Effect of kinetin on the course of cell cycle in successive developmental stages of the antheridial filaments of Chara vulgaris L

Effects of kinetin on the course of cell cycle in successive developmental stages of the antheridial filaments of Chara vulgaris L. were investigated. A shortening of the duration of cell cycles has been observed, particularly in initial. and final developmental stages. S phase. shortened in all sta...

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Bibliographic Details
Published in:Acta Societatis Botanicorum Poloniae 1982-01, Vol.51 (1), p.21-37
Main Author: Godlewski, M
Format: Article
Language:English
Subjects:
Adenine
Algae
Cell cycle
Chara vulgaris
Cytokinins
Cytoplasm
Developmental stages
Filaments
G2 phase
Incorporation
Kinetin
Mitosis
Nuclei
Phenylalanine
Plant growth
S phase
Thymidine
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Summary:Effects of kinetin on the course of cell cycle in successive developmental stages of the antheridial filaments of Chara vulgaris L. were investigated. A shortening of the duration of cell cycles has been observed, particularly in initial. and final developmental stages. S phase. shortened in all stages whereas G2 phase+mitosis shortened in early but become longer in late developmental stages of filaments. Incorporation of 14C-adenine into cell nuclei increased after kinetin treatment in 4- and 8-celled filaments whereas that of 3H-phenylalanine increased in 8- and particularly 16-celled ones. This plant growth regulator stimulated also the 3H-thymidine incorporation into cells in studied developmental stages of filaments. The stimulation of radioactive phenylalanine incorporation into nucleus and cytoplasm was stronger in late G2 phase. A participation of cytokinins in the control of cell cycle in relation to process of differentiation of antheridial cells is discussed. A possibility of changes in the cytokinin content in antheridia and antheridial filament cells during their; development has been postulated.
ISSN:0001-6977
2083-9480
DOI:10.5586/asbp.1982.003