Analysis of mosaic expression of the nptII gene in transgenic tobacco plant lines contrasting in mosaicism

Analysis of mosaic expression of the nptII gene in transgenic tobacco plant lines contrasting in... Differences in the mosaic plants occurence frequency between the Nu5 and Nu6 lines of transgenic tobacco (Nicotiana tabacum) plants remained irrespective of the nptII marker gene allelic state. nptII gene transition from the hemizygous state (T3) to the homozygous one (T4) was accompanied by an increase in the frequency of mosaics in both lines. Transition from the homozygous state (T4) into the hemizygous one (F1) resulted in a further increase in the frequency of mosaic plants in the Nu5 line, whereas this parameter remained at a high level in the Nu6 line. pMAS promoter hypermethylation in plants of both lines, as well as differences in the 5′-part truncated nptII gene copy cytosin methylation level between the Nu5 and Nu6 lines, pointed to nptII gene mosaic expression epigenetic regulation. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Genetics Springer Journals

Analysis of mosaic expression of the nptII gene in transgenic tobacco plant lines contrasting in mosaicism

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Publisher
SP MAIK Nauka/Interperiodica
Copyright
Copyright © 2012 by Pleiades Publishing, Ltd.
Subject
Biomedicine; Microbial Genetics and Genomics; Human Genetics; Animal Genetics and Genomics
ISSN
1022-7954
eISSN
1608-3369
D.O.I.
10.1134/S1022795412110051
Publisher site
See Article on Publisher Site

Abstract

Differences in the mosaic plants occurence frequency between the Nu5 and Nu6 lines of transgenic tobacco (Nicotiana tabacum) plants remained irrespective of the nptII marker gene allelic state. nptII gene transition from the hemizygous state (T3) to the homozygous one (T4) was accompanied by an increase in the frequency of mosaics in both lines. Transition from the homozygous state (T4) into the hemizygous one (F1) resulted in a further increase in the frequency of mosaic plants in the Nu5 line, whereas this parameter remained at a high level in the Nu6 line. pMAS promoter hypermethylation in plants of both lines, as well as differences in the 5′-part truncated nptII gene copy cytosin methylation level between the Nu5 and Nu6 lines, pointed to nptII gene mosaic expression epigenetic regulation.

Journal

Russian Journal of GeneticsSpringer Journals

Published: Nov 17, 2012

References

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