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Related Concept Videos

Contact-dependent Signaling01:19

Contact-dependent Signaling

Contact-dependent signaling, as the name suggests, requires that communicating cells be in direct contact with each other. This is achieved either through receptor-ligand interactions or by specialized cytoplasmic channels that allow the flow of small molecules between cells. In animal cells, channels called gap junctions facilitate contact-dependent signaling in certain tissues, whereas, plasmodesmata perform a similar function in plants.
Gap Junctions
In animal cells, gap junctions are formed...
Plasmodesmata02:32

Plasmodesmata

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.Intercellular junctions are a feature of fungal, plant, and animal cells alike. However, different types of junctions are found in different kinds of cells. Intercellular junctions found in animal...
Short-distance Transport of Resources02:12

Short-distance Transport of Resources

Short-distance transport refers to transport that occurs over a distance of just 2-3 cells, crossing the plasma membrane in the process. Small uncharged molecules, such as oxygen, carbon dioxide, and water, can diffuse across the plasma membrane on their own. In contrast, ions and larger molecules require the assistance of transport proteins due to their charge or size. Transport across membranes also occurs within individual cells, playing a variety of essential roles for the plant as a whole.
The Apoplast and Symplast01:46

The Apoplast and Symplast

Plant growth depends on its ability to take up water and dissolved minerals from the soil. The root system of every plant is equipped with the necessary tissues to facilitate the entry of water and solutes. The plant tissues involved in the transport of water and minerals have two major compartments - the apoplast and the symplast. The apoplast includes everything outside the plasma membrane of living cells and consists of cell walls, extracellular spaces, xylem, phloem, and tracheids. The...
Protein Transport to the Inner Chloroplast Membrane01:18

Protein Transport to the Inner Chloroplast Membrane

Proteins targeted to the inner chloroplast membrane, or plastid proteins, are transported by two general pathways: the stop-transfer and the re-insertion or post-import pathways. Most plastid proteins carry N-terminal transit sequences and internal import sequences targeting it to the specific chloroplast subcompartment. Proteins targeted by the stop-transfer pathway have internal hydrophobic sequences that inhibit their translocation into the stroma. As a result, these precursors are arrested...
Plasmodesmata01:20

Plasmodesmata

In a multicellular organism, cells must communicate to work together in a coordinated manner. One way that cells communicate is through direct contact with other cells. The points of contact that connect adjacent cells are called intercellular junctions.
Intercellular junctions are a feature of fungal, plant, and animal cells. However, different types of junctions are found in different kinds of cells. Intercellular junctions found in animal cells include tight junctions, gap junctions, and...

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A Cell-to-cell Macromolecular Transport Assay in Planta Utilizing Biolistic Bombardment
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Published on: August 28, 2010

Intercellular protein trafficking through plasmodesmata

B Ding1

  • 1Department of Botany, Oklahoma State University, Stillwater 74078, USA. bxding@osuunx.ucc.okstate.edu

Plant Molecular Biology
|September 17, 1998
PubMed
Summary
This summary is machine-generated.

Plant cells communicate via plasmodesmata, enabling intercellular protein trafficking. This process is crucial for regulating plant development, function, and defense responses.

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Area of Science:

  • Plant Biology
  • Molecular Biology
  • Cell Biology

Background:

  • Cell specialization drives plant development, requiring intercellular communication.
  • Plasmodesmata form cytoplasmic channels for direct cell-to-cell transport.
  • Intercellular transport of macromolecules like proteins is increasingly recognized.

Purpose of the Study:

  • To review recent advances in intercellular protein trafficking in plants.
  • To discuss the potential mechanisms facilitating protein movement between plant cells.
  • To highlight the significance of this process in plant development and defense.

Main Methods:

  • Literature review of current research on plasmodesmata and protein trafficking.
  • Analysis of studies on macromolecule transport through plasmodesmata.
  • Synthesis of findings on the roles of intercellular protein trafficking.

Main Results:

  • Plasmodesmata facilitate the movement of various proteins, including transcription factors and defense proteins.
  • Intercellular protein trafficking influences diverse physiological processes and plant-pathogen interactions.
  • Specific mechanisms for protein targeting and translocation through plasmodesmata are being uncovered.

Conclusions:

  • Intercellular protein trafficking is a vital mechanism for coordinating plant development and function.
  • Understanding these pathways is key to manipulating plant traits and improving disease resistance.
  • Further research into the molecular mechanisms of protein trafficking is warranted.