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FINE STRUCTURE OF CELL DIVISION IN PYRAMIMONAS PARKEAE NORRIS AND PEARSON (CHLOROPHYTA, PRASINOPHYCEAE) 1
Author(s) -
Pearson Barbara R.,
Norris Richard E.
Publication year - 1975
Publication title -
journal of phycology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.85
H-Index - 127
eISSN - 1529-8817
pISSN - 0022-3646
DOI - 10.1111/j.1529-8817.1975.tb02757.x
Subject(s) - biology , cytokinesis , basal body , cell division , mitosis , chlorophyta , microbiology and biotechnology , golgi apparatus , division (mathematics) , organelle , nucleus , algae , chloroplast , botany , cell , flagellum , paleontology , genetics , arithmetic , mathematics , endoplasmic reticulum , bacteria , gene
SUMMARY Cell division in Pyramimonas parkeae is described and compared with some other green algae. The first indication of mitosis is division of the chloroplast, accompanied by growth of a prominent microbody, followed by replication of the 4 basal bodies. Also closely timed with this is the replication of the Golgi and other components of the basal body complex. Two basal body complexes separate, each taking a position at either pole of the nucleus which has migrated to a characteristic position just beneath the plasmalemma of a broadened and flattened flagellar pit. Cytokinesis is accomplished by the fusion of ducts and vesicles with the simultaneous release of scales to the newly formed exterior. Cells swim throughout division.