Abstract
IN some of the Chlorococcales the biosynthesis of secondary carotenoids (astaxanthin-esters and canthaxanthin1) and the complete decomposition of the primary pigments (chlorophyll a and b, carotenes and xanthophylls) in conditions of nitrogen deficiency can be inhibited by chloramphenicol2. With 5 × 10−5 molar chloramphenicol, growth is reduced to about 85 per cent of the normal rate. Chloramphenicol has no influence on the biosynthesis of the nitrate reducing enzymes in these algae3, and this insensitivity seems to be partly caused by the ability of these organisms to decompose chloramphenicol4.
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References
Czygan, F.-C., Experientia, 20, 573 (1964).
Czygan, F.-C., Arch. Mikrobiol., 47, 251 (1964).
Czygan, F.-C., Naturwissenschaften, 51, 244 (1964).
Czygan, F.-C., Naturwissenschaften, 51, 541 (1964).
Kessler, E., Langner, W., Ludewig, I., and Wiechmann, H., Studies on Microalgae and Photosynthetic Bacteria, 7 (1963).
Soeder, C. J., Studies on Microalgae and Photosynthetic Bacteria, 21 (1963).
Kessler, E., and Czygan, F.-C., Arch. Mikrobiol. (in the press).
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CZYGAN, FC. Effect of Chloramphenicol on Mutants of Chlorella pyrenoidosa. Nature 212, 960 (1966). https://doi.org/10.1038/212960a0
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DOI: https://doi.org/10.1038/212960a0
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