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Quantifying Plasmodesmatal Transport with an Improved GFP Movement Assay.
Wilson Horner1,2,3, Jacob O Brunkard4,5,6
1Laboratory of Genetics, University of Wisconsin-Madison, Madison, WI, USA.
Methods in Molecular Biology (Clifton, N.J.)
|March 29, 2022
Summary
Researchers developed a new method to measure plasmodesmata (PD) transport in plant leaves. This technique uses fluorescent proteins to track movement between cells, aiding plant biology research.
Area of Science:
- Plant biology
- Cell biology
- Molecular biology
Background:
- Plasmodesmata (PD) are crucial intercellular channels facilitating molecular transport between plant cells.
- Regulation of PD transport is vital for plant development, metabolism, and stress responses, attracting significant research interest.
Purpose of the Study:
- To present a reproducible and straightforward method for quantifying changes in PD transport rates in plant leaves.
- To provide a versatile assay adaptable for various experimental conditions and treatments.
Main Methods:
- Agrobacterium-mediated transformation of individual plant cells to express fluorescent proteins (e.g., GFP).
- Monitoring the movement and spread of fluorescent proteins from transformed cells through PD using confocal fluorescence microscopy.
- Quantifying the extent of GFP movement 48–72 hours post-transformation.
Main Results:
- The developed method allows for reproducible quantification of PD transport rates in leaves.
- The assay is versatile and can be integrated with techniques like gene overexpression, gene silencing, and various treatments.
Conclusions:
- This improved method offers a valuable tool for plant biologists to study PD transport dynamics.
- The assay is expected to facilitate research across diverse fields of plant science by enabling precise measurement of intercellular transport.
