How are photosynthesis and photorespiration different…
In normal air at 25°C, photorespiration decreases the efficiency of CO2 assimilation by 40%. This decrease in efficiency results from the use of ATP to phosphorylate glycerate and other costs associated with glycolate processing.
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Tabita FR, Satagopan S, Hanson TE et al. (2008) Distinct form I, II, III, and IV Rubisco proteins from the three kingdoms of life provide clues about Rubisco evolution and structure/function relationships. Journal of Experimental Botany 59: 1515–1524.
The resulting molecules are converted into starch and stored in the chloroplast or transported into the cytosol where they are converted to sugars, amino acids, and fatty acids.
Photorespiration is a process involving , in a light-dependent manner.
Photorespiration (video) | Photosynthesis | Khan Academy
The reaction of RUBISCO with oxygen and metabolic processing of the resulting 2-PG is called "photorespiration". It is called this because it only occurs in the light (mitochondrial respiration continues in darkness) and because it consumes oxygen and produces carbon dioxide, just like mitochondrial respiration. We will consider the two parts of photorespiration separately.
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It is believed that the Calvin cycle evolved early in the history of life on Earth, before the appearance of 2-photosystem, oxygen-evolving photosynthesis in the first cyanobacteria. At that time, the atmosphere of the Earth contained much more carbon dioxide than it does now and very little oxygen.
Photosynthesis vs Photorespiration - What's the …
Brestic M, Cornic G, Fryer MJ et al. (1995) Does photorespiration protect the photosynthetic apparatus in french bean leaves from photoinhibition during drought stress. Planta 196: 450–457.
Photorespiration - an overview | ScienceDirect Topics
Cegelski L and Schaefer J (2006) NMR determination of photorespiration in intact leaves using in vivo 13CO2 labeling. Journal of Magnetic Resonance 178: 1–10.
What happens during photorespiration.
Bauwe H (2010) Photorespiration – the bridge to C4 photosynthesis. In: Raghavendra AS and Sage R (eds) C4 Photosynthesis and Related CO2 Concentrating Mechanisms. New York: Springer.
Photorespiration - eLS: Essential for Life Science
Coschigano KT, Melo‐Oliveira R, Lim J et al. (1998) Arabidopsis gls mutants and distinct Fd‐GOGAT genes: implications for photorespiration and primary nitrogen assimilation. Plant Cell 10: 741–752.