Persistence of cell division synchrony in Spirogyra insignis (Gamophyceae): membrane proteoglycans transmitting synchronizing information throughout generations.
Spirogyra insignis shows a long-term persistence of cell division synchrony in the absence of the synchronizing Zeitgeber, so that at least six generations are involved in the process. This tentatively suggests that a mechanism of transmission throughout generations of synchronizing information could maintain this synchrony. Apparently, a vital part of the molecular basis of this mechanism is a membrane proteoglycan complex. This complex could obtain temporal information from a synchronizing Zeitgeber and be transmitted to the progeny by distribution of plasma membrane between daughter cells.
Costas
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Genética, Producción Animal, Facultad de Veterinaria, Universidad Complutense de Madrid, Spain.
Lopez Rodas
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D002455:Cell Division; D002462:Cell Membrane / Q000378:metabolism; D000460:Chlorophyta / Q000166:cytology* / Q000378:metabolism; D003624:Darkness; D037102:Lectins; D008027:Light; D010507:Periodicity; D011509:Proteoglycans / Q000378:metabolism*; D014357:Trypsin
D037102:Lectins; D011509:Proteoglycans; D014357:Trypsin