses upon excitation with fluorescence-satur
Publikováno v:
Biochimica et Biophysica Acta. B, Bioenergetics 1797 (2010) 8
Biochimica et Biophysica Acta. B, Bioenergetics, 1797(8), 1521-1532
Biochimica et Biophysica Acta. B, Bioenergetics, 1797(8), 1521-1532
Redox transients of chlorophyll P700, monitored as absorbance changes Δ A 810 , were measured during and after exclusive PSI excitation with far-red (FR) light in pea ( Pisum sativum , cv. Premium) leaves under various pre-excitation conditions. Pro
Autor:
Wim J. Vredenberg
Publikováno v:
Journal of Photochemistry and Photobiology B: Biology. 91:58-65
The algorithm for simulation of the OJDIP fluorescence induction curve in chloroplasts under variable conditions is presented. It is derived from analyzes of chlorophyll a fluorescence kinetics upon excitation with single- (STF), twin- (TTF) and repe
Autor:
Wim J. Vredenberg
Publikováno v:
Photosynthesis Research, 96(1), 83-97
Photosynthesis Research 96 (2008) 1
Photosynthesis Research 96 (2008) 1
The fluorescence induction F(t) of dark-adapted chloroplasts has been studied in multi-turnover 1 s light flashes (MTFs). A theoretical expression for the initial fluorescence rise is derived from a set of rate equations that describes the sequence o
Publikováno v:
Photosynthesis Research 93 (2007) 1-3
Photosynthesis Research, 93(1-3), 183-192
Photosynthesis Research, 93(1-3), 183-192
Chlorophyll fluorescence is routinely taken as a quantifiable measure of the redox state of the primary quinone acceptor Q(A) of PSII. The variable fluorescence in thylakoids increases in a single turnover flash (STF) from its low dark level F (o) to
Publikováno v:
Bioelectrochemistry 68 (2006) 1
Bioelectrochemistry, 68(1), 81-88
Bioelectrochemistry, 68(1), 81-88
A set of expressions is derived which quantifies the chlorophyll fluorescence yield in terms of rate constants of primary light reactions of PSII, the fraction of open and semi-open RCs and of the electric field sensed by the RC in the thylakoid memb
Publikováno v:
Planta 218 (2003)
Planta, 218, 143-151
Planta, 218, 143-151
Pulse-amplitude modulated microfluorometry and an extracellular pH microprobe were used to examine light-induced spatial heterogeneity of photosynthetic and H+-transporting activities in cells of Chara corallina Klein ex Willd. Subcellular domains fe
Publikováno v:
Bioelectrochemistry, 60(1), 87-95
Bioelectrochemistry 60 (2003) 1
Bioelectrochemistry 60 (2003) 1
Fluorescence induction curves (F(t)) in low intensity 1s light pulses have been measured in leaf discs in the presence and absence of valinomycin (VMC). Addition of VMC causes: (i) no effect on the initial fluorescence level Fo and the initial (O-J)
Publikováno v:
Photosynthesis Research. 78:35-46
The effects of Photosystem II inhibiting herbicides, 3-(3,4-dichlorophenyl)-1,1-dimethylurea (diuron), atrazine and two novel 2-benzylamino-1,3,5-triazine compounds, on photosynthetic oxygen evolution and chlorophyll a fluorescence induction were mea