Ratio between the substomatal or intercellular and ambient air CO2 concentrations in C3 species

Range 0.65 to 0.80 unitless
Organism Plants
Reference Alistair M. Hetherington1 F. Ian Woodward. The role of stomata in sensing and driving environmental change. Nature. 2003 Aug 21 424(6951):901-8. p. 906 right column, 2nd paragraphPubMed ID12931178
Comments Plants with the C4 pathway of photosynthesis show greater rates of photosynthesis than those with the C3 pathway. There is also a close to constant ratio between the substomatal or intercellular CO2 concentration and the CO2 concentration in the ambient air. The ratio falls between about 0.65 and 0.8 for C3 species and between 0.4 and 0.6 for C4 species (BNID 101761).
Entered by Ben Marks
ID 101760