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Photorespiration may be necessary for the assimilation of nitrate from soil. Thus, a lowering in photorespiration by genetic engineering or because of increasing atmospheric carbon dioxide may not benefit plants as has been proposed. [13] Several physiological processes may be responsible for linking photorespiration and nitrogen assimilation.
C3 carbon fixation is prone to photorespiration (PR) during dehydration, accumulating toxic glycolate products. In the 2000s scientists used computer simulation combined with an optimization algorithm to figure out what parts of the metabolic pathway may be tuned to improve photosynthesis.
2 in photorespiration. The rate of photorespiration is higher at high temperatures. Photorespiration turns RuBP into 3-PGA and 2-phosphoglycolate, a 2-carbon molecule that can be converted via glycolate and glyoxalate to glycine. Via the glycine cleavage system and tetrahydrofolate, two glycines are converted into serine plus CO 2. Serine can ...
In plant physiology, the Warburg effect is the decrease in the rate of photosynthesis due to high oxygen concentrations. [1] [2] Oxygen is a competitive inhibitor of carbon dioxide fixation by RuBisCO which initiates photosynthesis. Furthermore, oxygen stimulates photorespiration which reduces photosynthetic output. These two mechanisms working ...
C3 plants do not grow well in very hot or arid regions, in which C4 and CAM plants are better adapted. The isotope fractionations in C3 carbon fixation arise from the combined effects of CO 2 gas diffusion through the stomata of the plant, and the carboxylation via RuBisCO. [1] Stomatal conductance discriminates against the heavier 13 C by 4.4 ...
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C 4 photosynthesis reduces photorespiration by concentrating CO 2 around RuBisCO. To enable RuBisCO to work in a cellular environment where there is a lot of carbon dioxide and very little oxygen, C 4 leaves generally contain two partially isolated compartments called mesophyll cells and bundle-sheath cells.
"They better get the hell out of the way," Homan said last week, regarding the governors of sanctuary states. "Either you help us or get the hell out of the way, because ICE is going to do their job."
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related to: during photorespiration oxygen binds to the blood to make it grow better