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Updated: Jun 26, 2026
12:02
Transient Gene Expression in Tobacco using Gibson Assembly and the Gene Gun
Published on: April 18, 2014
Functional characterization of a stilbene synthase gene using a transient expression system in planta
Jose Condori1, Giuliana Medrano, Ganapathy Sivakumar
1Arkansas Biosciences Institute, Arkansas State University, AR 72467, USA.
Plant Cell Reports
|January 1, 2009
Summary
A peanut resveratrol synthase (RS) gene was successfully expressed in tobacco leaves using a transient Agrobacterium system. This method rapidly confirmed the enzyme
Area of Science:
- Plant molecular biology
- Biochemistry
- Metabolic engineering
Background:
- Resveratrol synthase (RS) is crucial for stilbenoid biosynthesis.
- Functional analysis of plant genes often requires stable transgenic lines or complex in vitro systems.
- Transient expression offers a faster alternative for gene function studies.
Purpose of the Study:
- To investigate the expression and functionality of a peanut (Arachis hypogaea) resveratrol synthase (RS) gene.
- To validate a rapid Agrobacterium tumefaciens-mediated transient expression system for functional analysis of RS in planta.
- To confirm the production of resveratrol glucoside (trans-piceid) as evidence of RS activity.
Main Methods:
- Agrobacterium tumefaciens-mediated transient expression in Nicotiana benthamiana leaves.
- Real-time quantitative reverse transcription PCR (qRT-PCR) for transcript level analysis.
- Western blot for protein accumulation analysis.
- High-Performance Liquid Chromatography (HPLC) and mass spectrometry for metabolite profiling.
Main Results:
- RS gene transcripts peaked at 48 hours post-transfection.
- RS protein accumulation was highest at 72 hours post-transfection.
- Trans-piceid (resveratrol glucoside) production was confirmed, validating RS enzyme activity.
- No RS activity was detected in control experiments.
Conclusions:
- The Agrobacterium-mediated transient expression system provides a rapid and direct method for functional analysis of resveratrol synthase.
- This transient system bypasses the need for cell cultures or stable transgenic plants, offering advantages in speed and simplicity.
- The approach is valuable for studying gene function and metabolic effects of gene manipulation in plants within a short timeframe.
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