enow.com Web Search

Search results

  1. Results from the WOW.Com Content Network
  2. Photorespiration - Wikipedia

    en.wikipedia.org/wiki/Photorespiration

    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.

  3. Photosynthesis - Wikipedia

    en.wikipedia.org/wiki/Photosynthesis

    The physical separation of RuBisCO from the oxygen-generating light reactions reduces photorespiration and increases CO 2 fixation and, thus, the photosynthetic capacity of the leaf. [31] C 4 plants can produce more sugar than C 3 plants in conditions of high light and temperature.

  4. Photosynthetic efficiency - Wikipedia

    en.wikipedia.org/wiki/Photosynthetic_efficiency

    In Crassulacean acid metabolism (CAM), time isolates functioning RuBisCO (and the other Calvin cycle enzymes) from high oxygen concentrations produced by photosynthesis, in that O 2 is evolved during the day, and allowed to dissipate then, while at night atmospheric CO 2 is taken up and stored as malic or other acids. During the day, CAM plants ...

  5. Warburg effect (plant physiology) - Wikipedia

    en.wikipedia.org/wiki/Warburg_effect_(plant...

    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 ...

  6. Calvin cycle - Wikipedia

    en.wikipedia.org/wiki/Calvin_cycle

    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 ...

  7. C3 carbon fixation - Wikipedia

    en.wikipedia.org/wiki/C3_carbon_fixation

    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.

  8. Klobuchar says she can't make a decision on Trump nominees ...

    www.aol.com/klobuchar-says-she-cant-decision...

    During Trump's first term, Klobuchar voted against both of his attorney general nominees, Jeff Sessions and William Barr, but voted yes on about half of his nominees. MORE: Hagerty: The public ...

  9. Compensation point - Wikipedia

    en.wikipedia.org/wiki/Compensation_point

    The CO 2 compensation point (Γ) is the CO 2 concentration at which the rate of photosynthesis exactly matches the rate of respiration. There is a significant difference in Γ between C 3 plants and C 4 plants: on land, the typical value for Γ in a C 3 plant ranges from 40–100 μmol/mol, while in C 4 plants the values are lower at 3–10 μmol/mol. Plants with a weaker CCM, such as C2 ...