16 02 Liberation and Co 2 Fixation in Photosyn
نویسنده
چکیده
In the process of photosynthesis in Cklorella it is now known that the oxygen liberated during CO2 fixation and reduction originates from water (Ruben et al., 1941). I t is further known that in some algae (not ChloreUa) one can obtain carbon dioxide fixation and reduction without the release of oxygen (by adaptation to hydrogen, Gaffron, 1940, 1942 a, 1942 b, Gaffron and Rubin, 1942) and that in isolated chloroplasts one can obtain oxygen (by the reduction of ferric salts, Hill, 1940, Hill and Scarisbrick, 1940 a, 1940 b) without a simultaneous reduction of carbon dioxide. I t therefore appears that, since the reactions of CO2 fixation and 02 liberation are only "loosely connected" (Franc& and Gaffron, 1941), it should be possible by the choice of an appropriate technique, to cause oxygen liberation in intact cells without the simultaneous reduction of carbon dioxide; i.e., to separate the reactions liberating oxygen from those concerned with carbon dioxide fixation. The results reported in this paper are based upon the concept that if such is indeed the case, it should be possible to obtain oxygen from illuminated Chlorella ceils by supplying reducible materials other than carbon dioxide.
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تاریخ انتشار 2003