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Transgenic Plants02:50

Transgenic Plants

Recombinant DNA technology called transgenesis is often used to add a foreign gene or remove a detrimental gene from an organism. Such genetically modified organisms are called transgenic organisms.
The first-ever transgenic plant was a tobacco plant developed in 1983 that showed resistance against the tobacco mosaic virus. Since then, many transgenic plants have been developed and commercialized for improving the agricultural, ornamental, and horticultural value of a crop plant. Transgenic...

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Screening promoters for Anthurium transformation using transient expression.

Tracie K Matsumoto1, Lisa M Keith, Roxana Y M Cabos

  • 1USDA, ARS, Pacific Basin Agricultural Research Center, 64 Nowelo Street, Hilo, HI 96720, USA. tracie.matsumoto@ars.usda.gov

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Summary

Anthurium transformation research identified optimal promoters for gene expression. This accelerates the development of genetically modified anthurium plants with desirable traits.

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Area of Science:

  • Plant Biotechnology
  • Molecular Biology
  • Genetics

Background:

  • Anthurium transformation research has numerous publications but lacks commercial products, potentially due to suboptimal promoters.
  • Identifying effective promoters is crucial for advancing Anthurium genetic modification.

Purpose of the Study:

  • To evaluate different promoters and tissue types for transient gene expression in Anthurium andraeanum Hort. 'Marian Seefurth'.
  • To identify optimal promoters for enhancing Anthurium transformation efficiency.

Main Methods:

  • Microprojectile bombardment was used to deliver plasmids with various promoters (Ubiquitin 2, Actin 1, Cytochrome C1, Ubiquitin 1, 35S) fused to a GUS reporter gene.
  • Promoter-GUS constructs were introduced into Anthurium lamina, somatic embryos, and roots.
  • GUS expression foci number and intensity were quantified to assess promoter activity.

Main Results:

  • Ubiquitin promoters from rice and maize demonstrated the highest number of expressing cells across all tested Anthurium tissues.
  • Significant variation in GUS expression was observed among different promoters and tissues.
  • The study rapidly identified effective promoters for Anthurium transformation.

Conclusions:

  • Maize and rice Ubiquitin promoters are highly effective for driving gene expression in Anthurium tissues.
  • This research provides essential tools for developing transformation vectors to introduce desirable traits into Anthurium.
  • Accelerated identification of promoters will expedite the development of transgenic Anthurium plants.