Abstract
DNA methylation is known to play an important role in the regulation of gene expression in eukaryotes. In this study, we isolated NtMET1 from Nicotiana tabacum cv. Havana (SR1) and obtain transgenic plants that reduced MET1 expression level with the double-strand RNA (dsRNA) MET1 gene. Transgenic tobacco plants showed dwarf and abnormal flower development when compared with the wild type. Using methylation-sensitive amplified polymorphism (MSAP) analysis, the patterns of cytosine methylation in transformed plants and the wild type were compared. MseI/HpaII selection primers showed an interesting polymorphism, and 153 DNA bands of interest were detected. Among these, 30 selective fragments were sequenced and analyzed with a BLAST search by successful MSAP modifications. The homology search showed that the transposons and tandem repeated sequences were related to the phenotypes. These results suggested that the decreased degree of methylation by dsRNA strategy caused abnormal growth and development in N. tabacum.
| Original language | English |
|---|---|
| Pages (from-to) | 139-145 |
| Number of pages | 7 |
| Journal | Plant Biotechnology Reports |
| Volume | 3 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - Apr 2009 |
Bibliographical note
Funding Information:Acknowledgment This work was supported by a grant (20070301034037) from the BioGreen 21 Program, Rural Development Administration, Republic of Korea.
Keywords
- MSAP
- Methylation
- Tobacco
- Transposon
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