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Transposon tagging in rice

T Izawa1, T Ohnishi, T Nakano

  • 1Laboratory of Plant Molecular Genetics, Nara Institute of Science and Technology, Ikoma, Japan.

Plant Molecular Biology
|September 18, 1997
PubMed
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Researchers developed an efficient gene isolation method for rice using the maize Activator/Dissociation (Ac/Ds) transposon system. This system actively transposes in rice, enabling the generation and analysis of mutations for gene discovery.

Area of Science:

  • Plant genetics
  • Molecular biology
  • Agricultural science

Background:

  • Developing efficient gene isolation techniques is crucial for understanding plant biology and improving crop traits.
  • The maize Activator/Ds (Ac/Ds) transposon system is a well-established tool for genetic manipulation in plants.
  • Previous studies have explored transposon activity in various plant species, but its efficiency in rice requires further investigation.

Purpose of the Study:

  • To establish an efficient gene isolation method for rice.
  • To investigate the transposition activity and behavior of the maize Ac/Ds system in rice over multiple generations.
  • To generate and characterize mutations in rice using the Ac/Ds system for gene discovery.

Main Methods:

  • Introduction of the maize Ac/Ds transposon system into rice.

Related Experiment Videos

  • Monitoring and analysis of Ac/Ds transposition activity across several generations.
  • Induction and screening of mutations affecting plant growth, development, and disease resistance.
  • Genetic analysis of induced mutations.
  • Chromosomal mapping of Ac/Ds elements.

    • Main Results:

    • The maize Ac/Ds system, in the presence of Ac transposase, demonstrated active transposition in rice.
    • A diverse range of mutations were generated, impacting rice growth, morphogenesis, flowering time, and disease resistance.
    • Some of these mutations have undergone genetic analysis, indicating their potential for gene isolation.
    • Several Ac/Ds elements have been successfully mapped onto rice chromosomes.

    Conclusions:

    • The maize Ac/Ds system is an effective tool for generating mutations and facilitating gene isolation in rice.
    • The active transposition of Ac/Ds in rice provides a valuable resource for functional genomics and crop improvement.
    • Chromosomal mapping of Ac/Ds elements will enable targeted gene tagging for genes with known locations.