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Related Experiment Videos

Molecular genetics using T-DNA in rice.

Gynheung An1, Shinyoung Lee, Sung-Hyun Kim

  • 1National Research Laboratory of Plant Functional Genomics, Division of Molecular and Life Sciences, Pohang University of Science and Technology (POSTECH), Pohang 790-784, Korea. genean@postech.ac.kr

Plant & Cell Physiology
|January 22, 2005
PubMed
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Rice genome sequencing is nearing completion, shifting focus to gene function analysis. T-DNA insertional mutant lines are crucial resources for reverse genetics, enabling efficient gene function discovery in rice.

Area of Science:

  • Plant genetics
  • Molecular biology
  • Genomics

Background:

  • Rice genome sequencing is nearing completion, presenting a new challenge in functional gene analysis.
  • Transgenic rice, facilitated by T-DNA technology, has yielded over 200,000 insertional mutant lines globally.
  • These lines include reporter gene/enhancer traps and activation tagging lines for gain-of-function studies.

Purpose of the Study:

  • To outline the significance of T-DNA insertional mutant lines for rice functional genomics.
  • To highlight the shift from forward to reverse genetics approaches for gene function discovery.
  • To emphasize the need for efficient utilization and sharing of these valuable genetic resources.

Main Methods:

  • Generation of extensive T-DNA insertional mutant collections in rice.

Related Experiment Videos

  • Utilizing reporter genes (GUS, GFP) for gene or enhancer trapping.
  • Employing activation tagging for gain-of-function mutagenesis.
  • Developing pooled DNA screening via polymerase chain reaction (PCR) for reverse genetics.
  • Sequencing flanking regions to identify T-DNA insertion sites.

    • Main Results:

    • Establishment of over 200,000 T-DNA insertional lines worldwide.
    • Development of diverse mutant lines, including reporter and activation tagging types.
    • Successful application of pooled DNA and PCR for efficient mutant screening.
    • Creation of databases for sharing insertion site information with the scientific community.

    Conclusions:

    • T-DNA insertional mutant lines are indispensable for rice functional genomics research.
    • Reverse genetics approaches using these lines offer a powerful alternative to forward genetics.
    • International collaboration for seed amplification and maintenance is vital for maximizing the utility of these resources.