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A Diurnal Settling Rhythm in Platymonas subcordiformis Hazen *
Author(s) -
GRANT W. STEWART,
VADAS ROBERT L.
Publication year - 1976
Publication title -
the journal of protozoology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.067
H-Index - 77
eISSN - 1550-7408
pISSN - 0022-3921
DOI - 10.1111/j.1550-7408.1976.tb03839.x
Subject(s) - cell division , settling , division (mathematics) , circadian rhythm , biology , cell , chemistry , environmental science , environmental engineering , biochemistry , mathematics , endocrinology , arithmetic
SYNOPSIS. In cultures of Platymonas subcordiformis Hazen, grown in appropriate light‐dark cycles, as many as 75% of the cells adhered to the surface of the glass culture vessel toward the end of the light period of each day. Cell division occurred primarily while the cells were attached. Subsequently, motile daughter cells were released into the growth medium by the rupture of the mother cell theca. The settling behavior appears to be an integral part of the life cycle being synchronized to the same extent as cell division.