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| Content Provider | Springer Nature Link |
|---|---|
| Author | Zhang, Yi Yin, Hui Li, Dan Zhu, Weiwei Li, Qiuli |
| Copyright Year | 2007 |
| Abstract | A 1,993 bp region upstream of the gene encoding the betaine aldehyde dehydrogenase (BADH) was isolated from Suaeda liaotungensis K., and the analysis of the promoter sequence has revealed the existence of several putative cis-elements by the PLACE database. In this study, according to the characteristic of the BADH promoter, five chimeric constructs varied in the length of promoter fragments from −1,993, −1,466, −1,084, −573 and −300 to +62 bp relative to the transcriptional start site were placed to the upstream of the β-glucuronidase (GUS) coding region and transferred to Nicotiana tabacum L.cv.89 by Agrobacterium tumefaciens-mediated leaf-disc transformation. The functional properties of each promoter fragment were examined by GUS histochemical staining and fluorescence quantitative analyses in the transgenic tobacco leaves treated with different NaCl concentrations for 48 h. The results show that healthy transgenic plants had decreased GUS activity in leaves, whereas a higher GUS activity was observed when the transgenic plants were challenged with sodium chloride (NaCl). Induction levels were proportional to the concentration of NaCl treatment, allowing fine-tuning of protein expression. GUS enzyme activity was enhanced 6.3-fold in transgenic tobacco leaves containing −300 bp promoter fragment in the presence of 400 mmol/l NaCl compared to the noninductive leaves. This suggests that the smallest promoter fragment (−300 to +62 bp) possesses all the essential cis-acting elements and is sufficient for NaCl induction. |
| Starting Page | 585 |
| Ending Page | 592 |
| Page Count | 8 |
| File Format | |
| ISSN | 07217714 |
| Journal | Plant Cell Reports |
| Volume Number | 27 |
| Issue Number | 3 |
| e-ISSN | 1432203X |
| Language | English |
| Publisher | Springer-Verlag |
| Publisher Date | 2007-10-09 |
| Publisher Place | Berlin, Heidelberg |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Suaeda liaotungensis K. Betaine aldehyde dehydrogenase BADH promoter deletion analysis GUS activity NaCl induction Plant Biochemistry Biotechnology Plant Sciences Cell Biology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Plant Science Medicine Agronomy and Crop Science |
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