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Effects of Abiotic Stresses on Cell Cycle Progression in Tobacco BY-2 Cells  

Jang, Su Jin (Department of Biology, Sunchon National University)
Shin, Sung Hae (Department of Biology, Sunchon National University)
Yee, Sung Tae (Department of Biology, Sunchon National University)
Hwang, Baek (Department of Biology, Chonnam National University)
Im, Kyung Hoan (Department of Biology, University of Incheon)
Park, Ky Young (Department of Biology, Sunchon National University)
Publication Information
Molecules and Cells / v.20, no.1, 2005 , pp. 136-141 More about this Journal
Abstract
Mild stresses such as high temperature ($30^{\circ}C$) or a low $H_2O_2$ concentration induced transient cell cycle arrest at G1/S or G2/M depending on the cell cycle stage at which the stress was applied. When stresses were introduced during G0 or G1, the G1/S checkpoint was mainly used; when stresses were introduced after S phase, G2/M was the primary checkpoint. The slowing of cell cycle progression was associated with transient delays in expression of A-, B-, and D-type cyclins. The delay in expression of NtcycA13, one of the A-type cyclins, was most pronounced. The levels of expression of Ntcyc29 (a cyclin B gene) and of CycD3-1 differed most depending on the applied stress, suggesting that different cellular adjustments to mild heat and a low concentration of $H_2O_2$ are reflected in the expression of these two cyclins.
Keywords
Cell Cycle; Cyclins; Heat Stress; Hydrogen Peroxide; Tobacco BY-2 Cells;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
Times Cited By Web Of Science : 6  (Related Records In Web of Science)
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