Green fluorescent protein as a visual marker for wheat transformation

Area of Science:

• Plant Biotechnology
• Molecular Biology
• Genetics

Background:

• Wheat transformation via particle bombardment is a key technique, but currently suffers from low efficiencies.
• Optimizing wheat transformation protocols requires efficient methods for early detection of transformed cells.

Purpose of the Study:

• To evaluate the green fluorescent protein (GFP) as a non-destructive marker for detecting transformed wheat cells and tissues.
• To assess the utility of GFP in accelerating the optimization of wheat transformation protocols.

Main Methods:

• Particle bombardment of wheat with a modified Aequorea victoria green fluorescent protein (GFP) gene construct (sGFPS65T).
• Observation and selection of transformed cells and tissues based on green fluorescence.
• Comparison of GFP as a sole marker versus combined with antibiotic resistance.

Main Results:

• Multicellular clusters expressing GFP were observed 14 days post-bombardment.
• GFP-expressing shoots and roots were detected as early as 21 days post-bombardment.
• GFP facilitated rapid identification of optimal bombardment parameters and allowed selection of transgenic plants.

Conclusions:

• Modified GFP is an effective non-destructive marker for early detection of transformed wheat cells and tissues.
• Utilizing GFP significantly accelerates the optimization of wheat transformation protocols.
• GFP expression alone can be used for selection, though combining it with antibiotic resistance may enhance efficiency.