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Related Concept Videos

Role of Microtubules in Cell Wall Deposition01:02

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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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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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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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The organs in a multicellular organism’s body are made up of tissues formed by cells. To work together cohesively, cells must communicate. One way that cells communicate is through direct contact with other cells. The points of contact that connect adjacent cells are called intercellular junctions.
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Structural Characterization of Mannan Cell Wall Polysaccharides in Plants Using PACE
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Xylan-directed cell wall assembly in grasses.

Lanjun Zhang1, Yihua Zhou1,2, Baocai Zhang1,2

  • 1State Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China.

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Xylan, a key grass cell wall component, is crucial for biomass structure and utilization. Recent advances reveal novel xylan nanostructures and offer potential for crop improvement in energy and feed applications.

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Area of Science:

  • Plant Biology
  • Biochemistry
  • Biotechnology

Background:

  • Xylan is the most abundant hemicellulosic polysaccharide in grass cell walls.
  • It is pivotal for cell wall structure, cellular functions, and biomass recalcitrance.
  • Understanding xylan biosynthesis and cell wall organization has improved with advanced techniques.

Purpose of the Study:

  • To summarize recent achievements in xylan biosynthesis, modification, modeling, and compartmentalization in grasses.
  • To provide an overview of xylan's role in cell wall assembly.
  • To discuss tailoring xylan for elite energy and feed crop breeding.

Main Methods:

  • Review of recent scientific literature and advancements.
  • Application of state-of-the-art techniques in cell wall research.
  • Analysis of novel xylan-based nanostructures in xylem vessels.

Main Results:

  • Novel xylan-based nanostructures identified in xylem vessels.
  • Substantial improvements in understanding xylan biosynthesis and cell wall organization.
  • Identification of xylan's role in regulating biomass recalcitrance.

Conclusions:

  • Xylan is central to grass cell wall architecture and biomass properties.
  • Tailoring xylan offers potential for developing improved energy and feed crops.
  • Continued research into xylan nanostructures will advance cell wall biology and crop design.