Results 191 to 200 of about 11,814 (233)
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Photoinhibition – a historical perspective
Photosynthesis Research, 2003Photoinhibition is a state of physiological stress that occurs in all oxygen evolving photosynthetic organisms exposed to light. The primary damage occurs within the reaction center of Photosystem II (PS II). While irreversible photoinduced damage to PS II occurs at all light intensities, the efficiency of photosynthetic electron transfer decreases ...
Noam, Adir +3 more
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Photoinhibition in marine picocyanobacteria
Physiologia Plantarum, 2017Marine Synechococcus and Prochlorococcus cyanobacteria have different antenna compositions although they are genetically near to each other, and different strains thrive in very different illumination conditions. We measured growth and photoinhibition of PSII in two low‐light and one high‐light Prochlorococcus strains and in one Synechococcus strain ...
Arto Soitamo +2 more
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Photoinhibition of photosystem I
Planta, 2005Photosystem I (PSI) is a large pigment-protein complex consisting of about 18 different subunits in plants. Recently, the structure of PSI isolated from pea was solved by X-ray crystallography at a resolution of 4.4 A (Ben-Shem et al. 2003). This work has highlighted the structural similarities and differences between plant PSI and cyanobacterial PSI ...
Scheller, Henrik Vibe, Haldrup, Anna
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PHOTOINHIBITION OF CHLOROPLAST REACTIONS
Photochemistry and Photobiology, 1965Abstract— An attemlpt was made to localize the site of photoinhibition of photosynthesis by measuring the decay of various chloroplast reactions after exposure to very strong light. A11 substrate reductions coupled to oxygen evolution as well as photophosphorylation mediated by PMS, proved equally sensitive to photoinhibition.
B, Kok, E B, Gassner, H J, Rurainski
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Photoinhibition of Photosystem II
International Review of Cell and Molecular Biology, 2013Photoinhibition of Photosystem II (PSII) is the light-induced loss of PSII electron-transfer activity. Although photoinhibition has been studied for a long time, there is no consensus about its mechanism. On one hand, production of singlet oxygen ((1)O(2)) by PSII has promoted models in which this reactive oxygen species (ROS) is considered to act as ...
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Photoinhibition of Photosynthesis in Nature
Annual Review of Plant Physiology and Plant Molecular Biology, 1994CONTENTS INTRODUCTION ..... .... .... .... .... .... .... .... .... .... .... ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . .... .... .... 633 MECHANISMS ..... .... .... .... .... .... .... .... .... .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
S P Long, S Humphries, P G Falkowski
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2003
When photosynthetic organisms are exposed to higher irradiances which exceed their light energy requirement for photosynthetically operated metabolisms, a reduction of photosynthetic capacity, called photoinhibition, occurs [1, 2, 3]. Under excessive light conditions Ohad et al. [4] and Mattoo et al.
D. Hanelt, W. Nultsch
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When photosynthetic organisms are exposed to higher irradiances which exceed their light energy requirement for photosynthetically operated metabolisms, a reduction of photosynthetic capacity, called photoinhibition, occurs [1, 2, 3]. Under excessive light conditions Ohad et al. [4] and Mattoo et al.
D. Hanelt, W. Nultsch
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Dynamics of Phytoplankton Communities Under Photoinhibition
Bulletin of Mathematical Biology, 2013We analyzed a model of phytoplankton competition for light in a well-mixed water column. The model, proposed by Gerla et al. (Oikos 120:519-527, 2011), assumed inhibition of photosynthesis at high irradiance (photoinhibition). We described the global behavior through mathematical analyses, providing a general solution to the multi-species competition ...
Hsu, Sze-Bi +3 more
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Phytochrome and the Photoinhibition of Germination
Nature, 1967THE inhibition of seed germination by light in Nemophila insignis and Phacelia tanacetifolia depends on the far red part of the visible spectrum1–5. Red light has little or no activity1–4.
P. ROLLIN, G. MAIGNAN
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Photoinhibition at Chilling Temperatures
Australian Journal of Plant Physiology, 1988Relative susceptibilities of chilled leaves to photoinhibition were determined for 15 species of crop annuals showing a wide range of chilling tolerance. Leaf tissue at 7°C was exposed to a moderate photon irradiance of 300 µmol m-2 s-1 and photoinhibition was measured by the decrease in chlorophyll fluorescence (Fv/Fm) measured at 77K.
RM Smillie +3 more
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