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Physiologically relevant concentrations of oxygen

Range	2% O2 - 21% O2
Organism	Unspecified
Reference	Peter Vance and Martin H Spalding, Growth, photosynthesis, and gene expression in Chlamydomonas over a range of CO2 concentrations and CO2/O2 ratios: CO2 regulates multiple acclimation states, Canadian Journal of Botany, 2005, 83(7): 796-809, link p.797 left column bottom paragraph
Comments	P.797 left column bottom paragraph: "Not only is a CCM [CO2-concentrating mechanism] induced when CO2 is limiting, but the photorespiratory pathway also changes. CO2 is concentrated at the site of Rubisco, but the photorespiratory pathway is not completely inhibited (Ramazanov and Cardenas 1991), even though varying the O2 concentration over physiologically relevant concentrations (2%–21% O2) has no reported effect on photosynthetic O2 evolution in C. reinhardtii (Berry et al. 1976: Spalding and Ogren 1982) or in Chlorella kessleri (Bozzo et al. 2000)."
Entered by	Uri M
ID	116800