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Diel Phasing Of The Cell-cycle In The Florida Red Tide Dinoflagellate, Gymnodinium Breve by Frances M. Van Dolah; Tod A. Leighfield is a Earth and Planetary Sciences article available to read on EtoBox.

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The diel cycle is a key regulator of the cell‐cycle in many dinoflagellates, but the mechanisms by which the diel cycle entrains the cell‐cycle remain poorly understood. In this study, we describe diel phasing of the cell‐cycle in the Florida red tide dinoflagellate __Gymnodinium breve__ Davis, determine the diel cue which serves to entrain the cell‐cycle, and provide evidence for the presence of cyclin‐dependent kinase (CDK), a cell‐cycle regulator which may be responsive to this cue. Four laboratory isolates from the West Coast of Florida were compared. When grown on a 16:8 h LD cycle, all isolates displayed phased cell division, with the S‐phase beginning 6–8 h into the light phase, and mitosis following 12–14 h later, as determined by flow cytometry. A naturally occurring bloom of __G. breve,__ studied over one diel cycle, displayed diel cell‐cycle phasing similar to that in the laboratory cultures, with the S‐phase beginning during daylight and the peak of mitosis occurring approximately 4 h after sunset. In the laboratory cultures, the dark/light “dawn” transition was found to provide the diel cue which serves to entrain the __G. breve__ cell‐cycle, whereas the light/ dark “d

Who reads Diel Phasing Of The Cell-cycle In The Florida Red Tide Dinoflagellate, Gymnodinium Breve?

Author

Frances M. Van Dolah; Tod A. Leighfield

Publisher

John Wiley and Sons; Wiley (Blackwell Publishing); Blackwell Publishing Inc.; Wiley (ISSN 0022-3646)

Published

1999

Language

EN

Field

Earth and Planetary Sciences (Physical Sciences)