Abstract
The unicellular green algaChlorella protothecoides was grown in the presence of various concentrations (30–300 µM) of the herbicide SANDOZ 9785 (4-chloro-5-(dimethylamino)-2-phenyl-3 (2H) pyridazinone). When the cells were grown autotrophically in the presence of the herbicide, there was a decrease in chlorophylls and carotenoids estimated on culture volume basis compared to the control. The absorption spectra of carotenes and colourless precursors extracted from photosynthetic particles showed that there was a higher carotenoid precursors/carotene ratio in the treated cells. Similarly the carotenoid precursors/xanthophyll ratio was increased by SANDOZ 9785 treatment. Chlorophylla synthesis appeared to be inhibited more than chlorophyllb synthesis in SANDOZ 9785 treated cells resulting in a decrease in the chlorophylla/b ratio.
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Abbreviations
- SAN 6706:
-
SANDOZ 6706 (4-chloro-5-(dimethylamrao)-2-(α, α, α, a-trifluoro-m-tolyl-3-(2H) pyridazinone)
- SAN 9789:
-
SANDOZ 9789 (4-chloro-5-(methylamino)-2-(α, α, α-trifluoro-m-tolyl-3-(2H) pyridazinone)
- SAN 9785:
-
SANDOZ 9785 (4-chloro-5-dimethylamino-2-phenyl-3(2H) pyridazinone)
- Chl:
-
chlorophyll
- PS:
-
photosystem
References
Burns, E. F., Buchanan, G. A. and Carter, M. C. (1971)Plant Physiol.,47, 144.
Davies, B. H. (1965) inChemistry and Biochemistry of Plant Pigments (ed. T. W. Goodwin) (London: Academic Press) p. 111.
Herczeg, T., Lehoczki, E., Rojik, I., Vass, I., Farkas, T. and Szalay, L. (1980)Plant Sci. Lett.,19, 285.
Holden, M. (1965) inChemistry and Biochemistry of Plant Pigments (ed. T. W. Goodwin) (London: Academic Press) p. 488.
Karapetyan, N. V., Slrasser, R. and Boger, P. (1983)Z. Naturforsch.,C38, 556.
Khan, M., Lem, H. W., Chandarkar, K. R. and Williams, J. P. (1979)Plant Physiol.,64, 300.
Mackinney, G. (1941)J. Biol. Chem.,140, 315.
Mannan, R. M. and Bose, S. (1985)Indian J. Biochem. Biophys.,22, 211.
Metzner, H., Rau. H. and Senger, H. (1965)Planta,65, 186.
Robbelen, G. (1957)Z. Vererbungsl,88, 113.
Sandmann, G., Kunnert. K. J. and Boger, P. (1981)Pestic. Biochem. Physiol.,14, 185.
Sandmann, G. and Boger, P. (1983) inBiochemical Responses Induced by Herbicides (eds D. E. Moreland, J. B. St. John and F. D. Hess) (Washington D. C: American Chemical Society) p. 111.
Senger, H. and Oh-Hama, T. (1976)Plant Cell Physiol.,17, 551.
St. John. J. B. (1976)Plant Physiol.,57, 38.
Urbach, D., Suchanka, M. and Urbach, S. (1976)Z. Naturforsch.,C31, 652.
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Samuel, K., Bose, S. Bleaching of photosynthetic pigments inChlorella protothecoides grown in the presence of SANDOZ 9785 (4-chloro-5-dimethylamino-2-phenyl-3 (2H) pyridazinone). J. Biosci. 12, 399–404 (1987). https://doi.org/10.1007/BF02898589
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DOI: https://doi.org/10.1007/BF02898589