1989
DOI: 10.1111/j.1365-2184.1989.tb00217.x
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The maintenance of colchicine‐arrested metaphases in plants requires protein synthesis

Abstract: With the aim of finding out factors involved in chromosomal condensation, the kinetics of both metaphase accumulation and the subsequent formation of restitution nuclei in the presence of 1 mM colchicine have been analysed in Allium cepa L. meristems. Restitution nuclei are formed by decondensation of the chromosomes from the c‐mitoses and the reformation of nuclear envelopes around them. The study has been carried out in control conditions as well as in conditions which either inhibit protein synthesis (1 μg/… Show more

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Cited by 2 publications
(2 citation statements)
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“…In plant cells, replication and postreplication checkpoints, such as those surveilling the completion of DNA replication and the postreplicative repair of DNA damage in G2 and prophase, are conserved (Del Campo et al 1997, Pelayo et al 2001. The existence of a spindle checkpoint that controls the metaphase-to-anaphase transition was made obvious by observations of colchicine-arrested cells which, after their delay at c-mitosis, reorganize their chromatin and re-form a nuclear envelope around the chromosomal complement (Sans et al 1989).…”
Section: Introductionmentioning
confidence: 97%
“…In plant cells, replication and postreplication checkpoints, such as those surveilling the completion of DNA replication and the postreplicative repair of DNA damage in G2 and prophase, are conserved (Del Campo et al 1997, Pelayo et al 2001. The existence of a spindle checkpoint that controls the metaphase-to-anaphase transition was made obvious by observations of colchicine-arrested cells which, after their delay at c-mitosis, reorganize their chromatin and re-form a nuclear envelope around the chromosomal complement (Sans et al 1989).…”
Section: Introductionmentioning
confidence: 97%
“…Bromosubstitution of portions of genome followed by anoxic UVA irradiation allowed to correlate discrete DNA sequences to G 2 [6,7] prophase [23], and metaphase [22] completion in Allium cepa L meristems. Analogous methods were used to detect replication times of specific .genes in mammalian cells [4,5,26].…”
Section: Introductionmentioning
confidence: 99%