An improved method for the cell cycle synchronization of Vicia faba root meristem cells

• Autorzy: Polit J.T.
• Języki publikacji: EN

Abstrakty

EN

Plant root meristem cells divide asynchronously which makes biochemical analysis of cell cycle regulation particularly difficult. In the present article a high level of cell cycle synchronization in Vicia faba root meristems was obtained by using a rich medium (HNS), special culture conditions and a double-block method with replication inhibitor—hydroxyurea (HU). Two HU concentrations were tested and different periods of the first and the second synchronization, and of cycle recommencement between the first and the second blockage. The level of synchronization was estimated on the basis of 3-thymidine labeling indices, mitotic, and phase indices and indices determining the percentage of G1 and G2 cells, which were identified by cytophotometric measurements of DNA content in individual nuclei. The highest level of cell cycle synchronization was obtained after double treatment of meristems with 1.25 mM HU (18 and 12 h) separated by 6-h incubation in HNS without HU. During the second postincubation in HNS in subsequent hours: 4, 7, 10, 11, over 90% of cells in the S phase, nearly 70% in G2 phase, 86% in mitosis, and nearly 70% in G1 phase were received, respectively. The use of 2.5 mM HU in a similar experimental procedure caused disturbed divisions.

• Wydawca: -
• Czasopismo: Acta Physiologiae Plantarum
• Rocznik: 2008
• Tom: 30
• Numer: 3
• Opis fizyczny: p.315-324,fig.,ref.

Twórcy

autor

Polit J.T.

• Department of Cytophysiology, University of Lodz, Pilarskiego 14, 90-231 Lodz, Poland

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