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Selectable markers: antibiotic and herbicide resistance
Julia L Goodwin1, Gabriela M Pastori, Michael R Davey
1Crop Performance and Improvement Department, Rothamsted Research, Hertfordshire, UK.
Methods in Molecular Biology (Clifton, N.J.)
|August 18, 2004
Summary
Plant transformation relies on selectable marker genes for successful DNA integration. This study details two wheat transformation systems using antibiotic resistance (nptII gene) and herbicide resistance (bar gene) for efficient cell selection.
Area of Science:
- Plant biotechnology
- Molecular biology
- Genetics
Background:
- Plant transformation requires methods to identify successfully modified cells.
- Selectable marker genes are crucial for distinguishing transformed plant cells.
- Commonly used markers include genes conferring resistance to antibiotics or herbicides.
Purpose of the Study:
- To describe the application of two distinct selection systems in wheat transformation.
- To evaluate the efficacy of antibiotic and herbicide resistance markers in plant genetic engineering.
Main Methods:
- Utilized the nptII gene system with aminoglycoside antibiotics for selection.
- Employed the bar gene system with glufosinate ammonium herbicides for selection.
- Applied these systems to the transformation of wheat.
Main Results:
- Demonstrated the practical application of two selectable marker systems in wheat transformation.
- Highlighted the role of specific genes (nptII, bar) in conferring resistance.
- Showcased the preferential growth of transformed cells under selection pressure.
Conclusions:
- The nptII and bar gene systems are effective for selecting transformed wheat cells.
- These marker systems facilitate the identification of cells with successful DNA integration and expression.
- The described methods are valuable for advancing plant transformation research.