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Related Concept Videos

Plant Cell Wall02:43

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The plant cell wall gives plant cells shape, support, and protection. As a cell matures, its cell wall specializes according to the cell type. For example, the parenchyma cells of leaves possess only a thin, primary cell wall.
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Cell division is essential for organismal growth and development. In animal cells, the central spindle and its associated proteins form the midbody, a structure that has an essential role in cytokinesis. In plants, the central spindle, along with the microtubules, actin, and other cell components, matures into the phragmoplast, which is necessary for cytokinesis. Unlike the stationary midbody, the phragmoplast expands centrifugally, eventually leading to the formation of the new cell wall.
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Plants have rigid cell walls that are made up of cell wall polysaccharides that mediate cell-cell adhesion. The primary cell walls of plants consist of two independent and interacting polysaccharide networks: a pectin matrix that embeds the second network comprising cellulose and hemicelluloses.
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Microtubules are small hollow tubes in eukaryotic cells. The cell wall microtubules are polymerized dimers of two globular proteins, α-tubulin and β-tubulin, two globular proteins. With a diameter of about 25 nm, microtubules are the widest components of the cytoskeleton. They help the cell resist compression and provide a track along which vesicles move through the cell or pull replicated chromosomes to opposite ends of a dividing cell. Microtubules go through quick cycles of...
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Live Cell Imaging of Microtubule Cytoskeleton and Micromechanical Manipulation of the Arabidopsis Shoot Apical Meristem
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Cell wall remodeling during plant regeneration.

Guifang Zhang1,2, Ning Zhai3,4, Mulan Zhu3,5

  • 1State Key Laboratory of Efficient Production of Forest Resources, College of Biological Sciences and Technology, Beijing Forestry University, Beijing, 100083, China.

Journal of Integrative Plant Biology
|April 11, 2025
PubMed
Summary

Plant cell wall remodeling is crucial for regeneration, enabling tissue repair and new organ formation through gene expression and phytohormone signaling. This review explores its vital roles in plant development.

Keywords:
calluscell wall remodelingde novo organ regenerationplant regenerationsomatic embryogenesistissue repair

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Area of Science:

  • Plant Biology
  • Developmental Biology
  • Cell Biology

Background:

  • Plant regeneration involves altering cell development to repair damage or form new organs.
  • The plant cell wall provides structural support and influences cell fate during regeneration.
  • Cell wall remodeling, involving component degradation or addition, is increasingly recognized as vital for plant regeneration.

Purpose of the Study:

  • To review the impact of cell wall remodeling on diverse plant regenerative processes.
  • To offer new perspectives on the uncharacterized functions of the cell wall in plant regeneration.

Main Methods:

  • Literature review of recent evidence on cell wall remodeling in plant regeneration.
  • Analysis of molecular mechanisms involving transcription factors and phytohormones.

Main Results:

  • Wounding signals activate genes for cell wall loosening, essential for tissue repair.
  • Phytohormones regulate transcriptional networks for cell wall remodeling, promoting cell reprogramming and organogenesis.
  • Cell wall remodeling is integral to de novo organ regeneration and somatic embryogenesis.

Conclusions:

  • Cell wall remodeling plays a significant role in various plant regenerative processes.
  • Further research is needed to fully understand the uncharacterized roles of the cell wall in plant regeneration.