Circadian rhythms of flashing and glow were recorded simultaneously in Gonyaulax polyedra by determining maximum and minimum light emission at each measured interval of 28 sec. In constant light, the two rhythms in some cases showed different period lengths (τ), the glow rhythm being up to 1 hr shorter than the flashing rhythm. Lower temperatures shortened the τ of the glow rhythm more than that of the flashing rhythm. The amplitude of the flashing rhythm decreased when the temperature was increased from 15°C to 25°C, whereas that of the glow rhythm was increased. These results may indicate that the two rhythms are controlled by two separate oscillators.
Dunlap, J.C., and J.W. Hastings (1981) The biological clock in Gonyaulax controls luciferase activity by regulating turnover. J. Biol. Chem.25: 10509-10518.
2.
Fritz, L., D. Morse, and J.W. Hastings (1990) The circadian bioluminescence rhythm of Gonyaulax is related to daily variations in the number of light-emitting organelles . J. Cell Sci.95321-328
3.
Gooch, V.D. (1985) Effects of light and temperature steps on circadian rhythms of Neurospora and Gonyaulax. In Temporal Order, L. Rensing and N. I. Jaeger , eds., pp. 232-237, Spnnger-Verlag, Berlin.
4.
Guillard, R.R.L. , and J.H. Ryther (1962) Studies on marine planktonic diatoms: I. Cyclotella nana Husted and Detonula confervacea Cleve. Can. J. Microbiol.8: 229-239
5.
Hastings, J.W., and B.M. Sweeney (1957) On the mechanism of temperature independence in a biological clock Proc Nat Acad. Sci USA43: 804-811.
6.
Hastings, J.W. , and B.M.Sweeney (1958) A persistent diumal rhythm of luminescence in Gonyaulax polyedra. Biol Bull.115440-458
7.
Hobohm, U., G. Cornelius, W. Taylor, and L. Rensing (1984) Is the circadian clock of Gonyaulax held stationary after a strong pulse of anisomycin? Comp. Biochem. Physiol . 79A. 371-378.
8.
Homma, K., and J.W. Hastings (1988) Cell cycle synchronization of Gonyaulax polyedra by filtration Quantized generation times. J. Biol. Rhythms3. 49-58.
9.
Knoetzel, J., and L. Rensing (1990) Characterisation of the photosynthetic apparatus from the marine dinoflagellate Gonyaulax polyedra. II. Circadian rhythmicity of photosynthesis and the supramolecular organisation of pigment-protein complexes . J. Plant Physiol.136: 280-288.
10.
Krasnow, R., J.C. Dunlap, W. Taylor, J.W. Hastings, W. Vetterling, and V.D. Gooch (1980) Circadian spontaneous bioluminescent glow and flashing of Gonyaulax polyedra. J. Comp. Physiol. 138. 19-26.
11.
Mcmurry, L., and J.W. Hastings (1972) No desynchronization among four different circadian rhythms in the unicellular algae, Gonyaulax polyedra. Science175: 1137-1139.
12.
Morse, D.S., P.M. Milos, E. Roux, and J.W. Hastings (1989) Circadian regulation of the synthesis of substrate binding protein in the Gonyaulax bioluminescent system involves translational control Proc. Natl. Acad Sci USA86: 172-176.
13.
Morse, D.S., L. Fritz, and J.W. Hastings (1990) What is the clock? Translational regulation of circadian bioluminescence. TIBS15: 262-265.
14.
Njus, D., L. Mcmurry, and J.W. Hastings (1977) Conditionality of circadian rhythmicity: Synergistic action of light and temperature. J Comp. Physiol.117: 335-344.
15.
Roenneberg, T., G.N. Colfax, and J.W. Hastings (1989) A circadian rhythm of population behavior in Gonyaulax polyedra. J. Biol. Rhythms4: 201-216.
16.
Scholubbers, H.G., W. Taylor, and L. Rensing (1984) Are membrane propeties essential for the circadian rhythm of Gonyaulax? Am. J. Physiol.247: R250-256.
17.
Schroder-Lorenz, A., and L. Rensing (1986) Circadian clock mechanism and synthesis rates of individual protein species in Gonyaulax polyedra. Comp Biochem. Physiol.85B: 315-323
18.
Sweeney, B.M. (1987) Bioluminescence and circadian rhythms. In The Biology of Dinoflagellates, F. J. R. Taylor, ed., pp. 269-281, Blackwell Scientific, Oxford.
19.
Sweeney, B.M., and J.W. Hastings (1958) Rhythmic cell division in populations of Gonyaulax polyedra. J. Protozool.5: 217-224.
20.
Taylor, W., R. Krasnow, J.C. Dunlap, H. Broda, and J.W. Hastings (1982a) Critical pulses of amsomycm drive the circadian oscillator in Gonyaulax towards its singularity. J. Comp. Physiol.148: 11-25.
21.
Taylor, W., S. Wilson, R. Presswood, and J.W. Hastings (1982b) Circadian rhythm data collection using the Apple II microcomputer. J. Interdiscipl. Cycle Res.13: 71-79.
22.
Vicker, M.G., J. Becker, G. Gebauer, W. Schill, and L. Rensing (1988) Circadian rhythms of cell cycle processes in the marine dinoflagellate Gonyaulax polyedra. Chronobiol. Int.5: 5-17.
