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Related Concept Videos

The Cell Cycle Control System01:28

The Cell Cycle Control System

The cell cycle regulation directs how a cell proceeds from one phase to the next and begins mitosis. The cell cycle control system includes intracellular regulatory molecules and external triggers. They provide "stop" or "advance" signals and operate at specific cell cycle stages termed checkpoints to ensure that a particular process is completed before the cell advances to the next phase.
Cyclins and cyclin-dependent kinases (Cdks) are the primary cell cycle regulators and function at the cell...
The Cell Cycle Control System02:11

The Cell Cycle Control System

The cell cycle is an organized set of events that leads the cell to divide into two daughter cells, each containing chromosomes identical to the parent cell. It is the cell cycle that leads to the formation of an entire organism from a single-cell zygote. Besides, cell division also functions in the renewal or repair of tissues in adult multicellular eukaryotes. For example, in the bone marrow, the stem cells divide to form new blood cells. Although essential for several functions, cell...
The Cell Cycle Control System02:11

The Cell Cycle Control System

The cell cycle is an organized set of events that leads the cell to divide into two daughter cells, each containing chromosomes identical to the parent cell. It is the cell cycle that leads to the formation of an entire organism from a single-cell zygote. Besides, cell division also functions in the renewal or repair of tissues in adult multicellular eukaryotes. For example, in the bone marrow, the stem cells divide to form new blood cells. Although essential for several functions, cell...
Molecular Factors Affecting Cell Division01:27

Molecular Factors Affecting Cell Division

Several external and internal factors influence the initiation and inhibition of cell division. For instance, the death of nearby cells or the release of human growth hormone (hGH) promotes cell division. In contrast, lack of hGH or crowding of cells can inhibit cell division.
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Cells Coordinate Growth and Proliferation02:36

Cells Coordinate Growth and Proliferation

Cell size is a significant factor impacting cellular design, function, and fitness. There exists some internal coordination by which cells double their masses before division, thus, achieving homeostasis. Coordination between cell growth and proliferation depends on the checkpoints in between cell cycle phases. Loss of coordination or failure in the checkpoint mechanism can drive the cell to uncontrolled growth and loss of cellular function. Like dividing cells that coordinate cellular growth,...
Cells Coordinate Growth and Proliferation02:36

Cells Coordinate Growth and Proliferation

Cell size is a significant factor impacting cellular design, function, and fitness. There exists some internal coordination by which cells double their masses before division, thus, achieving homeostasis. Coordination between cell growth and proliferation depends on the checkpoints in between cell cycle phases. Loss of coordination or failure in the checkpoint mechanism can drive the cell to uncontrolled growth and loss of cellular function. Like dividing cells that coordinate cellular growth,...

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Kinematic Analysis of Cell Division and Expansion: Quantifying the Cellular Basis of Growth and Sampling Developmental Zones in Zea mays Leaves
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Cell cycle regulation in plant development.

Dirk Inzé1, Lieven De Veylder

  • 1Department of Plant Systems Biology, Flanders Interuniversity Institute for Biotechnology (VIB), Ghent University, Technologiepark 927, B-9052 Gent, Belgium. dirk.inze@psb.ugent.be

Annual Review of Genetics
|November 11, 2006
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Summary

Plant cell cycle regulation involves unique proteins like cyclins and cyclin-dependent kinase inhibitors, enabling developmental plasticity and endoreduplication for polyploidy. Understanding this integration with plant development is crucial.

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Kinematic Analysis of Cell Division and Expansion: Quantifying the Cellular Basis of Growth and Sampling Developmental Zones in Zea mays Leaves
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Area of Science:

  • Plant Biology
  • Molecular Biology
  • Developmental Biology

Background:

  • Cell cycle regulation is fundamental for plant growth and development.
  • Plants possess unique molecular mechanisms for cell cycle control, distinct from other eukaryotes.
  • Plant cells exhibit endoreduplication, leading to polyploidy, a process involving DNA replication without cell division.

Purpose of the Study:

  • To review the molecular mechanisms governing plant cell division.
  • To explore the process of endoreduplication in plants.
  • To discuss the integration of cell cycle regulation with plant development.

Main Methods:

  • Literature review of molecular mechanisms.
  • Analysis of regulatory proteins such as cyclins and CDK inhibitors.
  • Examination of DNA replication and polyploidy in plant cells.

Main Results:

  • Plants have evolved a diverse set of cell cycle regulators, including numerous cyclins and inhibitors of cyclin-dependent kinases.
  • Endoreduplication is a common process in plants, allowing for increased cell size and ploidy levels.
  • The precise integration of cell cycle control with plant development remains an area requiring further investigation.

Conclusions:

  • Plant cell cycle regulation is complex, featuring unique components that facilitate developmental flexibility.
  • Endoreduplication is a key strategy in plant development, contributing to tissue and organ formation.
  • Further research is needed to fully elucidate how cell cycle control is integrated with overall plant development.