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Plant and Cell Physiology, 1984, Vol. 25, No. 5 831-839
© 1984

Article

Effects of Light Quality on Formation of 5-Aminolevulinic Acid, Phycoerythrin and Chlorophyll in Cryptomonas sp. Cells Collected from the Subsurface Chlorophyll Layer

Akio Kamiya1 and Shigetoh Miyachi2

1Laboratory of Chemistry, Faculty of Pharmaceutical Sciences, Teikyo University Sagamiko, Kanagawa 199-01, Japan
2Institute of Applied Microbiology, University of Tokyo Bunkyo-ku, Tokyo 113, Japan

Phycoerythrin obtained from the cells of Cryptomonas sp. (Cryptophyceae) which had been isolated from the subsurface chlorophyll layer in the western Pacific Ocean showed peaks in absorption and fluorescence spectra at 545 and 586 nm, respectively. The rate of photosynthetic O2 evolution under green light was higher than those under blue and red light.

The rate of 5-aminolevulinic acid (ALA) accumulation in the presence of levulinic acid was higher under green light than under blue and red light. The effects of light quality on the rates of O2 evolution and ALA formation closely resembled each other. On the other hand, the formation of phycoerythrin and ALA was suppressed during growth under blue light.

Possible effects of light quality on the formation of photosynthetic pigments in Cryptomonas sp. were discussed.

(Received January 31, 1984; Accepted May 14, 1984)
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