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| Content Provider | Springer Nature Link |
|---|---|
| Author | Manikandan, R. Balakrishnan, N. Sudhakar, D. Udayasuriyan, V. |
| Copyright Year | 2016 |
| Abstract | The insecticidal cry genes of Bacillus thuringiensis (Bt) have been successfully used for development of insect resistant transgenic rice plants. In this study, a novel cry2AX1 gene consisting a sequence of cry2Aa and cry2Ac gene driven by rice rbcS promoter was introduced into a rice cultivar, ASD16. Among 27 putative rice transformants, 20 plants were found to be positive for cry2AX1 gene. The expression of Cry2AX1 protein in transgenic rice plants ranged from 5.95 to 122.40 ng/g of fresh leaf tissue. Stable integration of the transgene was confirmed in putative transformants of rice by Southern blot hybridization analysis. Insect bioassay on T$_{0}$ transgenic rice plants against rice leaffolder (Cnaphalocrosis medinalis) recorded larval mortality up to 83.33 %. Stable inheritance and expression of cry2AX1 gene in T$_{1}$ progenies was demonstrated using Southern and ELISA. The detached leaf bit bioassay with selected T$_{1}$ plants showed 83.33–90.00 % mortality against C. medinalis. The whole plant bioassay for T$_{1}$ plants with rice leaffolder showed significant level of resistance even at a lower level of Cry2AX1 expression varying from 131 to 158 ng/g fresh leaf tissue during tillering stage. |
| Starting Page | 1 |
| Ending Page | 13 |
| Page Count | 13 |
| File Format | |
| ISSN | 09593993 |
| Journal | World Journal of Microbiology and Biotechnology |
| Volume Number | 32 |
| Issue Number | 3 |
| e-ISSN | 15730972 |
| Language | English |
| Publisher | Springer Netherlands |
| Publisher Date | 2016-02-11 |
| Publisher Place | Dordrecht |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Cry2AX1 Transgenic rice C. medinalis rbcS promoter Applied Microbiology Biotechnology Biochemistry Environmental Engineering/Biotechnology Microbiology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Physiology Medicine Applied Microbiology and Biotechnology Biotechnology |
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