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Related Concept Videos

Plant Cell Wall02:43

Plant Cell Wall

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.Collenchyma and sclerenchyma cells, on the other hand, mainly occur in the outer layers of a plant's stems and leaves. These cells provide the plant with strength and support by either partially thickening their primary cell wall (i.e., collenchyma), or depositing a...
Phloem and Sugar Transport02:02

Phloem and Sugar Transport

Like many living organisms, plants have tissues that specialize in specific plant functions. For example, shoots are well adapted to rapid growth, while roots are structured to acquire resources efficiently. However, sugar production is primarily restricted to the photosynthetic cells that reside in the leaves of angiosperm plants. Sugar and other resources are transported from photosynthetic tissues to other specialized tissues by a process called translocation.
Plant Cell Wall01:07

Plant Cell Wall

Plant cells have a cell wall, a rigid outer covering that protects the cell and provides shape and support. During cell division, a mixture of enzymes, proteins, and glucose molecules is transported via vesicles to the center of the cell. These vesicles continuously fuse and build a cell plate between the dividing cells. As the cell plate matures, new polysaccharides are added to it to form the cell walls of the daughter cells. The predominant polysaccharide in the cell wall is cellulose, made...
Cellulose and Pectic Polysaccharides01:15

Cellulose and Pectic Polysaccharides

Every plant cell has a cell wall that protects the cell, provides structural support, and gives the cell shape. Cellulose, the main structural component of the plant cell wall, makes up over 30% of plant matter. It is the most abundant organic compound on earth.  Cellulose is an unbranched polysaccharide composed of linear chains of glucose molecules linked by β (1→4) glycosidic bonds.
As a cell matures, its cell wall specializes according to its type. For example, the parenchyma cells of...
Role of Microtubules in Cell Wall Deposition01:02

Role of Microtubules in Cell Wall Deposition

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 disassembly and...
Cell Adhesion in Plants01:14

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Glycan Profiling of Plant Cell Wall Polymers using Microarrays
12:30

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Published on: December 17, 2012

Tissue-specific developmental changes in cell-wall ferulate and dehydrodiferulates in sugar beet.

G Wende1, K W Waldron, A C Smith

  • 1Plant Molecular Science Group, Institute of Biomedical and Life Science, Glasgow University, UK.

Phytochemistry
|November 7, 2000
PubMed
Summary
This summary is machine-generated.

Sugar beet cell walls show varied ferulate and dehydrodiferulate ester patterns across tissues, with higher dimer content in absorptive roots. Biosynthetic pathways and phenolic metabolism are complex and tissue-specific.

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Area of Science:

  • Biochemistry
  • Plant Science
  • Agricultural Science

Background:

  • Ferulate and dehydrodiferulate esters are phenolic compounds found in plant cell walls.
  • These compounds play roles in cell wall structure and defense mechanisms.
  • Understanding their distribution and metabolism is crucial for plant biology and agriculture.

Purpose of the Study:

  • To analyze the distribution and types of ferulate and dehydrodiferulate ester dimers in different sugar beet tissues.
  • To investigate the biosynthetic pathways and metabolism of these phenolic compounds in sugar beet.
  • To explore tissue-specific variations in phenolic ester composition and formation.

Main Methods:

  • Sugar beet (Beta vulgaris L.) seedlings were cultivated for 8-14 weeks.
  • Plant tissues (leaf, petiole, storage root, absorptive root) were separated.
  • Cell-wall ferulate and dehydrodiferulate esters were quantified using High-Performance Liquid Chromatography (HPLC).
  • [14C]-cinnamate was applied to leaves to trace metabolic pathways.

Main Results:

  • Ferulate dimer linkages varied by tissue: 8-8 in leaves, and 8-O-4/8-5 in other tissues.
  • Absorptive roots exhibited significantly higher total dimer content and percentage of dimerisation.
  • Radioactive labeling revealed a higher proportion of 8-5 linkages in [14C]-dimers within root cell walls, especially at later time points.

Conclusions:

  • Tissue-specific variations in ferulate and dehydrodiferulate ester content suggest distinct biosynthetic processes in sugar beet.
  • The metabolism of cell-wall phenolics, particularly dimer formation, is complex and exhibits tissue-specific characteristics.
  • Further research is needed to fully elucidate the intricate metabolic pathways of phenolic compounds in plants.