| The biochemical control of the cell cycle by growth regulators in higher plants |
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| 作者姓名： | TANGWei LatoyaHarris RonaldJ.Newton |
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| 作者单位： | DepartmentofBiology,HowellScienceComplex,EastCarolinaUniversity,Greenville,NC27858-4353,USA |
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| 摘 要： | The cell cycle is an important research field in cell biology and it is genetically and developmentally regulated in animals and plants. The aim of this study was to review knowledge about the biochemical regulation of the cell cycle by plant growth regulators through molecular checkpoints that regulate the transition from G0-G1-S-phase and G2-M in higher plants.Recent research has shown that zeatin treatment led to the up-regulation of CycD3 in Arabidopsis. Benzyladenine treatment can also shorten the duration of S-phase through recruitment of latent origins of DNA replication. Kinetin is involved in the phosphoregulation of the G2-M checkpoint; the major cyclin-dependent kinase (Cdk) at this checkpoint has recently shown to be dephosphorylated as a result of cytokinin treatment, an effect that can also be mimicked by the fission yeast Cdc25 phosphatase. Gibberellic acid (GA) treatment induces internode elongation in deepwater rice, this response is mediated by a GA-induced up-regulation of a cyclin-Cdk at the G2-M checkpoint. Recent evidence has also linked abscisic acid to a cyclin-dependent kinase inhibitor. A new D-type cyclin, recently discovered in Arabidopsis may have a key role in this process. A brief review on plant growth regulator-cell cycle interfacing during development and a cytokinin-induced continuum of cell cycle activation through the up-regulation of a plant D-type cyclin at the G1 checkpoint and the phosphoregulation of the Cdk at the G2/M checkpoint had been concluded. This review could be valuable to research on cell and developmental biology in plants.
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| 关 键 词： | 生物化学调控 细胞周期 高等植物 发育 细胞生物学 |
The biochemical control of the cell cycle by growth regulators in higher plants |
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| TANGWei LatoyaHarris RonaldJ.Newton.The biochemical control of the cell cycle by growth regulators in higher plants[J].Journal of Forestry Research,2004,15(3):227-232. |
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| Authors: | Wei Tang Latoya Harris Ronald J Newton |
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| Institution: | (1) Department of Biology, Howell Science Complex, East Carolina University, 27858-4353 Greenville, NC, USA |
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| Abstract: | The cell cycle is an important research field in cell biology and it is genetically and developmentally regulated in animals
and plants. The aim of this study was to review knowledge about the biochemical regulation of the cell cycle by plant growth
regulators through molecular checkpoints that regulate the transition from GO-G1-S-phase and G2-M in higher plants. Recent
research has shown that zeatin treatment led to the up-regulation of CycD3 inArabidopsis. Benzyladenine treatment can also shorten the duration of S-phase through recruitment of latent origins of DNA replication.
Kinetin is involved in the phosphoregulation of the G2-M checkpoint; the major cyclin-dependent kinase (Cdk) at this checkpoint
has recently shown to be dephosphorylated as a result of cytokinin treatment, an effect that can also be mimicked by the fission
yeast Cdc25 phosphatase. Gibberellic acid (GA) treatment induces internode elongation in deepwater rice, this response is
mediated by a GA-induced up-regulation of a cyclin-Cdk at the G2-M checkpoint. Recent evidence has also linked abscisic acid
to a cyclin-dependent kinase inhibitor. A new D-type cyclin, recently discovered inArabidopsis may have a key role in this process. A brief review on plant growth regulator-cell cycle interfacing during development and
a cytokinin-induced continuum of cell cycle activation through the up-regulation of a plant D-type cyclin at the G1 checkpoint
and the phosphoregulation of the Cdk at the G2/M checkpoint had been concluded. This review could be valuable to research
on cell and developmental biology in plants.
Biography: TANG Wei (1964-) male, Ph. Doctor, V. Assistant Professor, Department of Biology, Howell Science Complex. East Carolina
University, Greenville, NC 27858-4353, USA.
Responsible editor: Chai Ruihai |
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| Keywords: | cell cycle checkpoints development plant growth regulators |
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