IHE CHEMISTRY OF PHOTOSYNTHESIS 



167 



o 

 o 



130 



)20 



100 



Fig. 63. Decarboxylation of L-glutamic 

 acid under anaerobic conditions. 20 mg 

 Chlorella powder. pH 3.8, 20° C. Curve I: 

 3 ml salt solution in the manometer vessel. 

 Curve II: 3 ml salt solution + 4.8 yumole 

 L-glutamic acid in the manometer vessel. 

 a = 4.49 nmole COo; h = 0.96 yumole CO2 

 (Warburg et al., Zschr. Naturf.). 







10 



15 20 25 30 35 

 Duration of illumination in mm 



40 



Fig. 64. Influence of NaF on photosynthesis under aerobic conditions. 100 ^1 cells sus- 

 pended in 7 ml salt soludon in each manometer vessel. pH 3.8, 20° C. Gas phase: 10 vol 

 % CO.>, 30 vol % O.-, 60 vol % argon. Curve I.- without NaF; Vq = 10.808 ml, Kq, = 

 1.031 mm2, Kcoj = 1-624 mm^. Curve II: with 0.001 .V NaF; Vq = 10.624 ml, Kq, = 

 1.016 mm2, Kco2 = 1-609 mm-'. Incident light intensity: 200 yul quanta/min. Result: 

 pracucally no inhibition of photosynthesis (Warburg et al., Zschr. Naturf.). 



