BIBLIOGRAPHY TO CHAPTER 13 347 



in strong light or in presence of abundant carbon dioxide. Alpine plants 

 continued to show stimulation at higher light intensities than plants from 

 the plains. Schiller (1937) observed that Spirogyra produced more 

 starch in radioactive water of Gastein springs than in a nonradioactive 

 medium. 



Stoklasa, Hruban, and Penkava (1930) found that alpha rays in- 

 hibit photosynthesis, beta rays inhibit it at first and stimulate it upon 

 prolonged irradiation, and gamma rays stimulate photosynthesis and 

 retard respiration. 



The strange hypothesis of Stoklasa that potassium affects photo- 

 synthesis by its radiation was mentioned on page 337. 



Nisina, Nakamura, and Nakayama (1940) observed the reduction in 

 photosynthesis by about 50% in Chlorella ellipsoidea after three hours of 

 irradiation with neutrons from a berryllium source. With Scenedesmus 

 nanus, no effect was observed after 10 min., a stimulation of a few per 

 cent after 30 min., and an inhibition of — 37% after two hours, while 

 respiration was unaffected even after three hours of irradiation. 



Bibliography to Chapter 13 

 Inhibitors and Stimulants 



A. Effect of Oxygen in Photosynthesis 



1865 Boussingault, J. B., Compt. rend., 61, 493, 605, 657. 



1887 Pringsheim, N., Sitzber. preuss. Akad. Wiss. Physik-math. Klasse, 



1887, 763. 

 1918 Willstatter, R., and Stoll, A., Untersuchungen iiber die Assimilation 



der Kohlensdure. Springer, Berlin, 1918. 

 1920 Warburg, 0., Biochem. Z., 103, 188. 

 1928 Harvey, E. N., Plant Physiol, 3, 85. 

 1931 Kautsky, H., Naturwissenschaften, 19, 964. 

 1933 Willstatter, R., ibid., 21, 252. 



Gaffron, H., Biochem. Z., 260, 1. 



Briggs, G. E., Proc. Roy. Soc. London B, 113, 1. 

 1935 Gaffron, H., Biochem. Z., 280, 337. 



Franck, J., Chem. Revs., 17, 433. 



1938 Wassink, E. C., Vermeulen, D., Reman, G. H., and Katz, E., Enzymo- 



logia, 5, 100. 



1939 Noack, K., Pirson, A., and Michels, H., Naturwissenschaften, 27, 645. 

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1940 Gaffron, H., Am. J. Botany, 27, 273. 

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Myers, J., and Burr, G. 0., /. Gen. Physiol., 24, 45. 

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1941 Franck, J., and French, C. S., J. Gen. Physiol., 25, 309. 



