Mosaic expression pattern of the nptII gene in transgenic tobacco plants Nu 21

Mosaic expression pattern of the nptII gene in transgenic tobacco plants Nu 21 Mosaic expression pattern of the nptII gene in transgenic tobacco Nu 21 leaf somatic cells was demonstrated. Inheritance of this phenotype (in T1–T4 and F1 backcrosses) was revealed. Three plant groups were distinguished, with low frequency of variegation manifestation (0–21.8%), with the high frequency of mosaic progeny (63.1 to 100%), and the intermediate type, where the frequency of the appearance of mosaic plants varied in a wide range, from 0 to 100%. The data obtained suggested the existence of two metastable states of a transgene in the leaf disk somatic cells (active and silenced), which could be associated with DNA modification, i.e., methylation of cytosine within the nptII gene sequence. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Genetics Springer Journals

Mosaic expression pattern of the nptII gene in transgenic tobacco plants Nu 21

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Publisher
Nauka/Interperiodica
Copyright
Copyright © 2007 by Pleiades Publishing, Inc.
Subject
Biomedicine; Human Genetics; Animal Genetics and Genomics; Microbial Genetics and Genomics
ISSN
1022-7954
eISSN
1608-3369
D.O.I.
10.1134/S1022795407070101
Publisher site
See Article on Publisher Site

Abstract

Mosaic expression pattern of the nptII gene in transgenic tobacco Nu 21 leaf somatic cells was demonstrated. Inheritance of this phenotype (in T1–T4 and F1 backcrosses) was revealed. Three plant groups were distinguished, with low frequency of variegation manifestation (0–21.8%), with the high frequency of mosaic progeny (63.1 to 100%), and the intermediate type, where the frequency of the appearance of mosaic plants varied in a wide range, from 0 to 100%. The data obtained suggested the existence of two metastable states of a transgene in the leaf disk somatic cells (active and silenced), which could be associated with DNA modification, i.e., methylation of cytosine within the nptII gene sequence.

Journal

Russian Journal of GeneticsSpringer Journals

Published: Jul 23, 2007

References

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