Fraction of global primary biomass production that the Calvin–Benson–Bassham (CBB) cycle accounts for (but see comments)

Range >99 %
Organism Biosphere
Reference Young JD, Shastri AA, Stephanopoulos G, Morgan JA. Mapping photoautotrophic metabolism with isotopically nonstationary (13)C flux analysis. Metab Eng. 2011 Nov13(6):656-65. doi: 10.1016/j.ymben.2011.08.002. p.656 right columnPubMed ID21907300
Primary Source Overmann, J., Garcia-Pichel, F., 2006.The phototrophic way of life. In: Dworkin, M., Falkow, S. (Eds.), The prokaryotes: A handbook on the biology of bacteria, vol. 2. Springer, New York London, pp.32–85.
Comments "To date, six different pathways of carbon fixation have been identified in nature (Berg et al.,2010), of which the Calvin–Benson–Bassham (CBB) cycle accounts for more than 99% of global primary biomass production (primary source)." Actually, when referring to the primary source it only discusses anoxygenic fraction "Consequently, the amount of CO2 fixed by anoxygenic photosynthesis must contribute much less than 1 % to global primary production." (pg 204)." So the property (add the secondary ref) build on oxygenic PS to be using the CBB cycle. This logic is not strictly accurate as for example some green sulfur bacteria that use the rTCA cycle are oxygenic. Similarly, Chloroflexus that uses the 3-HP bicycle is also oxygenic. Yet these are quantitatively probably negligible and the value is probably still correct.
Entered by Uri M
ID 110995