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Related Concept Videos

Transport Across the Golgi01:26

Transport Across the Golgi

While it is unclear how molecules move between adjacent Golgi cisternae, it is apparent that the molecules move from cis- cisterna, the entry face, to the trans- cisterna, the exit face. Experiments initially suggested vesicles that bud from one cisterna and fuse with the next cisterna to transport proteins between the cisternae. This vesicular transport model describes the Golgi apparatus as a relatively static structure with a unique enzyme composition in each cisterna. Molecules are...
Golgi Apparatus01:49

Golgi Apparatus

As they leave the Endoplasmic Reticulum (ER), properly folded and assembled proteins are selectively packaged into vesicles. These vesicles are transported by microtubule-based motor proteins and fuse together to form vesicular tubular clusters, subsequently arriving at the Golgi apparatus, a eukaryotic endomembrane organelle that often has a distinctive ribbon-like appearance.The Golgi apparatus is a major sorting and dispatch station for the products of the ER. Newly arriving vesicles enter...
Golgi Apparatus01:09

Golgi Apparatus

Properly folded and assembled proteins are selectively packaged into vesicles that exit the ER. Motor proteins transport these vesicles to the Golgi apparatus for adding modifications that make these proteins functional at their destination.
The Golgi apparatus is a eukaryotic organelle that has a distinctive ribbon-like appearance. It is a primary sorting and dispatch station for cargo arriving from the ER. Newly arriving vesicles enter the cis face of the Golgi, closest to the ER, and are...
Golgi Apparatus01:09

Golgi Apparatus

Properly folded and assembled proteins are selectively packaged into vesicles that exit the ER. Motor proteins transport these vesicles to the Golgi apparatus for adding modifications that make these proteins functional at their destination.
The Golgi apparatus is a eukaryotic organelle that has a distinctive ribbon-like appearance. It is a primary sorting and dispatch station for cargo arriving from the ER. Newly arriving vesicles enter the cis face of the Golgi, closest to the ER, and are...
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.
Vesicular Tubular Clusters01:45

Vesicular Tubular Clusters

After budding out from the ER membrane, some COPII vesicles lose their coat and fuse with one another to form larger vesicles and interconnected tubules called vesicular tubular clusters or VTCs. These clusters constitute a compartment at the ER-Golgi interface known as ERGIC (Endoplasmic Reticulum Golgi Intermediate Compartment). The ERGIC is a mobile membrane-bound cargo transport system that sorts proteins secreted from ER and delivers them to the Golgi.
With the help of motor proteins such...

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Related Experiment Video

Updated: Jun 23, 2026

Quantitative Localization of a Golgi Protein by Imaging Its Center of Fluorescence Mass
13:08

Quantitative Localization of a Golgi Protein by Imaging Its Center of Fluorescence Mass

Published on: August 10, 2017

Post-Golgi traffic in plants.

Sandra Richter1, Ute Voss, Gerd Jürgens

  • 1ZMBP, Entwicklungsgenetik,Universität Tübingen, Auf der Morgenstelle 3, D-72076 Tübingen, Germany.

Traffic (Copenhagen, Denmark)
|May 7, 2009
PubMed
Summary
This summary is machine-generated.

Plant cells meticulously manage protein levels at their surface through intricate endomembrane system trafficking. This process, involving the trans-Golgi network and endosomes, is crucial for cell communication and adaptation.

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Last Updated: Jun 23, 2026

Quantitative Localization of a Golgi Protein by Imaging Its Center of Fluorescence Mass
13:08

Quantitative Localization of a Golgi Protein by Imaging Its Center of Fluorescence Mass

Published on: August 10, 2017

Image-Based Methods to Study Membrane Trafficking Events in Stomatal Lineage Cells
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Image-Based Methods to Study Membrane Trafficking Events in Stomatal Lineage Cells

Published on: May 12, 2023

Studying Protein Import into Chloroplasts Using Protoplasts
06:29

Studying Protein Import into Chloroplasts Using Protoplasts

Published on: December 10, 2018

Area of Science:

  • Plant cell biology
  • Molecular and Cellular Biology
  • Membrane trafficking

Background:

  • The post-Golgi endomembrane system regulates plasma-membrane protein abundance, impacting cell communication and environmental adaptation.
  • Key compartments include the trans-Golgi network (TGN) and endosomes, though plant endosomes are morphologically less defined.
  • Many plasma-membrane proteins constitutively cycle through endosomal compartments.

Purpose of the Study:

  • To elucidate the mechanisms and specific pathways of post-Golgi endomembrane traffic in plant cells.
  • To understand how plant trafficking machinery is modified compared to other eukaryotes.
  • To investigate the role of post-Golgi traffic in cellular polarization and adaptation.

Main Methods:

  • Comparative analysis of post-Golgi endomembrane system structures and functions in plants versus animals.
  • Identification and characterization of key trafficking pathways, including endocytosis, exocytosis, and protein sorting via the TGN and prevacuolar compartment (PVC).
  • Examination of protein machinery involved in plant-specific trafficking adaptations.

Main Results:

  • The trans-Golgi network (TGN) functions as an early endosome where secretory and endocytic pathways converge.
  • Endocytosed proteins are sorted to the vacuole via the multivesiculate prevacuolar compartment (PVC) for degradation or through recycling endosomes for reuse.
  • Plant post-Golgi traffic machinery shares similarities with other eukaryotes but exhibits specific modifications for plant cell biology, including polarized traffic in tip-growing cells.

Conclusions:

  • Plant post-Golgi endomembrane traffic is essential for regulating plasma-membrane protein homeostasis and cellular functions.
  • Specific adaptations in trafficking pathways support polarized growth and physiological performance in plant tissues.
  • Understanding these pathways provides insights into cell-environment interactions and developmental processes in plants.