Results 31 to 40 of about 13,087 (217)
Ribulose-1,5-bisphosphate carboxylase/oxygenase, the key enzyme of photosynthetic carbon fixation, is able to accept both O2 and CO2 as substrates. When it fixes O2, it produces 2-phosphoglycolate, which is detoxified by photorespiration and recycled to ...
Su-Hyeon Shim +8 more
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Photosynthesis and Photorespiration in Algae [PDF]
The CO(2) exchange of several species of fresh water and marine algae was measured in the laboratory to determine whether photorespiration occurs in these organisms. The algae were positioned as thin layers on filter paper and the CO(2) exchange determined in an open gas exchange system.
N D, Lloyd, D T, Canvin, D A, Culver
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Intrinsic Fluctuations in Transpiration Induce Photorespiration to Oxidize P700 in Photosystem I
Upon exposure to environmental stress, the primary electron donor in photosystem I (PSI), P700, is oxidized to suppress the production of reactive oxygen species that could oxidatively inactivate the function of PSI.
Riu Furutani +5 more
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Effects of Deficit Irrigation and Huanglongbing on Sweet Orange Trees
This study addresses the interactive effects of deficit irrigation and huanglongbing (HLB) infection on the physiological, biochemical, and oxidative stress responses of sweet orange trees.
Jefferson Rangel da Silva +5 more
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Photorespiration coupled with CO2 assimilation is thought to act as a defense system against photoinhibition caused by osmotic stress. In the present study, we examined whether such a mechanism is operative for the protection of photosystem I (PSI) in ...
Shinya Wada +4 more
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THE EFFECT OF LOW TEMPERATURE AND CADMIUM ON THE PHOTORESPIRATION RATE OF WHEAT SEEDLINGS
The effects of separate and combined exposure to a low hardening temperature (4°C) and cadmium sulfate (100 μM) on the visible photorespiration rate in the leaves of winter wheat seedlings (Triticum aestivum L.) were investigated.
Ekaterina Kholoptseva, Vera Talanova
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The impact of salinity on the physiological and biochemical parameters of tolerant (‘Bonica’) and susceptible (‘Black Beauty’) eggplant varieties (Solanum melongena L.) was determined.
Sami Hannachi +5 more
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A New View on the Global Redox-Cycle of Biosphere Carbon
The global carbon cycle model is presented as a natural self-regulating machine that provides renewable biomass synthesis during evolution. The machine consists of two parts, geological and biosphere. Between the parts, there is an interaction.
A. A. Ivlev
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An Evaluation of the Recycling in Measurements of Photorespiration [PDF]
All measurements of photorespiration and gross photosynthesis in leaves, whether using isotopes or not, are underestimated because of the recycling of O(2) or CO(2). On the basis of a simple diffusion model, we propose a method for the calculation of the recycling and the corresponding underestimation of the measurements.
Gerbaud, A., André, M.
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Characteristics of photosynthesis in four rare ornamental bamboo species
The gas exchange, chlorophyll fluorescence properties and absorbed light allocation were investigated in four bamboo species: Phyllostachys aurea cv. luteosulcata, Phyllostachys aurea cv. viridisulcata, Phyllostachys aureosulcata f.
ZHANG Lei, JIN Song-heng, FANG Wei
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