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| Content Provider | Springer Nature Link |
|---|---|
| Author | Wada, Y. Miyamoto, K. Kusa, T. Sa, H. |
| Copyright Year | 2004 |
| Abstract | Transcripts that specifically accumulate in transgenic tobacco plants expressing an anti-sense construct for a tobacco type I DNA methyltransferase, NtMET1, were screened by the differential display method. Of the 31 genes identified, 16 encoded proteins with known functions; ten of these were related to biotic and abiotic stress responses, and the other six to cellular functions. In order to examine whether expression of these genes is correlated with DNA methylation status under natural stress conditions, a pathogen-responsive gene ( NtAlix1) was selected as representative, and assayed for transcript induction and genomic methylation in tobacco plants infected with tobacco mosaic virus (TMV). In inoculated leaves of wild-type plants, NtAlix1 transcripts began to accumulate 12 h after the onset of the hypersensitive response (HR), and levels remained high for up to 24 h. Changes in the methylation status at the locus became obvious 24 h later, as detected by digestion of genomic DNA with a methylation-sensitive restriction enzyme. The results suggest that the level of DNA methylation may change in response to external stresses, and that this is closely related to the activation of stress-responsive genes. |
| Starting Page | 658 |
| Ending Page | 666 |
| Page Count | 9 |
| File Format | |
| ISSN | 16174615 |
| Journal | Molecular and General Genetics MGG |
| Volume Number | 271 |
| Issue Number | 6 |
| e-ISSN | 16174623 |
| Language | English |
| Publisher | Springer-Verlag |
| Publisher Date | 2004-05-18 |
| Publisher Place | Berlin/Heidelberg |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | 5-Methylcytosine DNA methyltransferase Tobacco mosaic virus Hypersensitive response Nicotiana tabacum. |
| Content Type | Text |
| Resource Type | Article |
| Subject | Genetics Medicine Molecular Biology |
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