Russian Journal of Genetics

, Volume 42, Issue 5, pp 526–531 | Cite as

The effect of duplications in the T-DNA on the stability of manifestation of heterologous genes in transgenic tobacco plants

  • T. V. Marenkova
  • E. V. Deineko
Plant Genetics


The duplication of uidA gene within T-DNA was shown to disturb stability of expression of another marker gene, nptII, in the second generation (T2) of selfed initial transformants and in F1 hybrids of the crosses with nontransgenic tobacco. Hybridological analysis of the progeny resulting from various crosses involving T1 plants demonstrated that the expression of nptII gene was impaired in the hybrids that were hemizygous for the inactivated copy of uidA gene.


Marker Gene Tobacco Plant Transgenic Tobacco Transgenic Tobacco Plant Heterologous Gene 
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Copyright information

© Pleiades Publishing, Inc. 2006

Authors and Affiliations

  • T. V. Marenkova
    • 1
  • E. V. Deineko
    • 1
  1. 1.Institute of Cytology and GeneticsRussian Academy of SciencesNovosibirskRussia

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