INHIBITORS AND PHOTO PIGMENT SYNTHESIS 



59 



5-MT 



0.2 

 AO.D. AT 1000 mfi 



0.3 



0.4 



Fig. 5. Differential rate of bacteriochlorophyll synthesis in the pres- 

 ence of amytal and of 5-methyl-tryptophan {5-MT). The data of Figs. 

 3 and 4b have been replotted to show the increase in bacteriochloro- 

 phyll relative to increase in cell mass (OD at 1000 m^). 



