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Ontology Browser

Term:
Parent Terms Term With Siblings Child Terms
C4 photosynthesis +  
The combination of atmospheric CO2 with a 3-carbon molecule phosphoenol pyruvate (PEP) in the mesophyll cells to make a 4-carbon acid which is immediately converted to malic acid. The malic acid is then passed across to the bundle sheath cells where it is broken down again to pyruvic acid and CO2. The acid is passed back to the mesophyll cells to be used again, while the CO2 is fed into the reductive pentose-phosphate cycle (Calvin cycle) and converted into sugar and starch.
CAM photosynthesis 
carbon fixation by 3-hydroxypropionate cycle 
carbon fixation by acetyl-CoA pathway 
reductive pentose-phosphate cycle +  
reductive tricarboxylic acid cycle 
regulation of photosynthesis, dark reaction +  

Synonyms
Xrefs: Wikipedia:C4_carbon_fixation
Only In Taxon: NCBITaxon:33090 ! Viridiplantae
Definition Sources: ISBN:0816017360

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RGD is funded by grant HL64541 from the National Heart, Lung, and Blood Institute on behalf of the NIH.