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| Content Provider | Springer Nature Link |
|---|---|
| Author | Chen, Zhihui Gao, Xinqiang Zhang, Jian |
| Copyright Year | 2015 |
| Abstract | Overexpressing osa - miR156e in rice produced a bushy mutant and osa - miR156e regulation of tillering may do this through the strigolactones (SLs) pathway. Appropriate downregulation of osa - miR156 expression contributed to the improvement of plant architecture. Tillering is one of the main determinants for rice architecture and yield. In this study, a bushy mutant of rice was identified with increased tiller number, reduced plant height, prolonged heading date, low seed setting, and small panicle size due to a T-DNA insertion which essentially elevated the expression of osa-miR156e. Transgenic plants with constitutive expression of osa-miR156e also had the bushy phenotype, which showed osa-miR156 may control apical dominance and tiller outgrowth via regulating the strigolactones signaling pathway. Furthermore, the extent of impaired morphology was correlated with the expression level of osa-miR156e. In an attempt to genetically improve rice architecture, ectopic expression of osa-miR156e under the GAL4-UAS system or OsTB1 promoter was conducted. According to agronomic trait analysis, pTB1:osa-miR156e transgenic plants significantly improved the grain yield per plant compared to plants overexpressing osa-miR156e, even though the yield was still inferior to the wild type, making it a very interesting albeit negative result. Our results suggested that osa-miR156 could serve as a potential tool for modifying rice plant architecture through genetic manipulation of the osa-miR156 expression level. |
| Starting Page | 767 |
| Ending Page | 781 |
| Page Count | 15 |
| File Format | |
| ISSN | 07217714 |
| Journal | Plant Cell Reports |
| Volume Number | 34 |
| Issue Number | 5 |
| e-ISSN | 1432203X |
| Language | English |
| Publisher | Springer Berlin Heidelberg |
| Publisher Date | 2015-01-21 |
| Publisher Place | Berlin, Heidelberg |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Osa-miR156 Tillering Ectopic expression MAX/RMS/D Apical dominance Cell Biology Plant Sciences Biotechnology Plant Biochemistry |
| Content Type | Text |
| Resource Type | Article |
| Subject | Plant Science Medicine Agronomy and Crop Science |
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