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Multiconjugant Complexes of Euplotes Crassus: an Instance of Coordination of Nuclear Events * , †
Author(s) -
LUPORINI PIERANGELO,
GIACHETTI CINZIA
Publication year - 1980
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.1550-7408.1980.tb04238.x
Subject(s) - asynchrony (computer programming) , ciliate , mixing (physics) , pronucleus , physics , biology , cell nucleus , microbiology and biotechnology , zygote , genetics , nucleus , embryo , computer science , embryogenesis , quantum mechanics , computer network , asynchronous communication
SYNOPSIS In the ciliate Euplotes crussus, doublet cells of 3 complementary mating types were mixed and multiconjugant complexes obtained. The cells were not uniform in the G, stage at the time of mixing. Despite asynchrony, the nuclear events of conjugation started and progressed coordinately in all the members of each complex, leading to a synchronous exchange of pronuclei. An adjustment of the cellular timing takes place before the nuclei of multiconjugants begin dividing. This adjustment probably occurs through specific ciliary contact during preconjugant interaction.