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Split Green Fluorescent Protein System to Visualize Effectors Delivered from Bacteria During Infection
Published on: May 24, 2018
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Split Green Fluorescent Protein System to Visualize Effectors Delivered from Bacteria During Infection
Hye-Young Lee1, So Eui Lee1, Jongchan Woo2
1Department of Plant Science, Plant Genomics and Breeding Institute, College of Agriculture and Life Science, Seoul National University.
Journal of Visualized Experiments : Jove
|June 12, 2018
Summary
Researchers developed a new method using split superfolder green fluorescent protein (sfGFP) to track bacterial effector proteins within plant cells. This technique overcomes previous limitations, enabling visualization of pathogen-host interactions and understanding plant disease mechanisms.
Area of Science:
- Plant Pathology
- Microbiology
- Molecular Biology
Background:
- Bacteria cause plant diseases by secreting effector proteins into host cells.
- Type III secretion system (T3SS) delivers bacterial effectors to the host cytosol.
- Understanding effector localization is crucial for pathogenicity studies, but visualizing T3SS-delivered effectors is challenging.
Purpose of the Study:
- To develop a novel method for visualizing the subcellular localization of bacterial effector proteins delivered by the T3SS.
- To overcome the incompatibility issues between T3SS and traditional fluorescent protein tagging.
Main Methods:
- Utilized an optimized split superfolder green fluorescent protein system (sfGFPOPT).
- Engineered an sfGFP11-tagged effector protein secreted via T3SS.
- Co-expressed sfGFP11-tagged effector with organelle-targeted sfGFP1-10OPT in host plants.
Main Results:
- Successfully visualized the reconstituted sfGFP fluorescence signal of the effector protein at specific organelle locations.
- Demonstrated the method's efficacy in Arabidopsis and Nicotiana benthamiana plants.
- Enabled dynamic tracking of effector protein localization after T3SS-mediated delivery.
Conclusions:
- The sfGFPOPT system provides a powerful tool for studying bacterial effector dynamics and host-pathogen interactions.
- This method enhances our understanding of how bacterial effectors manipulate host cells to cause disease.
- Facilitates research into plant immunity and the development of novel disease control strategies.
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