PHOTOSYNTHESIS AND METABOLISM OF MARINE ALGAE: I. PHOTOSYNTHESIS OF TWO MARINE FLAGELLATES COMPARED WITH CHLORELLA

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Abstract
The products of photosynthesis of two marine flagellates have been examined and compared with those of Chlorella pyrenoidosa with the use of radioactive carbon and chromatographic techniques. The alcohol-soluble products were different in each alga, many of the compounds produced by the marine forms being unidentified. The principal soluble product of photosynthesis of a member of the Heterokontae, Olisthodiscus sp., was identified as d-mannitol. Those of a dinoflagellate, Amphidinium carteri, include glycosides of glucose and maunitol. The main insoluble carbohydrate produced by all three organisms gave rise to glucose on hydrolysis; this only contained about ten per cent of the total fixed carbon. The radioactive compounds released from the alcohol-insoluble residues by acid hydrolysis were similar in the three algae and consisted mainly of amino acids.

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