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Related Experiment Videos

A self-stabilizing Ac derivative and its potential for transposon tagging

G Schmitz1, K Theres

  • 1Institut für Genetik, Universität zu Köln, Germany.

The Plant Journal : for Cell and Molecular Biology
|November 1, 1994
PubMed
Summary

Researchers developed a novel transposon tagging system in tomato plants using a modified maize Ac element (Ds303). This system enables stable integration and transposition of genetic elements, crucial for plant genetic research.

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Area of Science:

  • Plant Molecular Biology
  • Genetics and Genomics
  • Transposable Elements

Background:

  • Development of self-stabilizing transposon tagging systems is crucial for advancing plant genetic research.
  • The maize Activator (Ac) element is a well-characterized transposon with potential for genetic manipulation in other species.
  • Previous studies highlight the need for robust and controllable transposon systems in crop improvement.

Purpose of the Study:

  • To engineer a self-stabilizing transposon tagging system in tomato (Lycopersicon esculentum).
  • To investigate the transposition behavior of a modified Ac element (Ds303) with a specific deletion.
  • To assess the stability and transactivation potential of transposed Ds303 elements.

Main Methods:

  • Introduction of a deleted Ac derivative (Ds303) into tomato via Agrobacterium tumefaciens-mediated transformation.

Related Experiment Videos

  • Ds303 was integrated into the T-DNA between the mannopine synthase 1' promoter and the GUS reporter gene.
  • Analysis of transposition events and stability of integrated Ds303 elements in independent transgenic lines.

    • Main Results:

    • Somatic and germinal transpositions of Ds303 were observed in four independent transgenic tomato lines.
    • Transposed Ds303 elements integrated stably into the plant genome.
    • The transposed Ds303 elements did not transactivate a tester Ds element but underwent further transposition in the presence of a transposase source.

    Conclusions:

    • The modified Ac element (Ds303) functions as a self-stabilizing transposon system in tomato.
    • Stable integration and subsequent transposition of Ds303 elements offer a valuable tool for insertional mutagenesis.
    • This system provides a controllable method for genetic tagging and modification in tomato, advancing crop genetics.