Animal cells and systems

The Korean Society for Integrative Biology (한국통합생물학회)
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Protoplast Isolation and Regeneration of Fertile Plants from Arabidopsis Trp Mutant, trp1-100

  • Lim, Seon-hee (Department of Genetic Engineering, Chosun University) ;
  • Kim, Young-soon (Department of Genetic Engineering, Chosun University) ;
  • Lee, Eui-seung (Department of Genetic Engineering, Chosun University) ;
  • Rose, Alan (Deparmtent of Molecular and Cellular Biology, University of Califormja) ;
  • Last, Robert (Boyce Thomson Institute for Plant Research, Cornell University) ;
  • Cheong, Hyeon-sook (Department of Genetic Engineering, Chosun University)
  • Published : 1998.06.01
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Abstract

Arabidopsis trp1 mutant plants, deficient in phosphoribosyI anthranilate transferase (PAT) activity, accumulate anthranilate compounds, which render them blue fluorescence. The visible phenotype of trp1 makes the PAT gene an excellent reporter gene in the mutant. In order to develop a system for the homologous recombination using the phenotypic characteristic of trp1-100, we established optimum conditions for the isolation and regenera tion of protoplast from auxin-conditioned, trp1-100 root cultures. Trvptophan had to be supplemented in the germination medium for the efficient cell division and subsequent plant regeneration. When 10 uM tryptophan was added to the germination medium, we obtained the highest yield of protoplasts ($3{\times}10^6 cells/g$) and the best viability (92%). Thirty percent of root protoplast derived from meristematic cells underwent cell division within 5 days in callus-induction medium. Regenerated rosette leaves (2-3 mm) were transferred to rooting medium and finally acclimated to the soil for flowering.

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References

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