Abstract
The turnover time of photosynthetic oxygen production was the same, near 0.5 msec, for the seaweeds Ulva lactuca, Codium fragile, Porphyryaumbilicalis, Chondrus crispus, Champia parvula and Fucus vesiculosis. This turnover time did not change for sun- and shade-adapted U. lactuca and P. umbilicalis. The similarity of these turnover times to those of other algae, higher plants, and cyanobacteria is strong evidence for similarity in the kinetics, and thus for a universal mechanism of photosynthesis. Evolution in the light-gathering apparatus responsible for the color of seaweeds has occurred without variation in the mechanism of photosynthesis. The size of the Emerson-Arnold photosynthetic unit (the ratio of chlorophyll to oxygen formed in a single tumover light flash) in the green seaweeds is about the same as that in algae, i.e., 2000. It is about half this number for the red and brown seaweeds. The different accessory pigments in the latter two groups compensate for the smaller amount of chlorophyll. The size of the unit was independent of sun- and shade-adaptation in U. lactuca, but did increase in shade-adapted P. umbilicalis.
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Literature Cited
Bjorkman, O.: Comparative studies of photosynthesis in higher plants. In: Photophysiology, Vol. VIII. pp 1–63. Ed. by A. C. Giese. New York: Academic Press 1973
Blinks, L. R.: Accessory pigments and photosynthesis. Photophysiology, Vol. 1. pp 199–221. Ed. by A. C. Giese. New York: Academic Press 1964
Brown, J. S.: Separation of photosynthetic systems I and II. In: Photophysiology, Vol. VIII. pp 97–112. Ed. by A. C. Giese. New York: Academic Press 1973
Diner, B. and D. Mauzerall: The turnover times of photosynthesis and redox properties of the pool of electron carriers between the photosystems. Biochim. biophys. Acta 305, 353–363 (1973)
Emerson, R. and W. Arnold: A separation of the reactions in photosynthesis by means of intermittent light. J. gen. physiol. 15, 391–420 (1932)
Govindjee: Bioenergetics of photosynthesis. 698 pp. New York: Academic Press 1975
Halldal, P.: The photosynthetic apparatus of microalgae and its adaptation to environmental factors: Chapter 2. In: Photobiology of microorganisms, pp 17–55. Ed. by P. Halldal. New York: Wiley Interscience 1970
Joliot, P. and B. Kok: Oxygen evolution in photosynthesis. In: Bioenergetics of photosynthesis, pp 387–412. Ed. by Govindjee. New York: Academic Press 1975
Ley, A. C. and W. L. Butler: Energy transfer from photosystem II to photosystem I in Porphyridium cruentum. Biochim. biophys. Acta 462, 290–294 (1977)
Mackinney, G.: Absorption of light by chlorophyll solutions. J. biol. Chem. 140, 315–322 (1941)
Ramus, J., S. I. Beale and D. Mauzerall: Correlation of changes in pigment content with photosynthetic capacity of seaweeds as a function of water depth. Mar. Biol. 37, 231–238 (1976a)
Ramus, J., S. I. Beale, D. Mauzerall and K. L. Howard: Changes in photosynthetic pigment concentration in seaweeds as a function of water depth. Mar. Biol. 37, 223–229 (1976b)
Vater, J., G. Renger, H. H. Stiehl and H. T. Witt: Intermediates and kinetics in the water splitting part of photosynthesis. In: Proceedings of the International Congress on Photosynthesis Research, Vol. II, pp 1006–1008. Ed. by H. Metzner. Tübingen: Helmut Metzner 1969
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Communicated by I. Morris, West Boothbay Harbor
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Mishkind, M., Mauzerall, D. Kinetic evidence for common photosynthetic step in diverse seaweeds. Mar. Biol. 56, 261–265 (1980). https://doi.org/10.1007/BF00386863
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DOI: https://doi.org/10.1007/BF00386863